San Francisco, CA

6:46 PM PDT on May 21, 2013 (GMT -0700)
Elev: 154 ft
Lon: 122.4° W
Lat: 37.8° N
Source
Rapid Fire Updates™
 Updated 5:56 PM PDT Get Free Weather Stickers® Share:
Your Custom Weather Sticker®

Copy the following lines of HTML:
Get more styles and options for your Weather Sticker® here.
Oklahoma Tornado: More coverage on Catastrophic EF-5 Tornado in Oklahoma
News
Miles and Minutes: Okla. Tornado By the Numbers
May 21, 2013
See the facts and figures that defined the Moore, Okla. tornado.
Moore Tornado a Rare EF5
May 21, 2013
EF5/F5 tornadoes are rare, but Moore has seen two of them in the past 15 years.
Power of Moore Tornado Dwarfs Hiroshima Atomic Bomb
May 21, 2013
Wind, humidity and rainfall combined precisely to create the massive killer tornado in Moore, Okla. And when they did, the awesome amount of energy released over that city dwarfed the power of the atomic bomb that leveled Hiroshima.
Okla Governor: We Will Rebuild After Tornado
May 21, 2013
The search and rescue efforts are ongoing in Moore, Okla. after a massive tornado levelled the town and local schools.
Weather Imagery Reveals Oklahoma Tornado
May 21, 2013
The Moore, Oklahoma tornado showed up vividly on satellite and radar.
PTSD Risk after the Oklahoma Tornado
May 21, 2013
In the wake of Mondays devastating tornado that ravaged the town of Moore, Okla., survivors are likely to feel incredible shock and numbness.
Tornado Leaves Small Hospital 'Pretty Much Destroyed'
May 21, 2013
Officials say a tornado hit a small hospital in suburban Oklahoma City, but all the 30 patients inside survived.
Obama: 'Americans From Every Corner of This Country Will Be With Them'
May 21, 2013
Obama has declared a major disaster in Oklahoma, ordering federal aid to supplement state and local recovery efforts. The president also spoke Monday with Oklahoma Gov. Mary Fallin and Rep. Tom Cole, whose home is in the heavily damaged town of Moore.
Why Don't More Homes in Oklahoma Have Basements?
May 21, 2013
The answer lies in the level of the water table and the soil texture in Oklahoma and in states across the Plains.
Photos: Deadly Tornado Outbreak Strikes Plains
May 21, 2013
A tornado outbreak struck the Plains states on May 19, 2013, leaving widespread damage in its wake.
Children and the Tornado: Helping Kids Cope
May 21, 2013
Any time children are involved in a catastrophe, emotional reactions among survivors and across the nation are particularly strong.
Recap: Tornadoes Rake Oklahoma, Kansas, Iowa
May 21, 2013
The weather imagery, video and recap from tornadoes in the Plains on May 19, 2013.
Tornado Took Similar Path to 1999 F5
May 21, 2013
Moore, Oklahoma is no stranger to devastating tornadoes.
'I Expected Chaos:' Scenes from Okla. School
May 21, 2013
A photographer who was among the first to arrive at an Oklahoma Elementary School after a tornado destroyed it, describes the heart-wrenching scene.
A Timeline of Deadly Events in Moore, Okla.
May 21, 2013
Check out this comprehensive timeline of the events that transpired in Moore, Okla.
In Tornado's Wake, Worried Parents Seek Out Kids
May 21, 2013
A desperate search was underway by parents looking to find children after the massive tornado.
Moore Already at Work on Recovery, Says Mayor
May 21, 2013
Glenn Lewis was the mayor of Moore, Okla., when the strongest tornado on record whipped the city in 1999, and he says the most recent storm won't deter the community from rebuilding.
Moore Survivor Finds Dog Buried Alive
May 21, 2013
Watch as a tornado survivor is interrupted in the middle of interview by a little dog digging out of rubble.
Oklahoma Tornado: How to Help
May 21, 2013
There are several agencies asking for donations to help those hit hard by the Oklahoma tornadoes.
Multiple Children Dead at Okla. School
May 21, 2013
More than a dozen children are dead in the devastating Moore, Okla. tornado.
More News Articles
Weather Summary
Kari Kiefer
Weather Underground midday recap for Tuesday, May 21, 2013.

After a devastating severe weather day in the Plains on Monday, severe weather began to fire up again across the nation's mid-section on Tuesday.

The nearly stationary low over the Northern Plains showed signs of gradual weakening as it shifted eastward toward the Mississippi River Valley on Tuesday, while the system's associated cold front trailed southwestward from the low across the Mid-Mississippi Valley through the Southern Plains. Favorable energy and conditions ahead of the cold front combined with the moisture laden conditions of the nation's mid-section set the stage for multiple clusters of thunderstorms to develop from the Midwest into the Ozarks and the Southern Plains. Portions of north-central/northeastern Texas, southern Arkansas, northwestern Louisiana and far southeastern Oklahoma remained at moderate risk of severe thunderstorm activity as environmental conditions remained favorable for tornadoes, damaging wind gusts, and very large hail. In particular, substantial severe weather was expected across north-central Texas to the

ArkLaTex region this afternoon and evening. Areas surrounding this moderate risk region from the Southern Plains to the Tennessee/Ohio valleys and the Lower Great Lakes/Northeast remained at slight risk of severe thunderstorm development with hail, damaging wind gusts, and isolated tornadoes. In addition to severe storms, heavy rains created chances of flood and possible isolated areas of flash flooding from parts eastern Oklahoma through northern Arkansas.

Meanwhile, areas of heavy rain and widely scattered showers continued near the low in the Northern Plains and Upper Mississippi Valley and near and to the north of a nearly stationary frontal boundary extending out ahead of the system from the Great Lakes into the inland areas of the Northeast. Continued precipitation in already saturated areas of the Northern Plains and Upper Midwest maintain flood concerns from parts of North Dakota into northern Wisconsin.

Elsewhere, scattered showers and thunderstorms picked up across the Mid-Atlantic and southeastern corner of the nation through the afternoon.
Weather Underground midday recap for Tuesday, May 21, 2013.

After a devastating severe weather day in the Plains on Monday, severe weather began to fire up again across the nation's mid-section on Tuesday.

The nearly stationary low over the Northern Plains showed signs of gradual weakening as it shifted eastward toward the Mississippi River Valley on Tuesday, while the system's associated cold front trailed southwestward from the low across the Mid-Mississippi Valley through the Southern Plains. Favorable energy and conditions ahead of the cold front combined with the moisture laden conditions of the nation's mid-section set the stage for multiple clusters of thunderstorms to develop from the Midwest into the Ozarks and the Southern Plains. Portions of north-central/northeastern Texas, southern Arkansas, northwestern Louisiana and far southeastern Oklahoma remained at moderate risk of severe thunderstorm activity as environmental conditions remained favorable for tornadoes, damaging wind gusts, and very large hail. In particular, substantial severe weather was expected across north-central Texas to the

ArkLaTex region this afternoon and evening. Areas surrounding this moderate risk region from the Southern Plains to the Tennessee/Ohio valleys and the Lower Great Lakes/Northeast remained at slight risk of severe thunderstorm development with hail, damaging wind gusts, and isolated tornadoes. In addition to severe storms, heavy rains created chances of flood and possible isolated areas of flash flooding from parts eastern Oklahoma through northern Arkansas.

Meanwhile, areas of heavy rain and widely scattered showers continued near the low in the Northern Plains and Upper Mississippi Valley and near and to the north of a nearly stationary frontal boundary extending out ahead of the system from the Great Lakes into the inland areas of the Northeast. Continued precipitation in already saturated areas of the Northern Plains and Upper Midwest maintain flood concerns from parts of North Dakota into northern Wisconsin.

Elsewhere, scattered showers and thunderstorms picked up across the Mid-Atlantic and southeastern corner of the nation through the afternoon.
More News Articles

San Francisco Weather at a Glance

Updated 5:56 PM PDT
Weather Station
San Francisco (KSFO)
Elevation
10 ft
Report Station
You are about to report this weather station for bad data.

Please select the information which is incorrect and click 'Submit' otherwise click 'Cancel'.

— Cancel

Now
Partly Cloudy
Partly Cloudy
Temperature
57 °F
Feels Like 57 °F
Wind(mph)
34
Sunrise / Set
5:55 AM
8:18 PM
Moon
Waxing Gibbous
Tonight
Partly Cloudy 46 °F
Partly Cloudy
Tomorrow
Partly Cloudy 64 °F
Partly Cloudy
Tomorrow Night
Clear 50 °F
Clear
Thursday
Partly Cloudy 63 | 50 °F
Partly Cloudy
Friday
Partly Cloudy 63 | 50 °F
Partly Cloudy
Saturday
Partly Cloudy 68 | 52 °F
Partly Cloudy
Tomorrow is forecast to be nearly the same temperature as today.
Conditions
Pressure
29.96 in
Visibility
10.0 miles
Clouds
Few 2000 ft
Moisture
Humidity
59%
Rainfall
0.00 in
Snow Depth
Not available.
METAR
METAR KSFO 220056Z 28030G41KT 10SM FEW020 14/06 A2996 RMK AO2 PK WND 28044/0046 SLP144 T01390061
Don't speak METAR? Read our FAQ.
Weather Radio
Launch Weather Radio
Temperature
Temperature
57 °F
53,53,54,56,57,59,61,61,63,62,61,61,59
Dew Point
43 °F
Wind
Speed / Dir
34 mph from West
Wind Gust
47 mph
Health
UV
2 out of 16
Pollen
6.30 out of 12
Pollen Forecast
Ozone
Good
PM2.5
Good
Flu Activity
Sporadic
View Flu Map
Loading…
Source: BestForecast
Descriptive Forecast
Tuesday Night
nt_partlycloudy Partly cloudy in the evening, then clear. Low of 46F. Windy. Winds from the WNW at 10 to 30 mph with gusts to 35 mph.
Wednesday
partlycloudy Partly cloudy. High of 64F. Windy. Winds from the WNW at 15 to 30 mph with gusts to 40 mph.
Wednesday Night
nt_clear Clear. Low of 50F. Breezy. Winds from the WNW at 15 to 25 mph with gusts to 30 mph.
Thursday
partlycloudy Partly cloudy in the morning, then clear. High of 63F. Windy. Winds from the WNW at 20 to 25 mph with gusts to 35 mph.
Thursday Night
nt_partlycloudy Partly cloudy. Low of 50F. Windy. Winds from the WNW at 15 to 30 mph with gusts to 35 mph.
Friday
partlycloudy Partly cloudy. High of 63F. Windy. Winds from the West at 15 to 25 mph with gusts to 35 mph.
Friday Night
nt_partlycloudy Partly cloudy in the evening, then overcast. Low of 50F. Winds from the West at 5 to 15 mph.
Saturday
partlycloudy Overcast in the morning, then mostly cloudy. High of 68F. Winds from the West at 10 to 15 mph.
Saturday Night
nt_mostlycloudy Overcast. Low of 52F. Winds from the West at 5 to 15 mph.
Sunday
partlycloudy Overcast in the morning, then partly cloudy. High of 66F. Winds from the West at 5 to 15 mph.
Sunday Night
nt_mostlycloudy Mostly cloudy. Low of 52F. Winds from the WNW at 5 to 15 mph.
Monday
mostlycloudy Mostly cloudy. High of 66F. Winds from the West at 10 to 15 mph.
Monday Night
nt_mostlycloudy Mostly cloudy. Low of 54F. Winds from the WNW at 5 to 15 mph.
Tuesday
partlycloudy Partly cloudy. High of 64F. Breezy. Winds from the West at 10 to 20 mph.
Tuesday Night
nt_partlycloudy Partly cloudy. Low of 52F. Winds from the WNW at 5 to 15 mph.
Wednesday
partlycloudy Partly cloudy. High of 68F. Winds from the West at 5 to 15 mph.
Wednesday Night
nt_partlycloudy Partly cloudy. Low of 52F. Winds from the West at 5 to 15 mph.
Thursday
partlycloudy Partly cloudy. High of 64F. Winds from the WNW at 5 to 15 mph.
Thursday Night
nt_partlycloudy Clear. Low of 50F. Winds from the WNW at 10 to 15 mph.
Friday
clear Clear. High of 66F. Winds from the WNW at 5 to 20 mph.
Friday Night
nt_clear Clear. Low of 52F. Breezy. Winds from the NW at 10 to 20 mph.
Loading…
 
First Previous Last Next  
Updated:  
 
 

 

Weather Forecast for San Francisco CA

View Calendar 10-Day Forecast for station KSFO

Tuesday, 21
Partly Cloudy
66 | 46 °F
Partly Cloudy
Chance of
Precipitation
0%
Wednesday, 22
Partly Cloudy
64 | 50 °F
Partly Cloudy
Chance of
Precipitation
0%
Thursday, 23
Partly Cloudy
63 | 50 °F
Partly Cloudy
Chance of
Precipitation
0%
Friday, 24
Partly Cloudy
63 | 50 °F
Partly Cloudy
Chance of
Precipitation
0%
Saturday, 25
Partly Cloudy
68 | 52 °F
Partly Cloudy
Chance of
Precipitation
0%
Sunday, 26
Partly Cloudy
66 | 52 °F
Partly Cloudy
Chance of
Precipitation
0%
Monday, 27
Mostly Cloudy
66 | 54 °F
Mostly Cloudy
Chance of
Precipitation
0%
Tuesday, 28
Partly Cloudy
64 | 52 °F
Partly Cloudy
Chance of
Precipitation
0%
Wednesday, 29
Partly Cloudy
68 | 52 °F
Partly Cloudy
Chance of
Precipitation
0%
Thursday, 30
Partly Cloudy
64 | 50 °F
Partly Cloudy
Chance of
Precipitation
0%
Source: BestForecast at 6:45 PM PDT on May 21, 2013
Descriptive Forecast
Tuesday Night
nt_partlycloudy Partly cloudy in the evening, then clear. Low of 46F. Windy. Winds from the WNW at 10 to 30 mph with gusts to 35 mph.
Hourly Forecast 6AM 12 Noon 6PM 12 Midnight
Temp. | Dew Point 57 | 49 62 | 50 56 | 47 53 | 45
Wind 19 mph West 26 mph WNW 28 mph WNW 17 mph WNW
Humidity 73% 63% 71% 73%
Chance of Precip. 0% 0% 0% 0%
Cloud Cover 71% 56% 39% 37%
Conditions Mostly Cloudy Partly Cloudy Partly Cloudy Partly Cloudy
Sunrise & Sunset
5:55 AM
8:18 PM
The quality of the forecasted high temperature for this day is good. MaxT RMSE [2.42], Average RMSE [1.43]
The National Weather Service forecast quality is poor. MaxT RMSE [7.32], Average RMSE [1.93] : Use NWS
Source: BestForecast at 6:45 PM PDT on May 21, 2013
Descriptive Forecast
Wednesday
partlycloudy Partly cloudy. High of 64F. Windy. Winds from the WNW at 15 to 30 mph with gusts to 40 mph.
Wednesday Night
nt_clear Clear. Low of 50F. Breezy. Winds from the WNW at 15 to 25 mph with gusts to 30 mph.
Hourly Forecast 6AM 12 Noon 6PM 12 Midnight
Temp. | Dew Point 51 | 45 62 | 40 59 | 39 51 | 45
Wind 10 mph NW 20 mph WNW 26 mph WNW 16 mph WNW
Humidity 79% 46% 49% 78%
Chance of Precip. 0% 0% 0% 0%
Cloud Cover 6% 33% 31% 1%
Conditions Clear Partly Cloudy Partly Cloudy Clear
Sunrise & Sunset
5:54 AM
8:18 PM
The quality of the forecasted high temperature for this day is good. MaxT RMSE [2.42], Average RMSE [1.74]
The National Weather Service forecast quality is good. MaxT RMSE [1.91], Average RMSE [2.44] : Use NWS
Source: BestForecast at 6:45 PM PDT on May 21, 2013
Descriptive Forecast
Thursday
partlycloudy Partly cloudy in the morning, then clear. High of 63F. Windy. Winds from the WNW at 20 to 25 mph with gusts to 35 mph.
Thursday Night
nt_partlycloudy Partly cloudy. Low of 50F. Windy. Winds from the WNW at 15 to 30 mph with gusts to 35 mph.
Hourly Forecast 6AM 12 Noon 6PM 12 Midnight
Temp. | Dew Point 52 | 45 60 | 44 56 | 42 52 | 46
Wind 16 mph WNW 21 mph WNW 25 mph WNW 16 mph WNW
Humidity 79% 56% 59% 80%
Chance of Precip. 0% 0% 0% 0%
Cloud Cover 5% 45% 25% 33%
Conditions Clear Partly Cloudy Clear Partly Cloudy
Sunrise & Sunset
5:53 AM
8:19 PM
The quality of the forecasted high temperature for this day is fair. MaxT RMSE [2.53], Average RMSE [1.49]
The National Weather Service forecast quality is fair. MaxT RMSE [2.51], Average RMSE [2.14] : Use NWS
Source: BestForecast at 6:45 PM PDT on May 21, 2013
Descriptive Forecast
Friday
partlycloudy Partly cloudy. High of 63F. Windy. Winds from the West at 15 to 25 mph with gusts to 35 mph.
Friday Night
nt_partlycloudy Partly cloudy in the evening, then overcast. Low of 50F. Winds from the West at 5 to 15 mph.
Hourly Forecast 6AM 12 Noon 6PM 12 Midnight
Temp. | Dew Point 52 | 47 58 | 48 56 | 46 52 | 48
Wind 10 mph WNW 16 mph West 21 mph WNW 10 mph West
Humidity 81% 69% 70% 88%
Chance of Precip. 0% 0% 0% 0%
Cloud Cover 30% 51% 47% 60%
Conditions Partly Cloudy Partly Cloudy Partly Cloudy Partly Cloudy
Sunrise & Sunset
5:53 AM
8:20 PM
The quality of the forecasted high temperature for this day is fair. MaxT RMSE [2.70], Average RMSE [2.07]
The National Weather Service forecast quality is fair. MaxT RMSE [2.89], Average RMSE [2.48] : Use NWS
Source: BestForecast at 6:45 PM PDT on May 21, 2013
Descriptive Forecast
Saturday
partlycloudy Overcast in the morning, then mostly cloudy. High of 68F. Winds from the West at 10 to 15 mph.
Saturday Night
nt_mostlycloudy Overcast. Low of 52F. Winds from the West at 5 to 15 mph.
Hourly Forecast 6AM 12 Noon 6PM 12 Midnight
Temp. | Dew Point 53 | 47 63 | 49 60 | 52 54 | 52
Wind 8 mph WNW 12 mph West 14 mph West 9 mph West
Humidity 82% 61% 76% 94%
Chance of Precip. 10% 0% 0% 10%
Cloud Cover 100% 96% 28% 91%
Conditions Overcast Overcast Partly Cloudy Overcast
Sunrise & Sunset
5:52 AM
8:21 PM
The quality of the forecasted high temperature for this day is fair. MaxT RMSE [2.72], Average RMSE [2.14]
The National Weather Service forecast quality is poor. MaxT RMSE [3.78], Average RMSE [2.52] : Use NWS
Source: BestForecast at 6:45 PM PDT on May 21, 2013
Descriptive Forecast
Sunday
partlycloudy Overcast in the morning, then partly cloudy. High of 66F. Winds from the West at 5 to 15 mph.
Sunday Night
nt_mostlycloudy Mostly cloudy. Low of 52F. Winds from the WNW at 5 to 15 mph.
Hourly Forecast 6AM 12 Noon 6PM 12 Midnight
Temp. | Dew Point 54 | 50 63 | 51 61 | 51 53 | 50
Wind 7 mph WNW 10 mph West 13 mph West 9 mph West
Humidity 88% 64% 71% 86%
Chance of Precip. 10% 10% 0% 0%
Cloud Cover 100% 100% 49% 72%
Conditions Overcast Overcast Partly Cloudy Mostly Cloudy
Sunrise & Sunset
5:51 AM
8:21 PM
The quality of the forecasted high temperature for this day is good. MaxT RMSE [2.38], Average RMSE [2.64]
The National Weather Service forecast quality is poor. MaxT RMSE [3.85], Average RMSE [2.57] : Use NWS
Source: BestForecast at 6:45 PM PDT on May 21, 2013
Descriptive Forecast
Monday
mostlycloudy Mostly cloudy. High of 66F. Winds from the West at 10 to 15 mph.
Monday Night
nt_mostlycloudy Mostly cloudy. Low of 54F. Winds from the WNW at 5 to 15 mph.
Hourly Forecast 6AM 12 Noon 6PM 12 Midnight
Temp. | Dew Point 54 | 48 62 | 48 60 | 47 55 | 52
Wind 8 mph WNW 12 mph West 14 mph West 9 mph WNW
Humidity 83% 62% 65% 93%
Chance of Precip. 10% 0% 0% 0%
Cloud Cover 100% 100% 78% 36%
Conditions Overcast Overcast Mostly Cloudy Partly Cloudy
Sunrise & Sunset
5:51 AM
8:22 PM
The quality of the forecasted high temperature for this day is poor. MaxT RMSE [3.67], Average RMSE [2.28]
The National Weather Service forecast quality is poor. MaxT RMSE [3.63], Average RMSE [2.09] : Use NWS
Source: BestForecast at 6:45 PM PDT on May 21, 2013
Descriptive Forecast
Tuesday
partlycloudy Partly cloudy. High of 64F. Breezy. Winds from the West at 10 to 20 mph.
Tuesday Night
nt_partlycloudy Partly cloudy. Low of 52F. Winds from the WNW at 5 to 15 mph.
Hourly Forecast 6AM 12 Noon 6PM 12 Midnight
Temp. | Dew Point 55 | 53 61 | 54 61 | 51 52 | 50
Wind 7 mph WNW 12 mph West 15 mph West 9 mph WNW
Humidity 91% 79% 70% 92%
Chance of Precip. 10% 10% 0% 0%
Cloud Cover 82% 100% 40% 52%
Conditions Mostly Cloudy Overcast Partly Cloudy Partly Cloudy
Sunrise & Sunset
5:50 AM
8:23 PM
The quality of the forecasted high temperature for this day is poor. MaxT RMSE [4.02], Average RMSE [3.04]
Source: BestForecast at 6:45 PM PDT on May 21, 2013
Descriptive Forecast
Wednesday
partlycloudy Partly cloudy. High of 68F. Winds from the West at 5 to 15 mph.
Wednesday Night
nt_partlycloudy Partly cloudy. Low of 52F. Winds from the West at 5 to 15 mph.
Hourly Forecast 6AM 12 Noon 6PM 12 Midnight
Temp. | Dew Point 53 | 49 60 | 53 60 | 56 58 | 54
Wind 7 mph WNW 7 mph WSW 12 mph West 8 mph West
Humidity 87% 76% 87% 85%
Chance of Precip. 0% 10% 10% 10%
Cloud Cover 31% 44% 43% 65%
Conditions Partly Cloudy Partly Cloudy Partly Cloudy Mostly Cloudy
Sunrise & Sunset
5:50 AM
8:24 PM
The quality of the forecasted high temperature for this day is poor. MaxT RMSE [4.86], Average RMSE [3.98]
Source: BestForecast at 6:45 PM PDT on May 21, 2013
Descriptive Forecast
Thursday
partlycloudy Partly cloudy. High of 64F. Winds from the WNW at 5 to 15 mph.
Thursday Night
nt_partlycloudy Clear. Low of 50F. Winds from the WNW at 10 to 15 mph.
Hourly Forecast 6AM 12 Noon 6PM 12 Midnight
Temp. | Dew Point 55 | 53 61 | 52 62 | 50 53 | 50
Wind 6 mph WNW 8 mph WNW 14 mph WNW 11 mph WNW
Humidity 90% 71% 67% 90%
Chance of Precip. 10% 10% 10% 10%
Cloud Cover 56% 47% 38% 24%
Conditions Partly Cloudy Partly Cloudy Partly Cloudy Clear
Sunrise & Sunset
5:50 AM
8:24 PM
The quality of the forecasted high temperature for this day is poor. MaxT RMSE [5.78], Average RMSE [3.01]
Source: BestForecast at 6:45 PM PDT on May 21, 2013
Descriptive Forecast
Friday
clear Clear. High of 66F. Winds from the WNW at 5 to 20 mph.
Friday Night
nt_clear Clear. Low of 52F. Breezy. Winds from the NW at 10 to 20 mph.
Hourly Forecast 6AM 12 Noon 6PM 12 Midnight
Temp. | Dew Point 55 | 49 63 | 47 62 | 46 55 | 45
Wind 8 mph NW 10 mph NW 16 mph WNW 13 mph NW
Humidity 84% 57% 53% 70%
Chance of Precip. 10% 10% 0% 0%
Cloud Cover 11% 11% 12% 6%
Conditions Clear Clear Clear Clear
Sunrise & Sunset
Sun does not rise
Source: BestForecast at 6:45 PM PDT on May 21, 2013
Descriptive Forecast
Hourly Forecast 6AM 12 Noon 6PM 12 Midnight
Temp. | Dew Point 56 | 45 64 | 45 64 | 46 55 | 46
Wind 11 mph NW 12 mph NW 18 mph WNW 13 mph NW
Humidity 66% 49% 50% 68%
Chance of Precip. 0% 0% 0% 0%
Cloud Cover 0% % % %
Conditions Clear Clear Clear Clear
Sunrise & Sunset
Sun does not rise
Scientific Forecaster Discussion — MOS Weather Graph
Nearby
Active Notice: Public Information Statement  (US Severe Weather)
History & Almanac
May 21, 2013 Max Temp Min Temp
Normal 68 °F 52 °F
Record 92 °F (2000) 45 °F (1974)
Yesterday 83 °F 53 °F
Yesterday's Cooling Degree Days: 3
Choose a date
Earthquake Activity
City Distance Mag. Time & Date
Willows, California 121 miles 2.6 3:15 PM PDT
2013-05-15
The Geysers, California 75 miles 3.0 11:11 PM PDT
2013-05-14
Minimum magnitude displayed is 2.5.
More information at USGS.gov
Air Quality
  Air Quality AQ Index Pollutant
Yesterday Moderate
PM2.5
Yesterday Good
OZONE
Current Good
PM2.5
Current Good
OZONE
Tuesday Good
OZONE
Wednesday Good
OZONE
Thursday Good
OZONE
Friday Good
OZONE
Saturday Good
OZONE
Sunday Good
OZONE
Coastal Water Temperatures
Place Temperature
San Francisco, CA 57.9 °F
Richmond, CA 62.1 °F
Port Chicago, CA 66.9 °F
Marine Forecast
Astronomy
May. 21, 2013 Rise Set
Actual Time 5:55 AM PDT 8:18 PM PDT
Civil Twilight 5:25 AM PDT 8:48 PM PDT
Nautical Twilight 4:48 AM PDT 9:25 PM PDT
Astronomical Twilight 4:07 AM PDT 10:05 PM PDT
Moon 4:41 PM PDT (5/21) 3:21 AM PDT (5/21)
Length Of Visible Light 15h 22m
Length of Day
14h 23m
Tomorrow will be 1m 29s longer.
Waxing Gibbous, 87% of the Moon is Illuminated
Today
Waxing Gibbous
May 24
Full
May 31
Last Quarter
Jun 8
New
Jun 16
First Quarter
Visit Astronomy
Today's Extremes
State Highs State Lows
102 °F
Palm Springs
102 °F
Imperial
102 °F
El Centro
102 °F
Thermal
100 °F
Needles
32 °F
Big Bear City
33 °F
Truckee-Tahoe
39 °F
South Lake Tahoe
41 °F
Montague
43 °F
Alturas
Record Extremes
Snow Depth
Station Depth Elevation
Blue Lakes 0 in 8000 ft
Echo Peak 17 in 7800 ft
Forestdale Creek 0 in 8029 ft
Squaw Valley 0 in 8200 ft
Burnside Lake 0 in 8139 ft
Snow Depth Reports — Snow Depth Map
Follow us on Twitter Find us on Facebook Community
WunderPhotos®
Very cold weather for the time of the year
Mountain Rain
• • • • • • • • • •
Uploaded by: springsun
1,613,753 photos uploaded!
Upload a photo now
Visit WunderPhotos
WunderBlogs®
Help Us Develop A Site-wide Ale...
By shauntanner 10 hours ago
Earth Day 2013: Waiting to Get ...
By angelafritz 1 day ago
Testing New Feature Menu
By WunderZealots 8 days ago
Check out DIY Station Hardware ...
By garystofer 1 day ago
Visit WunderBlogs
Travel & Activities
Travel Planning
Travel Planner Road Trip Planner
Destination? *
When are you going?
to
Is there an activity you would like to explore?
* Required field
View all Travel Tools
Aviation
City Temp. Conditions Updated
San Francisco 57 °F Partly Cloudy 5:56 PM PDT
Oakland 64 °F Partly Cloudy 5:53 PM PDT
Hayward 62 °F Clear 5:54 PM PDT
Half Moon Bay 54 °F Haze 6:35 PM PDT
View all Aviation Tools
Flight To ETA Status
AMF242
Sacramento, CA 		KHWD 06:51PM On Time
ASH2747
Phoenix, AZ 		KOAK 06:29PM On Time
SWA2090
San Diego, CA 		KOAK 06:40PM On Time
SWA3749
Los Angeles, CA 		KOAK 06:42PM On Time
SWA3604
Santa Ana, CA 		KOAK 06:43PM On Time
SNC1027
Sacramento, CA 		KSFO 06:30PM On Time
SKW5538
Vancouver, British Columbia 		KSFO 06:39PM On Time
FFT665
Denver, CO 		KSFO 06:39PM On Time
VRD919
Las Vegas, NV 		KSFO 06:40PM On Time
Flight Tracker by FlightAware FlightAware
View U.S. Airport Delays
Type Condition
Flight Rule: VFR (KSFO)
Wind Speed: 30.0 kts.
Wind Dir: 280° (West)
Ceiling: Unlimited

METAR KSFO 220056Z 28030G41KT 10SM FEW020 14/06 A2996 RMK AO2 PK WND 28044/0046 SLP144 T01390061

View all Reports & Maps
Nearby Events
Event Date Forecast
Ben Howard 8:00 PM PDT
2013-04-15		 Partly Cloudy, 46°F
Dead Can Dance 7:00 PM PDT
2013-04-15		 Clear, 47°F
Music at Meyer / SF Opera Center Adler Fellows In Concert 7:00 PM PDT
2013-04-15		 Clear, 47°F
Private Tour April 2013 6:00 PM PDT
2013-04-15		 Clear, 49°F
The Real Sf Tour March - April 2013 9:00 AM PDT
2013-04-15		 Partly Cloudy, 49°F
A Day To Remember 7:00 PM PDT
2013-04-15		 Clear, 47°F
Event data courtesy eviesays.com
Sports
View all Sports Weather
Videos
Year In Weather 2012

Watch the nearly year-long satellite animation as Weather Underground calls out the most significant weather events of the past year, including Superstorm Sandy and Hurricane Isaac.

Visit Our Video Section
Weather Stations
Station Location Temp. Dew Point Humidity Wind Precipitation Elevation Updated Type Website
SOMA - Near Van Ness, San Francisco, CA 59.7 °F 47 °F 63% West  at  8.0 mph 0.00 in / hr 49 ft 6:46 PM PDT Rapid Fire
North Mission (Valencia, San Francisco, CA 59.0 °F 40 °F 49% NNW  at  5.0 mph 0.00 in / hr 62 ft 6:43 PM PDT Normal  
SOMA, San Francisco, CA 56.6 °F 46 °F 67% WSW  at  15.0 mph 0.00 in / hr 23 ft 6:42 PM PDT Normal
Mission (at Bar and Burrito), San Francisco, CA 55.9 °F 46 °F 69% SSW  at  9.0 mph 0.00 in / hr 52 ft 6:46 PM PDT Rapid Fire  
HADS SAN FRANCISCO DOWNTOWN CA, San Francisco, CA 58 °F 44 °F 60% North  at  - 0.00 in / hr 174 ft 5:43 PM PDT MADIS
SoMa, San Francisco, CA 57.7 °F 47 °F 68% West  at  4.0 mph 0.00 in / hr 0 ft 6:42 PM PDT Normal
Mission Bay - My weather is better than , San Francisco, CA 61.5 °F 46 °F 57% North  at  0.0 mph 0.00 in / hr 80 ft 6:36 PM PDT Normal  
Nob Hill, San Francisco, CA 58.1 °F 46 °F 63% NE  at  22.8 mph 0.08 in / hr 397 ft 6:45 PM PDT Normal  
Castro/San Francisco, San Francisco, CA 62.8 °F 32 °F 24% WNW  at  3.6 mph 0.00 in / hr 200 ft 6:45 PM PDT Normal  
The Castro, San Francisco, CA 55.1 °F 44 °F 67% WNW  at  16.0 mph 0.00 in / hr 188 ft 6:44 PM PDT Normal
The Mission: Even the weather is hip, San Francisco, CA 56.6 °F 46 °F 68% West  at  12.7 mph 0.00 in / hr 65 ft 6:45 PM PDT Rapid Fire  
Drew School, San Francisco, CA 55.2 °F 42 °F 62% WSW  at  17.4 mph 0.00 in / hr 194 ft 6:45 PM PDT Normal
Financial District, San Francisco, CA 59.4 °F 36 °F 41% ESE  at  3.6 mph 0.00 in / hr 100 ft 6:46 PM PDT Normal
Town School For Boys, San Francisco, CA 57.9 °F 48 °F 70% SW  at  7.8 mph 0.00 in / hr 302 ft 5:49 PM PDT Normal
APRSWXNET San Francisco CA , San Francisco, CA 64 °F 47 °F 54% SW  at  9 mph 0.00 in / hr 290 ft 6:17 PM PDT MADIS
Noe Valley, San Francisco, CA 53.4 °F 46 °F 75% NNW  at  21.0 mph 0.00 in / hr 308 ft 6:45 PM PDT Rapid Fire  
Noe Valley, San Francisco, CA 56.0 °F -44 °F - West  at  7.0 mph 0.00 in / hr 301 ft 6:45 PM PDT Normal
little house in the mission, San Francisco, CA 61.0 °F 46 °F 57% West  at  10.9 mph - / hr 42 ft 6:35 PM PDT Normal  
Diamond Heights, San Francisco, CA 51.5 °F 45 °F 79% NW  at  10.0 mph 0.00 in / hr 512 ft 6:45 PM PDT Rapid Fire  
NOS_PORTS Pier 1, CA, San Francisco, CA 59 °F - - WSW  at  12 mph 0.00 in / hr 0 ft 6:12 PM PDT MADIS
Billy Goat Hill, San Francisco, CA 53.7 °F 46 °F 76% WNW  at  3.0 mph 0.00 in / hr 340 ft 6:45 PM PDT Normal  
inner sunset, San Francisco, CA 53.5 °F 46 °F 75% SSW  at  8.6 mph 0.00 in / hr 282 ft 6:45 PM PDT Rapid Fire
Presidio, San Francisco, CA 57.2 °F 47 °F 68% North  at  8.0 mph 0.00 in / hr 0 ft 6:46 PM PDT Rapid Fire  
Twin Peaks, San Francisco, CA 53.1 °F 46 °F 78% NNW  at  7.0 mph 0.00 in / hr 600 ft 6:45 PM PDT Normal  
Golden Gate Heights, San Francisco, CA 53.1 °F 47 °F 79% NNW  at  11.0 mph 0.00 in / hr 574 ft 6:42 PM PDT Normal
APRSWXNET San Francisco CA , San Francisco, CA 53 °F 46 °F 77% WSW  at  20 mph 0.00 in / hr 406 ft 6:04 PM PDT MADIS
Glen Park, San Francisco, CA 54.0 °F 49 °F 86% NNW  at  0.0 mph 0.00 in / hr 0 ft 6:43 PM PDT Normal  
Portola, San Francisco, CA 54.7 °F 45 °F 69% West  at  17.7 mph 0.00 in / hr 290 ft 6:46 PM PDT Rapid Fire
Would you like to share your weather data with the rest of the world? Add Your Weather Station!
Public Information Statement
Mobile & Email Alerts Statement as of 4:37 PM EDT on May 21, 2013

...Highest Winds In The Past Hour...


... Location... ... time... ... wind...
... Offshore reporting stations...

Buoy 28 (maritime) 1250 PM may 21 45 mph
Drakes Bay - pt Reyes (nos-nwlon) 1236 PM may 21 40 mph
buoy 13 (maritime) 1250 PM may 21 36 mph
28 WSW Santa Cruz (maritime) 1250 PM may 21 36 mph
Anita Rock San Francisco (wxflow) 113 PM may 21 35 mph
buoy 26 (maritime) 1250 PM may 21 34 mph
Benicia bridge (nos-ports) 106 PM may 21 33 mph
2 WNW Vine Hill (nos-ports) 1248 PM may 21 32 mph
Aquatic Park (25 ft)(wxflow) 114 PM may 21 29 mph
1 W Bodega Bay (40 ft)(wxflow) 1245 PM may 21 29 mph
pt Potrero (nos-ports) 1248 PM may 21 27 mph
San Leandro Marina (25 ft)(wxflow) 1257 PM may 21 27 mph
Treasure Island (wxflow) 113 PM may 21 26 mph
crissy field (nos-ports) 1236 PM may 21 26 mph
4 SSW Berkeley (nos-ports) 106 PM may 21 25 mph
1 WNW Rodeo (nos-ports) 1254 PM may 21 24 mph
1 W Point Arena (nos-nwlon) 1236 PM may 21 23 mph
4 NE San Francisco (4 ft)(wxflow) 1253 PM may 21 21 mph
3 WSW Richmond (nos-ports) 106 PM may 21 20 mph

... California...

... Alameda County...
Calaveras Rd RAWS (1230 ft)(goes) 118 PM may 21 29 mph
3 se Hayward (10 ft)(aprswxnet) 119 PM may 21 29 mph
Alameda Marina (57 ft)(wxflow) 100 PM may 21 25 mph
Hayward air terminal (43 ft)(asos) 1254 PM may 21 23 mph
5 SSW Berkeley (nos-ports) 1242 PM may 21 23 mph
2 S Hayward (52 ft)(aprswxnet) 107 PM may 21 23 mph
2 se Oakland (42 ft)(urbanet) 1254 PM may 21 22 mph
Livermore Municipal Airport (asos) 1253 PM may 21 22 mph
1 NE San Leandro (95 ft)(urbanet) 1254 PM may 21 22 mph
Berkeley Marina (45 ft)(wxflow) 107 PM may 21 21 mph
2 se Livermore (567 ft)(aprswxnet) 1237 PM may 21 21 mph
Alameda point (nos-ports) 106 PM may 21 21 mph

... Contra Costa County...
los Vaqueros RAWS (1120 ft)(goes) 1245 PM may 21 31 mph
Mallory Ridge RAWS (2040 ft)(goes) 102 PM may 21 28 mph
2 N Pittsburg (nos-ports) 1236 PM may 21 27 mph
2 WSW Rodeo (25 ft)(wxflow) 1245 PM may 21 26 mph
Pittsburg (46 ft)(urbanet) 1239 PM may 21 24 mph
3 S Richmond (164 ft)(aprswxnet) 1253 PM may 21 23 mph
1 W Brentwood (29 ft)(aprswxnet) 1246 PM may 21 23 mph
1 NNE Pittsburg (32 ft)(aprswxnet) 118 PM may 21 22 mph
Concord Buchanan Field (18 ft)(asos) 1253 PM may 21 22 mph
3 S Richmond (164 ft)(nos-ports) 1248 PM may 21 21 mph
2 se Richmond (68 ft)(aprswxnet) 117 PM may 21 20 mph

... Marin County...
pt Reyes lighthouse (525 ft)(mesowest) 1240 PM may 21 45 mph
pt Reyes rca (86 ft)(mesowest) 1240 PM may 21 34 mph
3 WNW Novato (216 ft)(aprswxnet) 117 PM may 21 34 mph
Tomales Bay (16 ft)(wxflow) 114 PM may 21 34 mph
Woodacre RAWS (1400 ft)(mtr-alert) 1251 PM may 21 32 mph
3 SSW Sausalito (30 ft)(wxflow) 113 PM may 21 26 mph
Tiburon (wxflow) 102 PM may 21 26 mph
Corte Madera (12 ft)(wxflow) 1245 PM may 21 24 mph
pt Blunt Angel Island (10 ft)(wxflow) 102 PM may 21 22 mph
Tamalpais-Homestead (350 ft)(aprswxnet) 115 PM may 21 21 mph
Gnoss Field Airport (awos) 1235 PM may 21 21 mph

... Monterey County...
Bradley RAWS (540 ft)(goes) 112 PM may 21 28 mph
1 NE King City (389 ft)(aws) 119 PM may 21 25 mph
Greenfield (260 ft)(aws) 109 PM may 21 23 mph
Hastings RAWS (1824 ft)(goes) 111 PM may 21 22 mph
Salinas ap (74 ft)(asos) 1253 PM may 21 22 mph
Arroyo Seco RAWS (980 ft)(goes) 104 PM may 21 21 mph
Monterey Peninsula Airport (asos) 1254 PM may 21 20 mph

... Napa County...
Napa County Airport (14 ft)(asos) 1250 PM may 21 30 mph
2 se Angwin (1729 ft)(aprswxnet) 107 PM may 21 20 mph

... San Benito County...
Black Mountain (3500 ft)(goes) 107 PM may 21 24 mph
2 NNW Hollister (229 ft)(awos) 1250 PM may 21 22 mph

... San Francisco County...
1 SW San Francisco (188 ft)(aprswxnet) 129 PM may 21 28 mph
1 SW San Francisco (188 ft)(aprswxnet) 103 PM may 21 28 mph
1 ENE San Francisco (16 ft)(aprswxnet) 127 PM may 21 22 mph
San Francisco (49 ft)(aprswxnet) 110 PM may 21 22 mph
2 NE San Francisco (nos-ports) 1242 PM may 21 22 mph
4 W San Francisco (274 ft)(urbanet) 1254 PM may 21 22 mph
Alcatraz (65 ft)(wxflow) 106 PM may 21 21 mph

... San Mateo County...
San Francisco wso ap (8 ft)(asos) 1235 PM may 21 44 mph
Spring Vly RAWS (1075 ft)(goes) 118 PM may 21 42 mph
2 se Brisbane (15 ft)(wxflow) 1255 PM may 21 37 mph
2 ENE San Mateo (25 ft)(wxflow) 108 PM may 21 34 mph
2 ENE San Mateo (25 ft)(wxflow) 106 PM may 21 31 mph
Half Moon Bay Airport (65 ft)(awos) 1255 PM may 21 30 mph
candlestick pt (45 ft)(wxflow) 1250 PM may 21 29 mph
1 WSW El Granada (24 ft)(wxflow) 1255 PM may 21 29 mph
2 ENE Redwood City (nos-ports) 106 PM may 21 27 mph
Pulgas RAWS (644 ft)(goes) 118 PM may 21 26 mph
1 N San Mateo (9 ft)(aprswxnet) 1249 PM may 21 23 mph
4 se El Granada (78 ft)(urbanet) 1239 PM may 21 23 mph
1 se Woodside (130 ft)(aprscsvparse) 118 PM may 21 22 mph
Emerald Lake hills (261 ft)(wxforyou) 1251 PM may 21 20 mph
San Carlos Airport (3 ft)(awos) 1252 PM may 21 20 mph

... Santa Clara County...
San Martin (86 ft)(awos) 115 PM may 21 25 mph

... Santa Cruz County...
9 WSW Boulder Creek (35 ft)(wxflow) 107 PM may 21 41 mph

... Sonoma County...
5 W Petaluma (419 ft)(aprswxnet) 1242 PM may 21 32 mph
2 W Bodega Bay (39 ft)(map) 100 PM may 21 31 mph
Petaluma Municipal Airport (awos) 115 PM may 21 29 mph
Petaluma (7 ft)(aprswxnet) 130 PM may 21 28 mph
Hawkeye RAWS (2020 ft)(raws) 1256 PM may 21 26 mph
5 NNW Bodega Bay (335 ft)(aprswxnet) 124 PM may 21 25 mph
1 ESE Santa Rosa (196 ft)(aprswxnet) 115 PM may 21 23 mph
6 se Gualala (196 ft)(aprswxnet) 1240 PM may 21 21 mph
4 se occidental (357 ft)(aprswxnet) 119 PM may 21 21 mph
3 NW Roseland (106 ft)(aprswxnet) 1257 PM may 21 20 mph
3 NW Petaluma (42 ft)(aprswxnet) 112 PM may 21 20 mph
Healdsburg Municipal Airport 1235 PM may 21 20 mph


Observations are collected from a variety of sources with varying
equipment and exposures. Not all data listed is considered official. The
National Weather Service thanks its private and public partners for
providing US with this data.


View All U.S. Severe Weather