Calistoga, CA

4:22 AM PDT on May 25, 2012 (GMT -0700)

Elev: 443 ft

Lon: 122.6° W

Lat: 38.6° N

Source

Rapid Fire Updates™

Updated 4:19 AM PDT

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Active Advisory: Special Statement (US Severe Weather)

Tropical Weather: Invest 94 (North Atlantic) Hurricane Bud (East Pacific) Typhoon Sanvu (Western Pacific)

View WunderPhotos® in: Calistoga, California

Weather Summary

Jessica Parker

Weather Underground Forecast for Friday, May 25, 2012.

Expect more active weather to develop across the Great Lakes on Friday, as a low pressure system moves from the Upper Midwest into eastern Canada. This system will push a cold front over the Great Lakes and Midwest, producing scattered showers and thunderstorms throughout the day. There is a slight chance that some of these storms will turn severe with strong winds and large hail. Rainfall totals will range from 1 to 2 inches, with over 2 inches likely in areas of severe weather development.

Behind this activity in the West, a low pressure system will move over the Great Basin and into the Southern Rockies. Flow around this system will produce cooler temperatures across the West, while also triggering scattered showers over the Pacific Northwest, northern California, and Intermountain West. Snow showers may develop again across the highest elevations of the Northern Rockies.

Meanwhile in the East, high pressure builds from the Plains, over the Mississippi River Valley, and into the Eastern US. This will keep moisture away to the north, allowing for dry, sunny, and warm conditions. High temperatures will range in the 80s and 90s from the Central Plains through the Eastern Valleys, with parts of the Southern US reaching into the lower 100s.

Weather Underground Broadcast Network

Calistoga Weather at a Glance

Updated 4:19 AM PDT

Weather Station - report

Greater Calistoga, Calistoga

Elevation

988 ft

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Station Select

Now

Clear

Temperature

44.6 °F

Feels Like 38 °F

Wind(mph)

15.9

Sunrise / Set

5:50 AM

8:24 PM

Moon

Waxing Crescent

More Astronomy

Today

68 °F

T-storms

20% chance of precipitation

Tonight

46 °F

Chance of Rain

20% chance of precipitation

Tomorrow

75 | 46 °F

Clear

Sunday

77 | 48 °F

Partly Cloudy

Monday

68 | 46 °F

Partly Cloudy

Tuesday

73 | 50 °F

Partly Cloudy

10-Day Forecast - Hourly Forecast

Today is forecast to be Much Cooler than yesterday.

Current Data Today's Almanac Extended Forecast

Radar Satellite Webcams

Conditions

Pressure

29.70 in

Visibility

10.0 miles

Clouds

Clear -

Moisture

Humidity

82%

Rainfall

0.00 in

Snow Depth

Not available.

METAR

METAR KSTS 251053Z AUTO 31011KT 10SM CLR 10/03 A2972 RMK AO2 SLP056 T01000028

Don't speak METAR? Read our FAQ.

Weather Radio

Weather Radio Index

Temperature

Windchill

38 °F

Dew Point

40 °F

Wind

Speed / Dir

15.9 mph from West

Wind Gust

Health

0 out of 16

Pollen

6.70 out of 12
Pollen Forecast

Ozone

Good

PM2.5

Good

Flu Activity

Local Activity
View Flu Map

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Source: BestForecast

Descriptive Forecast

Friday

Partly cloudy with thunderstorms and a chance of rain in the morning, then overcast with thunderstorms and a chance of rain. High of 68F. Breezy. Winds from the NW at 15 to 20 mph. Chance of rain 20%.

Friday Night

Partly cloudy with a chance of rain in the evening, then mostly cloudy. Low of 46F. Winds from the NW at 5 to 10 mph. Chance of rain 20%.

Saturday

Partly cloudy in the morning, then clear. High of 75F. Winds from the WNW at 5 to 10 mph.

Saturday Night

Clear in the evening, then partly cloudy. Low of 46F. Winds from the West at 5 to 15 mph.

Sunday

Partly cloudy. High of 77F. Winds from the WSW at 5 to 15 mph.

Sunday Night

Partly cloudy. Fog overnight. Low of 48F. Winds from the WNW at 5 to 10 mph.

Monday

Mostly cloudy in the morning, then clear. High of 68F. Winds from the West at 5 to 15 mph.

Monday Night

Partly cloudy. Fog overnight. Low of 46F. Winds from the WNW at 5 to 10 mph.

Tuesday

Partly cloudy. High of 73F. Winds from the West at 5 to 10 mph.

Tuesday Night

Partly cloudy. Low of 50F. Winds from the NW at 5 to 10 mph.

Wednesday

Partly cloudy. High of 81F. Winds from the WNW at 5 to 10 mph.

Wednesday Night

Partly cloudy. Low of 52F. Winds from the NW at 5 to 10 mph.

Thursday

Clear. High of 91F. Winds from the West at 5 to 10 mph.

Thursday Night

Partly cloudy. Low of 54F. Winds from the NW at 5 to 10 mph.

Friday

Partly cloudy. High of 79F. Winds from the West at 5 to 10 mph.

Friday Night

Partly cloudy. Low of 55F. Winds from the WNW at 5 to 15 mph.

Saturday

Partly cloudy. High of 77F. Winds from the West at 5 to 15 mph.

Saturday Night

Partly cloudy. Low of 50F. Winds from the WNW at 5 to 15 mph.

Sunday

Clear. High of 75F. Winds from the WNW at 5 to 15 mph.

Sunday Night

Clear. Low of 50F. Winds from the NW at 10 to 15 mph.

Monday

Clear. High of 77F. Winds from the WNW at 5 to 15 mph.

Monday Night

Clear. Low of 50F. Winds from the NW at 10 to 15 mph.

Loading…

Updated:

WunderMap®

Nearby Airports

Santa Rosa, CA (KSTS) | 50 °F | Clear Petaluma, CA (KO69) | 46 °F | Partly Cloudy Napa County, CA (KAPC) | 48 °F | Clear Novato, CA (KDVO) | 50 °F | Clear

Nearby Weather Stations

31 HADS ANGWIN PACIFIC UNION COLLE | 40 °F 32 Edgewood | 41.9 °F 33 Las Posadas | 41.9 °F 34 Jerusalem Grade | 42.3 °F

Displaying 0–0 of 34 Stations ► ◄

About Weather Stations | See all Weather Stations

Forecast

View Calendar 10-Day Forecast for station KSTS

Friday, 25

68 | 46 °F

T-storms

Chance of
Precipitation

20%

Saturday, 26

75 | 46 °F

Clear

Chance of
Precipitation

10%

Sunday, 27

77 | 48 °F

Partly Cloudy

Chance of
Precipitation

Monday, 28

68 | 46 °F

Partly Cloudy

Chance of
Precipitation

Tuesday, 29

73 | 50 °F

Partly Cloudy

Chance of
Precipitation

Wednesday, 30

81 | 52 °F

Partly Cloudy

Chance of
Precipitation

Thursday, 31

91 | 54 °F

Clear

Chance of
Precipitation

Friday, 1

79 | 55 °F

Partly Cloudy

Chance of
Precipitation

Saturday, 2

77 | 50 °F

Partly Cloudy

Chance of
Precipitation

Sunday, 3

75 | 50 °F

Clear

Chance of
Precipitation

Source: BestForecast at 1:01 AM PDT on May 25, 2012

Descriptive Forecast

Friday

Friday Night

Partly cloudy with a chance of rain in the evening, then mostly cloudy. Low of 46F. Winds from the NW at 5 to 10 mph. Chance of rain 20%.

Hourly Forecast	6AM	12 Noon	6PM	12 Midnight
Temp. \| Dew Point	45 \| 42	61 \| 41	65 \| 42	51 \| 44
Wind	10 mph WNW	16 mph NW	12 mph NW	4 mph NW
Humidity	87%	47%	41%	75%
Chance of Precip.	20%	20%	20%	10%
Cloud Cover	40%	63%	42%	30%
Conditions	Chance of Rain	Thunderstorm	Chance of Rain	Partly Cloudy
Sunrise & Sunset	5:50 AM 8:24 PM

Source: Weather Underground BestForecast View Detailed Hourly Forecast

The quality of the forecasted high temperature for this day is good. MaxT RMSE [1.98], Average RMSE [2.43]

The National Weather Service forecast quality is fair. MaxT RMSE [2.56], Average RMSE [2.74] : Use NWS

Source: BestForecast at 1:01 AM PDT on May 25, 2012

Descriptive Forecast

Saturday

Partly cloudy in the morning, then clear. High of 75F. Winds from the WNW at 5 to 10 mph.

Saturday Night

Clear in the evening, then partly cloudy. Low of 46F. Winds from the West at 5 to 15 mph.

Hourly Forecast	6AM	12 Noon	6PM	12 Midnight
Temp. \| Dew Point	49 \| 45	65 \| 47	67 \| 49	50 \| 46
Wind	6 mph NW	9 mph West	10 mph West	3 mph West
Humidity	85%	52%	52%	85%
Chance of Precip.	10%	10%	10%	10%
Cloud Cover	6%	30%	17%	0%
Conditions	Clear	Partly Cloudy	Clear	Clear
Sunrise & Sunset	5:50 AM 8:24 PM

Source: Weather Underground BestForecast View Detailed Hourly Forecast

The quality of the forecasted high temperature for this day is fair. MaxT RMSE [2.67], Average RMSE [3.11]

The National Weather Service forecast quality is fair. MaxT RMSE [3.36], Average RMSE [2.98] : Use NWS

Source: BestForecast at 1:01 AM PDT on May 25, 2012

Descriptive Forecast

Sunday

Partly cloudy. High of 77F. Winds from the WSW at 5 to 15 mph.

Sunday Night

Partly cloudy. Fog overnight. Low of 48F. Winds from the WNW at 5 to 10 mph.

Hourly Forecast	6AM	12 Noon	6PM	12 Midnight
Temp. \| Dew Point	49 \| 47	69 \| 47	71 \| 46	52 \| 48
Wind	1 mph West	8 mph WSW	10 mph West	8 mph WNW
Humidity	90%	47%	41%	83%
Chance of Precip.	10%	0%	0%	0%
Cloud Cover	44%	47%	11%	0%
Conditions	Partly Cloudy	Partly Cloudy	Clear	Clear
Sunrise & Sunset	5:49 AM 8:25 PM

Source: Weather Underground BestForecast View Detailed Hourly Forecast

The quality of the forecasted high temperature for this day is fair. MaxT RMSE [3.06], Average RMSE [2.86]

The National Weather Service forecast quality is poor. MaxT RMSE [3.94], Average RMSE [3.10] : Use NWS

Source: BestForecast at 1:01 AM PDT on May 25, 2012

Descriptive Forecast

Monday

Mostly cloudy in the morning, then clear. High of 68F. Winds from the West at 5 to 15 mph.

Monday Night

Partly cloudy. Fog overnight. Low of 46F. Winds from the WNW at 5 to 10 mph.

Hourly Forecast	6AM	12 Noon	6PM	12 Midnight
Temp. \| Dew Point	51 \| 49	63 \| 49	64 \| 46	51 \| 46
Wind	6 mph WNW	10 mph West	11 mph West	7 mph WNW
Humidity	94%	56%	51%	83%
Chance of Precip.	0%	0%	0%	0%
Cloud Cover	3%	49%	10%	5%
Conditions	Fog	Partly Cloudy	Clear	Clear
Sunrise & Sunset	5:49 AM 8:26 PM

Source: Weather Underground BestForecast View Detailed Hourly Forecast

The quality of the forecasted high temperature for this day is fair. MaxT RMSE [3.31], Average RMSE [2.70]

The National Weather Service forecast quality is poor. MaxT RMSE [4.48], Average RMSE [3.12] : Use NWS

Source: BestForecast at 1:01 AM PDT on May 25, 2012

Descriptive Forecast

Tuesday

Partly cloudy. High of 73F. Winds from the West at 5 to 10 mph.

Tuesday Night

Partly cloudy. Low of 50F. Winds from the NW at 5 to 10 mph.

Hourly Forecast	6AM	12 Noon	6PM	12 Midnight
Temp. \| Dew Point	51 \| 48	66 \| 44	70 \| 47	55 \| 47
Wind	4 mph NW	5 mph WSW	8 mph West	7 mph NW
Humidity	90%	46%	46%	77%
Chance of Precip.	0%	0%	0%	0%
Cloud Cover	30%	36%	23%	3%
Conditions	Fog	Partly Cloudy	Clear	Clear
Sunrise & Sunset	5:48 AM 8:27 PM

Source: Weather Underground BestForecast View Detailed Hourly Forecast

The quality of the forecasted high temperature for this day is poor. MaxT RMSE [3.94], Average RMSE [2.86]

The National Weather Service forecast quality is poor. MaxT RMSE [4.85], Average RMSE [3.09] : Use NWS

Source: BestForecast at 1:01 AM PDT on May 25, 2012

Descriptive Forecast

Wednesday

Partly cloudy. High of 81F. Winds from the WNW at 5 to 10 mph.

Wednesday Night

Partly cloudy. Low of 52F. Winds from the NW at 5 to 10 mph.

Hourly Forecast	6AM	12 Noon	6PM	12 Midnight
Temp. \| Dew Point	53 \| 49	75 \| 51	75 \| 50	58 \| 50
Wind	5 mph NW	5 mph West	8 mph West	7 mph NW
Humidity	86%	43%	42%	75%
Chance of Precip.	0%	0%	0%	0%
Cloud Cover	29%	28%	8%	0%
Conditions	Partly Cloudy	Partly Cloudy	Clear	Clear
Sunrise & Sunset	5:48 AM 8:27 PM

Source: Weather Underground BestForecast View Detailed Hourly Forecast

The quality of the forecasted high temperature for this day is poor. MaxT RMSE [5.02], Average RMSE [2.80]

The National Weather Service forecast quality is poor. MaxT RMSE [5.21], Average RMSE [3.03] : Use NWS

Source: BestForecast at 1:01 AM PDT on May 25, 2012

Descriptive Forecast

Thursday

Clear. High of 91F. Winds from the West at 5 to 10 mph.

Thursday Night

Partly cloudy. Low of 54F. Winds from the NW at 5 to 10 mph.

Hourly Forecast	6AM	12 Noon	6PM	12 Midnight
Temp. \| Dew Point	54 \| 50	73 \| 47	74 \| 45	58 \| 51
Wind	4 mph NNW	5 mph West	7 mph West	5 mph NW
Humidity	85%	40%	38%	80%
Chance of Precip.	0%	0%	0%	0%
Cloud Cover	20%	22%	4%	1%
Conditions	Clear	Clear	Clear	Clear
Sunrise & Sunset	5:48 AM 8:27 PM

Source: Weather Underground BestForecast View Detailed Hourly Forecast

The quality of the forecasted high temperature for this day is poor. MaxT RMSE [5.68], Average RMSE [2.36]

Source: BestForecast at 1:01 AM PDT on May 25, 2012

Descriptive Forecast

Friday

Partly cloudy. High of 79F. Winds from the West at 5 to 10 mph.

Friday Night

Partly cloudy. Low of 55F. Winds from the WNW at 5 to 15 mph.

Hourly Forecast	6AM	12 Noon	6PM	12 Midnight
Temp. \| Dew Point	55 \| 51	72 \| 47	72 \| 45	55 \| 49
Wind	3 mph NW	5 mph WSW	10 mph West	9 mph WNW
Humidity	88%	41%	39%	79%
Chance of Precip.	0%	0%	0%	10%
Cloud Cover	32%	44%	12%	6%
Conditions	Partly Cloudy	Partly Cloudy	Clear	Clear
Sunrise & Sunset	5:48 AM 8:27 PM

Source: Weather Underground BestForecast View Detailed Hourly Forecast

The quality of the forecasted high temperature for this day is poor. MaxT RMSE [4.32], Average RMSE [4.05]

Source: BestForecast at 1:01 AM PDT on May 25, 2012

Descriptive Forecast

Saturday

Partly cloudy. High of 77F. Winds from the West at 5 to 15 mph.

Saturday Night

Partly cloudy. Low of 50F. Winds from the WNW at 5 to 15 mph.

Hourly Forecast	6AM	12 Noon	6PM	12 Midnight
Temp. \| Dew Point	56 \| 53	68 \| 48	70 \| 49	53 \| 47
Wind	7 mph WNW	8 mph West	12 mph West	10 mph WNW
Humidity	87%	48%	49%	80%
Chance of Precip.	10%	10%	10%	10%
Cloud Cover	29%	51%	31%	24%
Conditions	Partly Cloudy	Partly Cloudy	Partly Cloudy	Clear
Sunrise & Sunset	5:48 AM 8:27 PM

Source: Weather Underground BestForecast View Detailed Hourly Forecast

The quality of the forecasted high temperature for this day is poor. MaxT RMSE [4.37], Average RMSE [3.97]

Source: BestForecast at 1:01 AM PDT on May 25, 2012

Descriptive Forecast

Sunday

Clear. High of 75F. Winds from the WNW at 5 to 15 mph.

Sunday Night

Clear. Low of 50F. Winds from the NW at 10 to 15 mph.

Hourly Forecast	6AM	12 Noon	6PM	12 Midnight
Temp. \| Dew Point	52 \| 47	68 \| 57	68 \| 52	53 \| 43
Wind	9 mph NW	10 mph WNW	15 mph WNW	12 mph NW
Humidity	85%	67%	54%	67%
Chance of Precip.	10%	0%	0%	0%
Cloud Cover	9%	7%	5%	3%
Conditions	Clear	Clear	Clear	Clear
Sunrise & Sunset	5:48 AM 8:27 PM

Source: Weather Underground BestForecast View Detailed Hourly Forecast

Source: BestForecast at 1:01 AM PDT on May 25, 2012

Descriptive Forecast

Monday

Clear. High of 77F. Winds from the WNW at 5 to 15 mph.

Monday Night

Clear. Low of 50F. Winds from the NW at 10 to 15 mph.

Hourly Forecast	6AM	12 Noon	6PM	12 Midnight
Temp. \| Dew Point	52 \| 46	70 \| 56	72 \| 53	53 \| 42
Wind	10 mph NW	9 mph WNW	14 mph WNW	11 mph NW
Humidity	76%	60%	50%	66%
Chance of Precip.	0%	0%	0%	0%
Cloud Cover	1%	1%	1%	%
Conditions	Clear	Clear	Clear	Clear
Sunrise & Sunset	5:48 AM 8:27 PM

Source: Weather Underground BestForecast View Detailed Hourly Forecast

Scientific Forecaster Discussion — MOS Weather Graph

Nearby

Maps & Radar

Weather Maps - Calistoga, CA (Regional Radar)

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Local Satellite WunderMap

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History & Almanac

May 25, 2012	Max Temp	Min Temp
Normal (KSTS)	76 °F	48 °F
Record (KSTS)	84 °F (2000)	41 °F (2008)
Yesterday	74 °F	51 °F
Yesterday's Heating Degree Days: 2

Choose a date

Earthquake Activity

City	Distance	Mag.	Time & Date
No recent earthquake activity has been reported nearby.

Minimum magnitude displayed is 2.5.

More information at USGS.gov

Air Quality

	Air Quality	Pollutant
Yesterday	Good	OZONE
Yesterday	Good	PM2.5
Current	Good	OZONE
Current	Good	PM2.5
Friday	Good	OZONE
Saturday	Good	OZONE
Sunday	Good	OZONE
Monday	Good	OZONE
Tuesday	Good	OZONE

Astronomy

May. 25, 2012	Rise	Set
Actual Time	5:50 AM PDT	8:24 PM PDT
Civil Twilight	5:20 AM PDT	8:54 PM PDT
Nautical Twilight	4:41 AM PDT	9:33 PM PDT
Astronomical Twilight	3:59 AM PDT	10:16 PM PDT
Moon	9:54 AM PDT	No Moon Set
Length Of Visible Light	15h 34m
Length of Day	14h 33m Tomorrow will be 1m 21s longer.

Waxing Crescent, 18% of the Moon is Illuminated
Today Waxing Crescent	May 28 First Quarter	Jun 4 Full	Jun 11 Last Quarter	Jun 19 New

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Today's Extremes

State Highs	State Lows
82 °F Needles 75 °F Blythe 72 °F Palm Springs 72 °F Thermal 71 °F Twentynine Palms	32 °F Truckee-Tahoe 35 °F Weaverville 35 °F Blue Canyon 36 °F Alturas 36 °F Mount Shasta

Record Extremes

Snow Depth

Station	Depth	Elevation
CSS Lab	0 in	6900 ft
Ward Creek #3	0 in	6750 ft
Squaw Valley	206 in	8200 ft
Independence Lake	39 in	8450 ft
Rubicon #2	1 in	7500 ft

Snow Depth Reports — Snow Depth Map

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Travel & Activities

Travel Planning

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Nearby Events

Event	Date	Forecast
No events within 10 mi of location. View all events.

Event data courtesy eviesays.com

Aviation

Nearby Airports Flight Tracker Piloting

City	Temp.	Conditions	Updated
Santa Rosa	50 °F	Clear	3:53 AM PDT
Petaluma	46 °F	Partly Cloudy	4:15 AM PDT
Napa County	48 °F	Clear	3:54 AM PDT
Novato	50 °F	Clear	4:15 AM PDT

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Flight	To	ETA	Status
No flights were found.

Flight Tracker by FlightAware

View U.S. Airport Delays

Type	Condition
Flight Rule:	VFR (KSTS)
Wind Speed:	11.0 kts.
Wind Dir:	270° (West)
Ceiling:	Unlimited

METAR KSTS 251053Z AUTO 31011KT 10SM CLR 10/03 A2972 RMK AO2 SLP056 T01000028

View all Reports & Maps

Sports

MLB IFB NASCAR Golf More

Event	Date	Forecast
Royals vs. Orioles	7:05 PM EDT on May 25, 2012	Clear, 79 °F
Cubs vs. Pirates	7:05 PM EDT on May 25, 2012	Chance of a Thunderstorm, 81 °F

Event	Date	Forecast
Athletic vs. Barcelona	12:00 PM CEST on May 25, 2012	Scattered Clouds, High 86° F/ 30° C
Barcelona vs. Athletic	10:00 PM CEST on May 25, 2012	Scattered Clouds, High 86° F/ 30° C

Event	Date	Forecast
Coca-Cola 600	6:16 PM EDT on May 27, 2012	Chance of a Thunderstorm, 81 °F
FedEx 400 benefiting Autism Speaks	1:15 PM EDT on June 03, 2012	Average High 79° F/ 26° C
Toyota/Save Mart 350	12:19 PM PDT on June 24, 2012	Average High 81° F/ 27° C

Event	Date	Forecast
Crowne Plaza Invitational at Colonial	8:30 AM CDT on May 25, 2012	Overcast, 74 °F
Crowne Plaza Invitational at Colonial	8:30 AM CDT on May 26, 2012	Mostly Cloudy, 72 °F

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Weather Stations

Station Location	Temp.	Windchill	Dew Point	Humidity	Wind	Precipitation	Elevation	Updated	Type
Greater Calistoga, Calistoga, CA	44.6 °F	38 °F	40 °F	82%	West at 15.9 mph	- / hr	988 ft	4:19 AM PDT	Normal
Calistoga Rd at Porter Creek Rd, Santa Rosa, CA	45.5 °F	46 °F	39 °F	77%	East at 0.0 mph	0.00 in / hr	1083 ft	3:55 AM PDT	Normal
APRSWXNET Calistoga CA , Santa Rosa, CA	45 °F	45 °F	38 °F	76%	ENE at 1 mph	0.00 in / hr	1099 ft	3:46 AM PDT	MADIS
Saint Helena, CA	48.5 °F	48 °F	37 °F	64%	NW at 0.0 mph	0.00 in / hr	261 ft	4:21 AM PDT	Normal
In the middle of a 4 ac. Vineyard in the, St. Helena, CA	49.1 °F	49 °F	37 °F	63%	NE at 0.0 mph	0.00 in / hr	250 ft	4:02 AM PDT	Normal
Rincon Valley, Santa Rosa, CA	48.9 °F	48 °F	40 °F	70%	NW at 4.0 mph	0.00 in / hr	248 ft	4:21 AM PDT	Rapid Fire
Fountaingrove Village, Santa Rosa, CA	48.4 °F	48 °F	38 °F	68%	North at 0.0 mph	0.00 in / hr	555 ft	4:22 AM PDT	Normal
RAWS SANTA ROSA CA, Santa Rosa, CA	48 °F	45 °F	37 °F	65%	NW at 7 mph	0.00 in / hr	599 ft	3:29 AM PDT	MADIS
Kenwood, Santa Rosa, CA	48.0 °F	48 °F	38 °F	69%	WNW at 1.0 mph	0.00 in / hr	415 ft	4:20 AM PDT	Normal
SRJC-DP, Santa Rosa, CA	52.5 °F	-	37 °F	56%	NNE at 0.9 mph	0.00 in / hr	187 ft	4:21 AM PDT	Normal
Annadel Heights, Santa Rosa, CA	51.4 °F	-	35 °F	53%	WNW at 3.6 mph	0.00 in / hr	340 ft	4:22 AM PDT	Rapid Fire
Montgomery Village, Santa Rosa, CA	49.5 °F	50 °F	36 °F	59%	WSW at 3.0 mph	0.00 in / hr	196 ft	4:22 AM PDT	Rapid Fire
Northeast, Santa Rosa, CA	50.5 °F	-	37 °F	60%	NW at 2.0 mph	0.00 in / hr	0 ft	4:22 AM PDT	Normal
Fairway View Estates, Santa Rosa, CA	49.7 °F	50 °F	37 °F	62%	North at 0.0 mph	0.00 in / hr	320 ft	4:22 AM PDT	Rapid Fire
MesoWest Santa Rosa , Santa Rosa, CA	52 °F	-	-	-	WNW at 11 mph	0.00 in / hr	161 ft	1:00 AM PDT	MADIS
Windsor Fire, Windsor, CA	51.0 °F	-	37 °F	59%	NW at 11.0 mph	0.00 in / hr	128 ft	4:20 AM PDT	Normal
Ragle Ranch, Santa Rosa, CA	50.6 °F	-	39 °F	65%	NE at 2.0 mph	0.00 in / hr	204 ft	4:15 AM PDT	Normal
SnomaHoma Santa Rosa, Santa Rosa, CA	51.4 °F	-	36 °F	56%	SSW at 0.0 mph	0.00 in / hr	134 ft	4:22 AM PDT	Rapid Fire
The Woods, Santa Rosa, CA	51.3 °F	-	39 °F	62%	North at 0.0 mph	0.00 in / hr	0 ft	4:10 AM PDT	Rapid Fire
Santa Rosa,Ca., Santa Rosa, CA	51.1 °F	-	38 °F	60%	WNW at 3.5 mph	0.00 in / hr	105 ft	4:22 AM PDT	Rapid Fire
APRSWXNET Santa Rosa CA , Santa Rosa, CA	50 °F	-	39 °F	65%	North at 1 mph	0.00 in / hr	97 ft	3:42 AM PDT	MADIS
Eastside Road, Healdsburg, CA	51.1 °F	-	40 °F	66%	WNW at 1.0 mph	0.00 in / hr	92 ft	3:55 AM PDT	Normal
Bellevue Ranch, Santa Rosa, CA	50.8 °F	-	39 °F	64%	WNW at 0.0 mph	0.00 in / hr	0 ft	4:22 AM PDT	Rapid Fire
Santa Rosa Corporate Center, Santa Rosa, CA	50.6 °F	-	39 °F	64%	WNW at 3.0 mph	0.00 in / hr	122 ft	4:20 AM PDT	Normal
Lytton, Geyserville, CA	48.1 °F	45 °F	38 °F	68%	West at 7.1 mph	0.00 in / hr	174 ft	4:22 AM PDT	Rapid Fire
N Healdsburg, Healdsburg, CA	48.3 °F	48 °F	39 °F	70%	NNE at 0.0 mph	0.00 in / hr	212 ft	4:20 AM PDT	Normal
Yountville Deli (Washington St), Yountville, CA	47.2 °F	46 °F	39 °F	72%	North at 3.5 mph	0.00 in / hr	98 ft	4:22 AM PDT	Rapid Fire
MAP HEALDSBURG CA , Healdsburg, CA	49 °F	49 °F	39 °F	68%	North at -	0.00 in / hr	203 ft	3:00 AM PDT	MADIS
Laguna Road, Santa Rosa, CA	50.0 °F	47 °F	38 °F	63%	NNE at 7.0 mph	- / hr	0 ft	4:11 AM PDT	Normal
NNW Healdsburg, Healdsburg, CA	48.5 °F	48 °F	40 °F	71%	SSE at 1.0 mph	0.00 in / hr	311 ft	4:22 AM PDT	Rapid Fire
HADS ANGWIN PACIFIC UNION COLLEGE AT CA, Angwin, CA	40 °F	40 °F	-	-	North at -	0.00 in / hr	1714 ft	3:00 AM PDT	MADIS
Edgewood, Angwin, CA	41.9 °F	42 °F	35 °F	75%	North at 0.0 mph	0.00 in / hr	1766 ft	4:22 AM PDT	Rapid Fire
Las Posadas, Angwin, CA	41.9 °F	39 °F	36 °F	79%	NW at 5.0 mph	0.00 in / hr	1706 ft	4:22 AM PDT	Rapid Fire
Jerusalem Grade, Lower Lake, CA	42.3 °F	39 °F	35 °F	74%	NE at 6.0 mph	0.00 in / hr	1846 ft	3:41 AM PDT	Normal
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Special Statement

Mobile & Email Alerts Statement as of 10:01 PM PDT on May 24, 2012

... Much cooler with a chance of showers and isolated thunderstorms Friday...

An unseasonably cold weather system will rapidly approach the Bay
area overnight... arriving by Friday morning. Rain showers
currently associated with this system are being reported in
southern Oregon with radars west of Cape Mendocino starting to
pick up returns. The main impact of the system will be cool
temperatures and a continuation of the breezy to locally windy
weather we've been having the last few days.

Skies will start out sunny but with cold morning temperatures in
the upper 30s and 40s for many portions of the Bay area. By
mid-morning the core of the system will pass overhead with very
unstable air aloft. This will allow for cumulus cloud development
over the hills of the Bay area. Rain showers will be possible
through the afternoon hours... especially over the hills but its
possible that any showers could drift over the valleys. Anybody
with outdoor interests such as camping our hiking on Friday should
be prepared for unseasonably cool... possibly wet and windy weather.

Finally... the latest computer model projections have been
consistent in showing an above average chance of thunderstorms
over the far eastern portions of our district... roughly running
southward form the hills of Napa County through the far East Bay
valleys and continuing southward over the higher and mostly
unpopulated areas of Santa Clara and San Benito counties. These
far eastern counties of the Bay area will have the best chance for
seeing thunderstorms roughly from 2 PM to 7 PM Friday afternoon
and evening. Freezing levels will drop to around 6000 feet so ice
pellets and small hail will be possible in some of the heavier
cells along with dangerous cloud to ground lightning.

Any hail that falls on roads can quickly lead to traffic
accidents... especially on the get away Friday of a three day
Holiday weekend. The National Weather Service and California
Highway patrol urge motorists to slow down and stay abreast of the
latest forecast information before heading out this Holiday
weekend. As a reminder... folks heading to the Sierra should expect
winter weather conditions Friday night into Saturday with snow
over the trans-Sierra passes. There are currently snow advisories
in effect for that West Slope of the Sierra until 6 PM Friday.

Http://weather.Gov/sanfrancisco

R walbrun