Sterling, VA

8:04 AM EDT on May 21, 2013 (GMT -0400)
Elev: 289 ft
Lon: 77.4° W
Lat: 39.0° N
Source
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Global: Violent tornado devastates Moore, Oklahoma
News
At Least 51 Dead, Including 20 Children
May 21, 2013
The search and rescue efforts are ongoing in Moore, Okla. after a massive tornado levelled the town and local schools.
At Least 20 Children Dead at Okla. School
May 21, 2013
Several children have been pulled out of the rubble alive at a school in an Oklahoma City suburb.
'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.
In Tornado's Wake, Worried Parents Seek Out Kids
May 21, 2013
Parents hope to be reunited with their missing children.
Tornado Took Similar Path to 1999 F5
May 21, 2013
Moore, Oklahoma is no stranger to devastating tornadoes.
Oklahoma Tornado: How to Help
May 20, 2013
The Salvation Army says it is activating disaster response teams and mobile feeding units to help residents and rescuers in Moore.
Moore, Okla. Tornado Timeline
May 21, 2013
On May 20, 2013, a large deadly tornado ripped through the Oklahoma City area. Click to read the timeline of the tornado event
Obama Declares Major Disaster in Oklahoma
May 21, 2013
President Barack Obama has declared a major disaster in Oklahoma as the state recovers from a massive tornado that ripped through the Oklahoma City suburbs Monday, killing dozens and flattening entire neighborhoods.
Photos, Social Media Capture Terror of Okla. Tornadoes
May 20, 2013
Catastrophic tornadoes developed in Oklahoma on Monday. Here are photos and social media reports.
Huge Rock Crashes Into Moon, Sparks Giant Explosion
May 20, 2013
The moon has a new hole on its surface thanks to a boulder that slammed into it in March, creating the biggest explosion scientists have seen on the moon since they started monitoring it.
Deadly Rainstorms Kill 55 in Southern China
May 20, 2013
Chinese authorities say rainstorms that battered southern China this week have killed 55 people and left 14 others missing.
Photos: Deadly Tornado Outbreak Strikes Plains
May 20, 2013
A tornado outbreak struck the Plains states on May 19, 2013, leaving widespread damage in its wake.
Recap: Tornadoes Rake Oklahoma, Kansas, Iowa
May 20, 2013
The weather imagery, video and recap from tornadoes in the Plains on May 19, 2013.
Amazing Nature, Captured
May 20, 2013
These stunning images of nature captured across the globe will change the way you view our world.
Photos: Tornado Devastation in Plains
May 20, 2013
Photos and social media reports of severe weather damage over the weekend in Oklahoma, Iowa and Kansas.
Tornado Hits South of Oklahoma City
May 20, 2013
Continuing coverage of destructive severe weather.
Tornado Hits OKC Suburb, Kicking Up Debris
May 19, 2013
A tornado kicked up debris in an Oklahoma City suburb and threatened a number of tourist attractions on historic Route 66 but there were no immediate reports of injuries or major damage.
Tornado Touches Down in Wichita
May 19, 2013
State emergency officials are monitoring a tornado in the Wichita area.
BREAKING: Oklahoma Tornado Devastation
May 20, 2013
The latest breaking news from the scene, tornado warnings, photos and more.
Mice Return From a Month in Space
May 19, 2013
Mice and other critters return from a month long stay in space.
More News Articles
Weather Summary
Kari Kiefer
Weather Underground Forecast for Tuesday, May 21, 2013.

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

The nearly stationary low over the Northern Plains will gradually weaken as it shifts eastward into the Midwest on Tuesday, while the system's associated cold front trails 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 will set the stage for multiple clusters of thunderstorms to develop from the Midwest into the Ozarks and the Southern Plains. Portions of northeastern Texas, extreme southeastern Oklahoma, central and southern Arkansas, and northwestern Louisiana are at moderate risk of severe thunderstorm activity as environmental conditions remain favorable for tornadoes, damaging wind gusts, and very large hail. Areas surrounding this moderate risk region from the parts of central and eastern Texas into the Upper Great Lakes are at slight risk of severe thunderstorm development with hail, damaging wind gusts, and isolated tornadoes.

Meanwhile, areas of heavy rain and widely scattered showers will continue 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 Northeast. Continued precipitation in already saturated areas of the Northern Plains and Upper Midwest will maintain flood concerns from parts of North Dakota into northern Wisconsin.

Elsewhere, scattered showers and thunderstorms are expected to persist in the Mid-Atlantic and southeastern corner of the nation.
Weather Underground Forecast for Tuesday, May 21, 2013.

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

The nearly stationary low over the Northern Plains will gradually weaken as it shifts eastward into the Midwest on Tuesday, while the system's associated cold front trails 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 will set the stage for multiple clusters of thunderstorms to develop from the Midwest into the Ozarks and the Southern Plains. Portions of northeastern Texas, extreme southeastern Oklahoma, central and southern Arkansas, and northwestern Louisiana are at moderate risk of severe thunderstorm activity as environmental conditions remain favorable for tornadoes, damaging wind gusts, and very large hail. Areas surrounding this moderate risk region from the parts of central and eastern Texas into the Upper Great Lakes are at slight risk of severe thunderstorm development with hail, damaging wind gusts, and isolated tornadoes.

Meanwhile, areas of heavy rain and widely scattered showers will continue 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 Northeast. Continued precipitation in already saturated areas of the Northern Plains and Upper Midwest will maintain flood concerns from parts of North Dakota into northern Wisconsin.

Elsewhere, scattered showers and thunderstorms are expected to persist in the Mid-Atlantic and southeastern corner of the nation.
More News Articles

Sterling Weather at a Glance

Updated 7:24 AM EDT
Elevation
339 ft
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Now
Overcast
Overcast
Temperature
68 °F
Feels Like 68 °F
Wind(mph)
6
Sunrise / Set
5:51 AM
8:21 PM
Moon
Waxing Gibbous
Today
Chance of a Thunderstorm 88 °F
Chance of a Thunderstorm
20% chance of precipitation
Tonight
Chance of a Thunderstorm 68 °F
Chance of T-storms
30% chance of precipitation
Tomorrow
Chance of a Thunderstorm 88 | 70 °F
Chance of T-storms
30% chance of precipitation
Thursday
Chance of a Thunderstorm 79 | 59 °F
Chance of T-storms
50% chance of precipitation
Friday
Partly Cloudy 72 | 52 °F
Partly Cloudy
Saturday
Clear 72 | 48 °F
Clear
Today is forecast to be Warmer than yesterday.
Conditions
Pressure
29.99 in
Visibility
2.5 miles
Clouds
Scattered Clouds 500 ft
Overcast 1000 ft
Moisture
Humidity
90%
Rainfall
0.01 in
Snow Depth
Not available.
METAR
METAR KIAD 211152Z 17004KT 2 1/2SM BR SCT005 OVC010 21/19 A3000 RMK AO2 SFC VIS 4 SLP156 T02060189 10206 20194 51010
Don't speak METAR? Read our FAQ.
Weather Radio
Launch Weather Radio
Temperature
Temperature
68 °F
73,70,69,69,68,68,68,67,66,67,68,68,68
Dew Point
65 °F
Wind
Speed / Dir
6 mph from South
Wind Gust
11.0 mph
Health
UV
1 out of 16
Pollen
8.10 out of 12
Pollen Forecast
Ozone
Good
PM2.5
Good
Flu Activity
Sporadic
View Flu Map
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Source: BestForecast
Descriptive Forecast
Tuesday
partlycloudy Partly cloudy with a chance of a thunderstorm and a chance of rain in the afternoon. Fog early. High of 88F. Winds from the SSW at 5 to 10 mph. Chance of rain 20%.
Tuesday Night
nt_chancetstorms Partly cloudy with a chance of a thunderstorm and a chance of rain. Low of 68F. Winds from the SSW at 5 to 10 mph. Chance of rain 30%.
Wednesday
chancetstorms Partly cloudy with a chance of a thunderstorm and a chance of rain in the afternoon. High of 88F. Winds from the SSW at 5 to 15 mph. Chance of rain 30%.
Wednesday Night
nt_chancetstorms Overcast with a chance of a thunderstorm and a chance of rain. Low of 70F. Winds from the SSW at 10 to 15 mph. Chance of rain 50%.
Thursday
chancetstorms Mostly cloudy with a chance of a thunderstorm and a chance of rain. High of 79F. Winds from the SW at 5 to 10 mph. Chance of rain 50%.
Thursday Night
nt_chancetstorms Partly cloudy with a chance of a thunderstorm and rain. Low of 59F. Winds from the WSW at 5 to 10 mph. Chance of rain 30%.
Friday
partlycloudy Clear. High of 72F. Breezy. Winds from the WNW at 10 to 20 mph.
Friday Night
nt_clear Clear. Low of 52F. Breezy. Winds from the NW at 15 to 20 mph.
Saturday
clear Partly cloudy. High of 72F. Breezy. Winds from the NNW at 15 to 20 mph.
Saturday Night
nt_mostlycloudy Overcast. Low of 48F. Winds from the NW at 5 to 15 mph.
Sunday
mostlycloudy Overcast. High of 70F. Winds from the NW at 5 to 10 mph.
Sunday Night
nt_cloudy Overcast. Low of 50F. Winds less than 5 mph.
Monday
cloudy Overcast. High of 72F. Winds less than 5 mph.
Monday Night
nt_partlycloudy Clear. Fog overnight. Low of 50F. Winds less than 5 mph.
Tuesday
chancerain Partly cloudy with a chance of rain. Fog early. High of 73F. Winds from the SSE at 5 to 10 mph. Chance of rain 40%.
Tuesday Night
nt_partlycloudy Partly cloudy. Fog overnight. Low of 61F. Winds from the SSE at 5 to 10 mph.
Wednesday
partlycloudy Partly cloudy. High of 79F. Winds less than 5 mph.
Wednesday Night
nt_partlycloudy Partly cloudy. Fog overnight. Low of 63F. Winds less than 5 mph.
Thursday
partlycloudy Partly cloudy. High of 82F. Winds less than 5 mph.
Thursday Night
nt_partlycloudy Partly cloudy. Low of 64F. Winds less than 5 mph.
Friday
partlycloudy Partly cloudy. High of 82F. Winds less than 5 mph.
Friday Night
nt_partlycloudy Clear. Low of 64F. Winds less than 5 mph.
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Weather Forecast for Sterling VA

View Calendar 10-Day Forecast for station KVAASHBU18

Tuesday, 21
Chance of a Thunderstorm
88 | 68 °F
Chance of a Thunderstorm
Chance of
Precipitation
20%
Wednesday, 22
Chance of a Thunderstorm
88 | 70 °F
Chance of T-storms
Chance of
Precipitation
30%
Thursday, 23
Chance of a Thunderstorm
79 | 59 °F
Chance of T-storms
Chance of
Precipitation
50%
Friday, 24
Partly Cloudy
72 | 52 °F
Partly Cloudy
Chance of
Precipitation
0%
Saturday, 25
Clear
72 | 48 °F
Clear
Chance of
Precipitation
0%
Sunday, 26
Mostly Cloudy
70 | 50 °F
Mostly Cloudy
Chance of
Precipitation
0%
Monday, 27
Overcast
72 | 50 °F
Overcast
Chance of
Precipitation
0%
Tuesday, 28
Chance of Rain
73 | 61 °F
Chance of Rain
Chance of
Precipitation
40%
Wednesday, 29
Partly Cloudy
79 | 63 °F
Partly Cloudy
Chance of
Precipitation
0%
Thursday, 30
Partly Cloudy
82 | 64 °F
Partly Cloudy
Chance of
Precipitation
0%
Source: BestForecast at 4:09 AM EDT on May 21, 2013
Descriptive Forecast
Tuesday
partlycloudy Partly cloudy with a chance of a thunderstorm and a chance of rain in the afternoon. Fog early. High of 88F. Winds from the SSW at 5 to 10 mph. Chance of rain 20%.
Tuesday Night
nt_chancetstorms Partly cloudy with a chance of a thunderstorm and a chance of rain. Low of 68F. Winds from the SSW at 5 to 10 mph. Chance of rain 30%.
Hourly Forecast 6AM 12 Noon 6PM 12 Midnight
Temp. | Dew Point 66 | 65 83 | 67 85 | 68 73 | 67
Wind 2 mph South 5 mph SSW 9 mph SSW 8 mph SSW
Humidity 95% 58% 54% 80%
Chance of Precip. 10% 10% 20% 30%
Cloud Cover 64% 58% 56% 57%
Conditions Fog Partly Cloudy Chance of a Thunderstorm Chance of a Thunderstorm
Sunrise & Sunset
5:51 AM
8:21 PM
The quality of the forecasted high temperature for this day is good. MaxT RMSE [1.96], Average RMSE [2.35]
The National Weather Service forecast quality is good. MaxT RMSE [1.82], Average RMSE [1.75] : Use NWS
Source: BestForecast at 4:09 AM EDT on May 21, 2013
Descriptive Forecast
Wednesday
chancetstorms Partly cloudy with a chance of a thunderstorm and a chance of rain in the afternoon. High of 88F. Winds from the SSW at 5 to 15 mph. Chance of rain 30%.
Wednesday Night
nt_chancetstorms Overcast with a chance of a thunderstorm and a chance of rain. Low of 70F. Winds from the SSW at 10 to 15 mph. Chance of rain 50%.
Hourly Forecast 6AM 12 Noon 6PM 12 Midnight
Temp. | Dew Point 71 | 65 82 | 66 82 | 66 75 | 65
Wind 6 mph SSW 10 mph SSW 11 mph South 10 mph SSW
Humidity 83% 60% 59% 73%
Chance of Precip. 10% 10% 30% 40%
Cloud Cover 68% 68% 70% 92%
Conditions Mostly Cloudy Mostly Cloudy Chance of a Thunderstorm Chance of a Thunderstorm
Sunrise & Sunset
5:51 AM
8:22 PM
The quality of the forecasted high temperature for this day is good. MaxT RMSE [2.30], Average RMSE [2.35]
The National Weather Service forecast quality is good. MaxT RMSE [2.42], Average RMSE [2.03] : Use NWS
Source: BestForecast at 4:09 AM EDT on May 21, 2013
Descriptive Forecast
Thursday
chancetstorms Mostly cloudy with a chance of a thunderstorm and a chance of rain. High of 79F. Winds from the SW at 5 to 10 mph. Chance of rain 50%.
Thursday Night
nt_chancetstorms Partly cloudy with a chance of a thunderstorm and rain. Low of 59F. Winds from the WSW at 5 to 10 mph. Chance of rain 30%.
Hourly Forecast 6AM 12 Noon 6PM 12 Midnight
Temp. | Dew Point 72 | 64 76 | 64 76 | 63 68 | 63
Wind 7 mph SSW 8 mph SW 6 mph SW 6 mph SW
Humidity 74% 64% 63% 84%
Chance of Precip. 40% 50% 50% 30%
Cloud Cover 71% 83% 68% 40%
Conditions Chance of a Thunderstorm Chance of a Thunderstorm Chance of a Thunderstorm Chance of a Thunderstorm
Sunrise & Sunset
5:50 AM
8:22 PM
The quality of the forecasted high temperature for this day is good. MaxT RMSE [2.50], Average RMSE [2.12]
The National Weather Service forecast quality is fair. MaxT RMSE [2.63], Average RMSE [2.56] : Use NWS
Source: BestForecast at 4:09 AM EDT on May 21, 2013
Descriptive Forecast
Friday
partlycloudy Clear. High of 72F. Breezy. Winds from the WNW at 10 to 20 mph.
Friday Night
nt_clear Clear. Low of 52F. Breezy. Winds from the NW at 15 to 20 mph.
Hourly Forecast 6AM 12 Noon 6PM 12 Midnight
Temp. | Dew Point 64 | 58 65 | 53 69 | 48 57 | 44
Wind 7 mph WNW 15 mph WNW 17 mph NW 14 mph NW
Humidity 79% 67% 46% 58%
Chance of Precip. 10% 10% 0% 10%
Cloud Cover 60% 9% 0% 0%
Conditions Partly Cloudy Clear Clear Clear
Sunrise & Sunset
5:49 AM
8:23 PM
The quality of the forecasted high temperature for this day is fair. MaxT RMSE [2.67], Average RMSE [2.83]
The National Weather Service forecast quality is fair. MaxT RMSE [3.17], Average RMSE [2.92] : Use NWS
Source: BestForecast at 4:09 AM EDT on May 21, 2013
Descriptive Forecast
Saturday
clear Partly cloudy. High of 72F. Breezy. Winds from the NNW at 15 to 20 mph.
Saturday Night
nt_mostlycloudy Overcast. Low of 48F. Winds from the NW at 5 to 15 mph.
Hourly Forecast 6AM 12 Noon 6PM 12 Midnight
Temp. | Dew Point 54 | 37 67 | 34 70 | 38 56 | 36
Wind 16 mph NW 17 mph NNW 13 mph NNW 9 mph NNW
Humidity 50% 28% 30% 44%
Chance of Precip. 0% 0% 0% 0%
Cloud Cover 13% 0% 45% 97%
Conditions Clear Clear Partly Cloudy Overcast
Sunrise & Sunset
5:49 AM
8:24 PM
The quality of the forecasted high temperature for this day is poor. MaxT RMSE [3.78], Average RMSE [2.21]
The National Weather Service forecast quality is poor. MaxT RMSE [3.74], Average RMSE [3.24] : Use NWS
Source: BestForecast at 4:09 AM EDT on May 21, 2013
Descriptive Forecast
Sunday
mostlycloudy Overcast. High of 70F. Winds from the NW at 5 to 10 mph.
Sunday Night
nt_cloudy Overcast. Low of 50F. Winds less than 5 mph.
Hourly Forecast 6AM 12 Noon 6PM 12 Midnight
Temp. | Dew Point 50 | 35 65 | 37 66 | 38 60 | 38
Wind 6 mph NW 8 mph NNW 5 mph NW 2 mph NW
Humidity 54% 34% 37% 45%
Chance of Precip. 0% 0% 0% 0%
Cloud Cover 95% 92% 94% 100%
Conditions Overcast Overcast Overcast Overcast
Sunrise & Sunset
5:48 AM
8:25 PM
The quality of the forecasted high temperature for this day is poor. MaxT RMSE [4.45], Average RMSE [2.98]
The National Weather Service forecast quality is poor. MaxT RMSE [3.79], Average RMSE [3.38] : Use NWS
Source: BestForecast at 4:09 AM EDT on May 21, 2013
Descriptive Forecast
Monday
cloudy Overcast. High of 72F. Winds less than 5 mph.
Monday Night
nt_partlycloudy Clear. Fog overnight. Low of 50F. Winds less than 5 mph.
Hourly Forecast 6AM 12 Noon 6PM 12 Midnight
Temp. | Dew Point 50 | 38 62 | 44 66 | 52 58 | 53
Wind 5 mph NNE 5 mph East 5 mph SE 5 mph SSE
Humidity 64% 51% 60% 81%
Chance of Precip. 0% 0% 0% 0%
Cloud Cover 100% 100% 96% 0%
Conditions Overcast Overcast Overcast Clear
Sunrise & Sunset
5:48 AM
8:26 PM
The quality of the forecasted high temperature for this day is poor. MaxT RMSE [5.07], Average RMSE [2.98]
The National Weather Service forecast quality is fair. MaxT RMSE [3.31], Average RMSE [3.54] : Use NWS
Source: BestForecast at 4:09 AM EDT on May 21, 2013
Descriptive Forecast
Tuesday
chancerain Partly cloudy with a chance of rain. Fog early. High of 73F. Winds from the SSE at 5 to 10 mph. Chance of rain 40%.
Tuesday Night
nt_partlycloudy Partly cloudy. Fog overnight. Low of 61F. Winds from the SSE at 5 to 10 mph.
Hourly Forecast 6AM 12 Noon 6PM 12 Midnight
Temp. | Dew Point 54 | 52 68 | 60 63 | 62 63 | 63
Wind 3 mph SSE 7 mph SSE 8 mph SSE 6 mph SSE
Humidity 94% 75% 95% 98%
Chance of Precip. 20% 10% 10% 10%
Cloud Cover 8% 46% 26% 36%
Conditions Chance of Rain Partly Cloudy Fog Fog
Sunrise & Sunset
5:47 AM
8:26 PM
The quality of the forecasted high temperature for this day is poor. MaxT RMSE [4.89], Average RMSE [4.35]
Source: BestForecast at 4:09 AM EDT on May 21, 2013
Descriptive Forecast
Wednesday
partlycloudy Partly cloudy. High of 79F. Winds less than 5 mph.
Wednesday Night
nt_partlycloudy Partly cloudy. Fog overnight. Low of 63F. Winds less than 5 mph.
Hourly Forecast 6AM 12 Noon 6PM 12 Midnight
Temp. | Dew Point 63 | 62 74 | 64 71 | 67 65 | 65
Wind 4 mph South 3 mph South 4 mph SSE 3 mph SSE
Humidity 96% 72% 83% 100%
Chance of Precip. 0% 0% 0% 0%
Cloud Cover 58% 66% 58% 51%
Conditions Partly Cloudy Mostly Cloudy Partly Cloudy Fog
Sunrise & Sunset
5:47 AM
8:27 PM
The quality of the forecasted high temperature for this day is poor. MaxT RMSE [5.42], Average RMSE [4.74]
Source: BestForecast at 4:09 AM EDT on May 21, 2013
Descriptive Forecast
Thursday
partlycloudy Partly cloudy. High of 82F. Winds less than 5 mph.
Thursday Night
nt_partlycloudy Partly cloudy. Low of 64F. Winds less than 5 mph.
Hourly Forecast 6AM 12 Noon 6PM 12 Midnight
Temp. | Dew Point 65 | 64 76 | 65 78 | 66 67 | 65
Wind 2 mph South 3 mph South 4 mph South 3 mph South
Humidity 97% 66% 68% 96%
Chance of Precip. 0% 0% 0% 0%
Cloud Cover 45% 41% 40% 35%
Conditions Fog Partly Cloudy Partly Cloudy Partly Cloudy
Sunrise & Sunset
5:46 AM
8:28 PM
Source: BestForecast at 4:09 AM EDT on May 21, 2013
Descriptive Forecast
Friday
partlycloudy Partly cloudy. High of 82F. Winds less than 5 mph.
Friday Night
nt_partlycloudy Clear. Low of 64F. Winds less than 5 mph.
Hourly Forecast 6AM 12 Noon 6PM 12 Midnight
Temp. | Dew Point 69 | 64 79 | 66 78 | 67 70 | 67
Wind 2 mph SSW 2 mph SSW 3 mph South 2 mph South
Humidity 89% 64% 69% 88%
Chance of Precip. 0% 0% 0% 0%
Cloud Cover 26% 31% 51% %
Conditions Partly Cloudy Partly Cloudy Partly Cloudy Clear
Sunrise & Sunset
Sun does not rise
Scientific Forecaster Discussion — MOS Weather Graph
Nearby
History & Almanac
May 21, 2013 Max Temp Min Temp
Normal (KIAD) 76 °F 53 °F
Record (KIAD) 92 °F (1996) 33 °F (1992)
Yesterday 81 °F 66 °F
Yesterday's Cooling Degree Days: 9
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 AQ Index Pollutant
Yesterday Good
PM10
Yesterday Good
OZONE
Current Good
PM2.5
Current Good
OZONE
Tuesday Moderate
PM2.5
Tuesday Good
OZONE
Wednesday Good
OZONE
Wednesday Good
PM2.5
Thursday Good
OZONE
Thursday Good
PM2.5
Friday Good
OZONE
Friday Good
PM2.5
Coastal Water Temperatures
Place Temperature
Washington, DC 66.9 °F
Baltimore, MD 66.9 °F
Solomons Island, MD 66.9 °F
Marine Forecast
Astronomy
May. 21, 2013 Rise Set
Actual Time 5:51 AM EDT 8:21 PM EDT
Civil Twilight 5:21 AM EDT 8:51 PM EDT
Nautical Twilight 4:43 AM EDT 9:29 PM EDT
Astronomical Twilight 4:01 AM EDT 10:12 PM EDT
Moon 4:34 PM EDT 3:16 AM EDT
Length Of Visible Light 15h 30m
Length of Day
14h 29m
Tomorrow will be 1m 32s longer.
Waxing Gibbous, 82% of the Moon is Illuminated
Today
Waxing Gibbous
May 25
Full
May 31
Last Quarter
Jun 8
New
Jun 16
First Quarter
Visit Astronomy
Today's Extremes
State Highs State Lows
73 °F
Melfa
73 °F
Newport News
71 °F
Suffolk
71 °F
Williamsburg
71 °F
Oceana NAS
57 °F
Dublin
57 °F
Marion
59 °F
Abingdon
59 °F
Jonesville
60 °F
Wise
Record Extremes
Snow Depth
Station Depth Elevation
No new snow has been reported.
Snow Depth Reports — Snow Depth Map
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Travel Planning
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Aviation
City Temp. Conditions Updated
Dulles Airport 69 °F Overcast 7:52 AM EDT
Leesburg 70 °F Overcast 7:55 AM EDT
Gaithersburg 68 °F Overcast 7:55 AM EDT
Manassas 70 °F Overcast 7:45 AM EDT
View all Aviation Tools
Flight To ETA Status
POE719
Toronto, Ontario 		KIAD 07:59AM On Time
ASQ4527
Newark, NJ 		KIAD 08:09AM On Time
ETH500
Rome 		KIAD 08:11AM On Time
ASQ6161
Toronto, Ontario 		KIAD 08:16AM On Time
Flight Tracker by FlightAware FlightAware
View U.S. Airport Delays
Type Condition
Flight Rule: IFR (KIAD)
Wind Speed: 4.0 kts.
Wind Dir: 181° (South)
Ceiling: 1000 ft

METAR KIAD 211152Z 17004KT 2 1/2SM BR SCT005 OVC010 21/19 A3000 RMK AO2 SFC VIS 4 SLP156 T02060189 10206 20194 51010

View all Reports & Maps
Nearby Events
Event Date Forecast
Jason Masi 9:00 PM EDT
2013-04-16		 Chance of Rain, 69°F
Acoustic Tuesday 9:00 PM EDT
2013-04-16		 Chance of Rain, 69°F
Austin Ellis Live 9:00 PM EDT
2013-04-19		 Chance of Rain, 76°F
2013 Ride to Provide 8:00 AM EDT
2013-04-20		 Overcast, 48°F
2013 Ride to Provide Volunteer 7:00 AM EDT
2013-04-20		 Chance of Rain, 50°F
NOVA Roller Derby Presents - NOVA Skate Troopers vs. Atlantic Coast Roller Girls 4:00 PM EDT
2013-04-20		 Partly Cloudy, 66°F
Event data courtesy eviesays.com
Sports
Event Date Forecast
Tigers vs. Indians 7:05 PM EDT on May 21, 2013 Chance of a Thunderstorm, 77 °F
Yankees vs. Orioles 7:05 PM EDT on May 21, 2013 Chance of a Thunderstorm, 81 °F
Phillies vs. Nationals 7:05 PM EDT on May 24, 2013 Clear, 68 °F
Phillies vs. Nationals 7:15 PM EDT on May 25, 2013 Partly Cloudy, 65 °F
Event Date Forecast
Livorno vs. Brescia 6:30 PM CEST on May 22, 2013 Clear, High 71° F/ 22° C
Empoli vs. Novara 8:45 PM CEST on May 22, 2013 Clear, High 69° F/ 21° C
Portland vs. D.C. 7:00 PM EDT on May 25, 2013 Partly Cloudy, 65 °F
Toronto FC vs. D.C. 7:00 PM EDT on June 15, 2013 Average High 85° F/ 29° C
Event Date Forecast
Coca-Cola 600 6:16 PM EDT on May 26, 2013 Chance of Rain, 70 °F
FedEx 400 benefiting Autism Speaks 1:15 PM EDT on June 02, 2013 Average High 81° F/ 27° C
Event Date Forecast
Crowne Plaza Invitational at Colonial 8:30 AM CDT on May 23, 2013 Partly Cloudy, 68 °F
Crowne Plaza Invitational at Colonial 8:30 AM CDT on May 24, 2013 Partly Cloudy, 68 °F
AT&T National 8:30 AM EDT on June 27, 2013 Average High 87° F/ 30° C
AT&T National 8:30 AM EDT on June 28, 2013 Average High 86° F/ 29° C
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Weather Stations
Station Location Temp. Dew Point Humidity Wind Precipitation Elevation Updated Type Website
VADOT Site_G, Herndon, VA 68 °F 65 °F 90% South  at  6 mph 0.00 in / hr 339 ft 7:24 AM EDT MADIS
Ashburn Village, Ashburn, VA 69.3 °F 67 °F 93% WSW  at  0.0 mph - / hr 320 ft 7:56 AM EDT Normal  
Falls Brook, Herndon, VA 68.7 °F 67 °F 94% SSE  at  0.0 mph 0.00 in / hr 280 ft 7:54 AM EDT Normal  
Weatherscience.net, Potomac Falls, VA 70.1 °F 67 °F 91% NNW  at  0.0 mph 0.00 in / hr 276 ft 8:03 AM EDT Rapid Fire
Ashburn Village 1, Ashburn, VA 69.7 °F 67 °F 91% SSW  at  4.0 mph 0.00 in / hr 279 ft 8:03 AM EDT Rapid Fire  
NonFedAWOS WASHINGTON DULLES , Dulles, VA 70 °F 66 °F 88% South  at  5 mph 0.00 in / hr 1023 ft 7:44 AM EDT MADIS
Shaker Woods, Herndon, VA 69.8 °F 68 °F 93% SE  at  2.2 mph 0.00 in / hr 387 ft 8:03 AM EDT Rapid Fire  
APRSWXNET Great Falls VA , Sterling, VA 67 °F 66 °F 97% SSW  at  0 mph 0.00 in / hr 321 ft 7:43 AM EDT MADIS
APRSWXNET Reston VA , Herndon, VA 68 °F 66 °F 93% SSW  at  0 mph 0.00 in / hr 454 ft 7:48 AM EDT MADIS
Belmont Country Club, Ashburn, VA 68.5 °F 66 °F 93% South  at  0.0 mph 0.00 in / hr 302 ft 8:03 AM EDT Rapid Fire
Brambleton, Brambleton, VA 69.2 °F 68 °F 95% NNW  at  0.0 mph 0.00 in / hr 310 ft 8:02 AM EDT Rapid Fire  
Brambleton, Ashburn, VA 69.3 °F 69 °F 98% WNW  at  1.1 mph - / hr 358 ft 8:00 AM EDT Normal  
Golf Course Island, Reston, VA 68.9 °F 66 °F 91% South  at  0.0 mph 0.00 in / hr 390 ft 8:03 AM EDT Rapid Fire  
Chantilly Highlands, Herndon, VA 70.0 °F 69 °F 98% South  at  1.6 mph 0.00 in / hr 340 ft 8:03 AM EDT Rapid Fire  
Great Falls VA, Great Falls, VA 68.4 °F 67 °F 95% South  at  2.0 mph 0.00 in / hr 380 ft 8:00 AM EDT Normal
APRSWXNET Great Falls VA , Great Falls, VA 67 °F 66 °F 96% SW  at  1 mph 0.00 in / hr 380 ft 7:49 AM EDT MADIS
Colvin Run at Hunter Mill Rd (One Lane B, Vienna, VA 68.2 °F 66 °F 93% SW  at  0.0 mph 0.00 in / hr 295 ft 8:00 AM EDT Normal  
APRSWXNET Reston VA , Herndon, VA 68 °F 67 °F 95% SW  at  0 mph 0.00 in / hr 400 ft 7:37 AM EDT MADIS
Cedar Cove Cluster, Reston, VA 69.1 °F 66 °F 91% South  at  0.0 mph 0.00 in / hr 350 ft 8:03 AM EDT Rapid Fire  
Lake Fairfax, Vienna, VA 68.9 °F 67 °F 93% SE  at  1.0 mph 0.00 in / hr 275 ft 8:03 AM EDT Rapid Fire
Ridings at Blue Springs, Chantilly, VA 68.7 °F 67 °F 95% South  at  0.0 mph 0.00 in / hr 303 ft 8:01 AM EDT Normal
Stone Ridge, Stone Ridge, VA 71.1 °F 68 °F 91% West  at  0.0 mph 0.00 in / hr 365 ft 8:03 AM EDT Rapid Fire  
Folkstone, Oak Hill, VA 67.9 °F 67 °F 98% SSW  at  0.0 mph 0.00 in / hr 375 ft 8:03 AM EDT Rapid Fire  
Kincaid Forest, Leesburg, VA 68.9 °F 69 °F 99% SSE  at  0.0 mph 0.00 in / hr 294 ft 7:59 AM EDT Normal  
Fox Mill, Herndon, VA 69.4 °F 37 °F 31% WNW  at  0.0 mph 0.00 in / hr 383 ft 8:03 AM EDT Rapid Fire  
Hawk Ridge Subdivision, Reston, VA 67.6 °F 67 °F 99% South  at  0.0 mph 0.00 in / hr 300 ft 8:00 AM EDT Normal
Wind Power Cube, Chantilly, VA 70.0 °F 69 °F 96% South  at  3.8 mph 0.00 in / hr 203 ft 8:04 AM EDT Normal  
Lakes at Red Rock, Leesburg, VA 69.3 °F 67 °F 91% WNW  at  0.0 mph 0.00 in / hr 276 ft 8:00 AM EDT Normal  
APRSWXNET Great Falls V, Great Falls, VA 68 °F 66 °F 93% WNW  at  0 mph 0.00 in / hr 296 ft 7:41 AM EDT MADIS
Big Woods, Leesburg, VA 66.7 °F 65 °F 94% East  at  0.0 mph 0.00 in / hr 489 ft 7:59 AM EDT Normal  
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