Herndon, VA

12:26 AM EDT on May 28, 2012 (GMT -0400)
Elev: 341 ft
Lon: 77.4° W
Lat: 39.0° N
Source
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Tropical Weather: Tropical Storm Beryl (North Atlantic)
Weather Summary
Jessica Parker
Weather Underground midday recap for Sunday, May 27, 2012.

Tropical Storm Beryl, located about 110 miles east of Jacksonville, Florida, continued to effect the coasts of northeastern Florida and Georgia on Sunday. Beryl moved toward the west near 10 mph this afternoon, with sustained winds of 43 mph and gust to 52 mph. A westward motion was expected to continue through landfall Sunday night. Tropical storm conditions reached the coast of northeast Florida and southeastern Georgia this afternoon and were expected to continue through tonight. Dangerous surf conditions, including rip currents and storm surge effected coastal areas of northeastern Florida and Georgia, while rain spread inland. For more information on Tropical Storm Beryl, please visit http://www.wunderground.com/tropical.

Meanwhile, to the north, a deep storm from the Northwest moved into the Dakotas. The storm kicked up rain showers and high elevation snow across the Northern and Central Rockies and rain showers in North Dakota. Winter Weather Advisories remained in effect for elevations above 5,000 feet in the Northern Rockies through this evening. New snow accumulations of 1 to 3 inches were anticipated across the lower elevations, with 4 to 6 inches possible for higher elevations through this evening. Moist winds from this system also supported a few light showers and thunderstorms in parts of the Northern Intermountains West and Upper Central Great Basin.

Ahead of the system, an associated warm front reached from the Northern Plains through the Lower Great Lakes. Moisture from the Gulf of Mexico spread across the front and aided in producing rain and thunderstorms across northern Michigan and northwestern Pennsylvania. Behind this activity, a cold front with a wave of low pressure extended southwestward from the low and pushed across the Central Plains. Portions of the Central Plains, from northern Kansas across eastern Nebraska and northwestern Iowa and southwestern Minnesota were at moderate risk of severe weather development. The main concerns with severe storms in these areas were large hail events, damaging wind gusts, and possible tornadoes. A slight risk of severe development surrounded the moderate risk area from the Southern and Central Plains into the Upper Great Lakes. Parts of northeastern Ohio to extreme western New York were also at slight risk of severe weather development with damaging winds and heavy rainfall.
Weather Underground midday recap for Sunday, May 27, 2012.

Tropical Storm Beryl, located about 110 miles east of Jacksonville, Florida, continued to effect the coasts of northeastern Florida and Georgia on Sunday. Beryl moved toward the west near 10 mph this afternoon, with sustained winds of 43 mph and gust to 52 mph. A westward motion was expected to continue through landfall Sunday night. Tropical storm conditions reached the coast of northeast Florida and southeastern Georgia this afternoon and were expected to continue through tonight. Dangerous surf conditions, including rip currents and storm surge effected coastal areas of northeastern Florida and Georgia, while rain spread inland. For more information on Tropical Storm Beryl, please visit http://www.wunderground.com/tropical.

Meanwhile, to the north, a deep storm from the Northwest moved into the Dakotas. The storm kicked up rain showers and high elevation snow across the Northern and Central Rockies and rain showers in North Dakota. Winter Weather Advisories remained in effect for elevations above 5,000 feet in the Northern Rockies through this evening. New snow accumulations of 1 to 3 inches were anticipated across the lower elevations, with 4 to 6 inches possible for higher elevations through this evening. Moist winds from this system also supported a few light showers and thunderstorms in parts of the Northern Intermountains West and Upper Central Great Basin.

Ahead of the system, an associated warm front reached from the Northern Plains through the Lower Great Lakes. Moisture from the Gulf of Mexico spread across the front and aided in producing rain and thunderstorms across northern Michigan and northwestern Pennsylvania. Behind this activity, a cold front with a wave of low pressure extended southwestward from the low and pushed across the Central Plains. Portions of the Central Plains, from northern Kansas across eastern Nebraska and northwestern Iowa and southwestern Minnesota were at moderate risk of severe weather development. The main concerns with severe storms in these areas were large hail events, damaging wind gusts, and possible tornadoes. A slight risk of severe development surrounded the moderate risk area from the Southern and Central Plains into the Upper Great Lakes. Parts of northeastern Ohio to extreme western New York were also at slight risk of severe weather development with damaging winds and heavy rainfall.
Weather Underground Broadcast Network

Herndon Weather at a Glance

Updated 11:38 PM EDT
Weather Station - report
VADOT Site_G, Herndon
Elevation
339 ft
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Now
Mostly Cloudy
Mostly Cloudy
Temperature
68 °F
Feels Like 68 °F
Wind(mph)
5
Sunrise / Set
5:47 AM
8:26 PM
Moon
Waxing Crescent
Tonight
Chance of a Thunderstorm 72 °F
Chance of T-storms
50% chance of precipitation
Monday
Chance of a Thunderstorm 90 °F
Chance of T-storms
20% chance of precipitation
Monday Night
Partly Cloudy 70 °F
Partly Cloudy
Tuesday
Chance of a Thunderstorm 88 | 68 °F
Chance of T-storms
40% chance of precipitation
Wednesday
Chance of a Thunderstorm 86 | 55 °F
Chance of T-storms
20% chance of precipitation
Tropical Storm Beryl
Thursday
Clear 79 | 59 °F
Clear
Today is forecast to be nearly the same temperature as yesterday.
Conditions
Pressure
30.09 in
Visibility
10.0 miles
Clouds
Few 10000 ft
Mostly Cloudy 15000 ft
Mostly Cloudy 22000 ft
Moisture
Humidity
91%
Rainfall
0.17 in
Snow Depth
Not available.
METAR
METAR KIAD 280352Z 21006KT 10SM FEW100 BKN150 BKN220 19/19 A3010 RMK AO2 SLP189 T01940189
Don't speak METAR? Read our FAQ.
Weather Radio
Launch Weather Radio
Temperature
Temperature
68 °F
Dew Point
66 °F
Wind
Speed / Dir
5 mph from South
Wind Gust
7.0 mph
Health
UV
0 out of 16
Pollen
7.70 out of 12
Pollen Forecast
Ozone
Good
PM2.5
Good
Flu Activity
Sporadic
View Flu Map
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Source: BestForecast
Descriptive Forecast
Monday
chancetstorms Partly cloudy with a chance of a thunderstorm and a chance of rain in the afternoon. High of 90F with a heat index of 95F. Winds from the SSW at 5 to 10 mph. Chance of rain 20%.
Monday Night
nt_partlycloudy Partly cloudy. Low of 70F. Winds from the SSW at 5 to 10 mph.
Tuesday
chancetstorms Partly cloudy with a chance of a thunderstorm and a chance of rain in the morning, then mostly cloudy with a chance of a thunderstorm and a chance of rain. High of 88F with a heat index of 102F. Winds from the SSW at 10 to 15 mph. Chance of rain 40%.
Tuesday Night
nt_chancetstorms Mostly cloudy with a chance of a thunderstorm and a chance of rain. Low of 68F. Winds from the SW at 5 to 10 mph. Chance of rain 40%.
Wednesday
chancetstorms Partly cloudy with a chance of rain. High of 86F. Winds from the West at 5 to 10 mph. Chance of rain 20%. Tropical Storm Beryl: Estimated distance to storm center 336 mi. Max sustained winds 39 mph with stronger gusts possible.
Wednesday Night
nt_chancerain Partly cloudy with a chance of rain in the evening, then clear. Low of 55F. Winds from the West at 5 to 10 mph shifting to the NNW after midnight. Chance of rain 20%. Tropical Storm Beryl: Estimated distance to storm center 336 mi. Max sustained winds 39 mph with stronger gusts possible.
Thursday
clear Clear. High of 79F. Winds from the NNW at 5 to 15 mph.
Thursday Night
nt_clear Clear in the evening, then mostly cloudy. Low of 59F. Winds less than 5 mph.
Friday
chancerain Overcast with a chance of rain. High of 79F. Winds from the ESE at 5 to 10 mph. Chance of rain 70% with rainfall amounts near 0.3 in. possible.
Friday Night
nt_chancetstorms Mostly cloudy with a chance of a thunderstorm. Low of 52F. Winds from the SW at 10 to 15 mph. Chance of rain 60% with rainfall amounts near 0.7 in. possible.
Saturday
partlycloudy Partly cloudy. High of 77F. Breezy. Winds from the WNW at 15 to 20 mph.
Saturday Night
nt_clear Clear. Low of 50F. Winds from the NW at 5 to 15 mph.
Sunday
partlycloudy Partly cloudy. High of 79F. Winds from the WNW at 5 to 15 mph.
Sunday Night
nt_partlycloudy Partly cloudy. Low of 59F. Winds from the West at 5 to 10 mph.
Monday
chancerain Partly cloudy with a chance of rain. High of 81F. Winds from the WNW at 5 to 10 mph. Chance of rain 20%.
Monday Night
nt_chancerain Partly cloudy with a chance of rain. Low of 61F. Winds less than 5 mph. Chance of rain 20%.
Tuesday
chancetstorms Partly cloudy with a chance of a thunderstorm. High of 81F. Winds less than 5 mph. Chance of rain 20%.
Tuesday Night
nt_chancetstorms Partly cloudy with a chance of a thunderstorm. Low of 64F. Winds less than 5 mph. Chance of rain 20%.
Wednesday
chancetstorms Partly cloudy with a chance of a thunderstorm. High of 86F with a heat index of 99F. Winds less than 5 mph. Chance of rain 20%.
Wednesday Night
nt_chancetstorms Partly cloudy with a chance of a thunderstorm. Low of 66F. Winds less than 5 mph. Chance of rain 20%.
Thursday
clear Clear. High of 86F with a heat index of 99F. Winds less than 5 mph.
Thursday Night
nt_clear Clear. Low of 66F. Winds less than 5 mph.
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Nowcast as of 11:19 PM EDT on May 27, 2012
Area of light rain will continue to taper off across the greater Baltimore-Washington Metro area. Some showers may develop across central Maryland and northern Virginia. Through 1230am...expect up to an additional couple hundredths of an inch of rainfall.

Forecast

View Calendar 10-Day Forecast for station KVAHERND8

Monday, 28
Chance of a Thunderstorm
90 | 70 °F
Chance of T-storms
Chance of
Precipitation
20%
Tuesday, 29
Chance of a Thunderstorm
88 | 68 °F
Chance of T-storms
Chance of
Precipitation
40%
Wednesday, 30
Chance of a Thunderstorm
86 | 55 °F
Chance of T-storms
Chance of
Precipitation
20%
Thursday, 31
Clear
79 | 59 °F
Clear
Chance of
Precipitation
0%
Friday, 1
Chance of Rain
79 | 52 °F
Chance of Rain
Chance of
Precipitation
70%
Saturday, 2
Partly Cloudy
77 | 50 °F
Partly Cloudy
Chance of
Precipitation
0%
Sunday, 3
Partly Cloudy
79 | 59 °F
Partly Cloudy
Chance of
Precipitation
0%
Monday, 4
Chance of Rain
81 | 61 °F
Chance of Rain
Chance of
Precipitation
20%
Tuesday, 5
Chance of a Thunderstorm
81 | 64 °F
Chance of T-storms
Chance of
Precipitation
20%
Wednesday, 6
Chance of a Thunderstorm
86 | 66 °F
Chance of T-storms
Chance of
Precipitation
20%
Source: BestForecast at 9:47 PM EDT on May 27, 2012
Descriptive Forecast
Monday
chancetstorms Partly cloudy with a chance of a thunderstorm and a chance of rain in the afternoon. High of 90F with a heat index of 95F. Winds from the SSW at 5 to 10 mph. Chance of rain 20%.
Monday Night
nt_partlycloudy Partly cloudy. Low of 70F. Winds from the SSW at 5 to 10 mph.
Hourly Forecast 6AM 12 Noon 6PM 12 Midnight
Temp. | Dew Point 72 | 69 84 | 73 86 | 72 76 | 70
Wind 6 mph South 8 mph SSW 8 mph South 6 mph South
Humidity 88% 70% 65% 81%
Chance of Precip. 10% 10% 20% 10%
Cloud Cover 57% 28% 57% 47%
Conditions Partly Cloudy Partly Cloudy Chance of a Thunderstorm Partly Cloudy
Sunrise & Sunset
5:47 AM
8:26 PM
The quality of the forecasted high temperature for this day is good. MaxT RMSE [1.96], Average RMSE [1.61]
The National Weather Service forecast quality is good. MaxT RMSE [1.89], Average RMSE [1.59] : Use NWS
Source: BestForecast at 9:47 PM EDT on May 27, 2012
Descriptive Forecast
Tuesday
chancetstorms Partly cloudy with a chance of a thunderstorm and a chance of rain in the morning, then mostly cloudy with a chance of a thunderstorm and a chance of rain. High of 88F with a heat index of 102F. Winds from the SSW at 10 to 15 mph. Chance of rain 40%.
Tuesday Night
nt_chancetstorms Mostly cloudy with a chance of a thunderstorm and a chance of rain. Low of 68F. Winds from the SW at 5 to 10 mph. Chance of rain 40%.
Hourly Forecast 6AM 12 Noon 6PM 12 Midnight
Temp. | Dew Point 72 | 68 83 | 76 86 | 77 74 | 67
Wind 7 mph SSW 11 mph SSW 10 mph SSW 4 mph SW
Humidity 88% 76% 77% 80%
Chance of Precip. 10% 30% 40% 40%
Cloud Cover 48% 57% 71% 83%
Conditions Partly Cloudy Chance of a Thunderstorm Chance of a Thunderstorm Chance of a Thunderstorm
Sunrise & Sunset
5:46 AM
8:27 PM
The quality of the forecasted high temperature for this day is good. MaxT RMSE [2.16], Average RMSE [2.41]
The National Weather Service forecast quality is good. MaxT RMSE [1.78], Average RMSE [1.96] : Use NWS
Source: BestForecast at 9:47 PM EDT on May 27, 2012
Descriptive Forecast
Wednesday
chancetstorms Partly cloudy with a chance of rain. High of 86F. Winds from the West at 5 to 10 mph. Chance of rain 20%. Tropical Storm Beryl: Estimated distance to storm center 336 mi. Max sustained winds 39 mph with stronger gusts possible.
Wednesday Night
nt_chancerain Partly cloudy with a chance of rain in the evening, then clear. Low of 55F. Winds from the West at 5 to 10 mph shifting to the NNW after midnight. Chance of rain 20%. Tropical Storm Beryl: Estimated distance to storm center 336 mi. Max sustained winds 39 mph with stronger gusts possible.
Hourly Forecast 6AM 12 Noon 6PM 12 Midnight
Temp. | Dew Point 71 | 66 81 | 63 81 | 58 68 | 62
Wind 4 mph WSW 7 mph WNW 7 mph West 7 mph West
Humidity 87% 55% 46% 78%
Chance of Precip. 40% 20% 10% 20%
Cloud Cover 77% 54% 40% 13%
Conditions Chance of a Thunderstorm Chance of Rain Partly Cloudy Chance of Rain
Sunrise & Sunset
5:46 AM
8:28 PM
The quality of the forecasted high temperature for this day is fair. MaxT RMSE [2.79], Average RMSE [2.27]
The National Weather Service forecast quality is good. MaxT RMSE [2.38], Average RMSE [2.00] : Use NWS
Source: BestForecast at 9:47 PM EDT on May 27, 2012
Descriptive Forecast
Thursday
clear Clear. High of 79F. Winds from the NNW at 5 to 15 mph.
Thursday Night
nt_clear Clear in the evening, then mostly cloudy. Low of 59F. Winds less than 5 mph.
Hourly Forecast 6AM 12 Noon 6PM 12 Midnight
Temp. | Dew Point 58 | 52 72 | 49 75 | 51 64 | 57
Wind 8 mph NNW 9 mph NNW 6 mph North 4 mph SSE
Humidity 80% 44% 42% 78%
Chance of Precip. 0% 0% 0% 0%
Cloud Cover 0% 0% 0% 0%
Conditions Clear Clear Clear Clear
Sunrise & Sunset
5:46 AM
8:28 PM
The quality of the forecasted high temperature for this day is good. MaxT RMSE [2.25], Average RMSE [1.96]
The National Weather Service forecast quality is fair. MaxT RMSE [2.75], Average RMSE [1.77] : Use NWS
Source: BestForecast at 9:47 PM EDT on May 27, 2012
Descriptive Forecast
Friday
chancerain Overcast with a chance of rain. High of 79F. Winds from the ESE at 5 to 10 mph. Chance of rain 70% with rainfall amounts near 0.3 in. possible.
Friday Night
nt_chancetstorms Mostly cloudy with a chance of a thunderstorm. Low of 52F. Winds from the SW at 10 to 15 mph. Chance of rain 60% with rainfall amounts near 0.7 in. possible.
Hourly Forecast 6AM 12 Noon 6PM 12 Midnight
Temp. | Dew Point 60 | 55 76 | 63 75 | 70 67 | 62
Wind 5 mph SE 9 mph ESE 10 mph ESE 10 mph SW
Humidity 80% 65% 87% 86%
Chance of Precip. 10% 30% 30% 40%
Cloud Cover 78% 92% 98% 65%
Conditions Mostly Cloudy Chance of Rain Chance of Rain Chance of a Thunderstorm
Sunrise & Sunset
5:45 AM
8:29 PM
The quality of the forecasted high temperature for this day is fair. MaxT RMSE [3.28], Average RMSE [2.33]
The National Weather Service forecast quality is fair. MaxT RMSE [2.98], Average RMSE [2.09] : Use NWS
Source: BestForecast at 9:47 PM EDT on May 27, 2012
Descriptive Forecast
Saturday
partlycloudy Partly cloudy. High of 77F. Breezy. Winds from the WNW at 15 to 20 mph.
Saturday Night
nt_clear Clear. Low of 50F. Winds from the NW at 5 to 15 mph.
Hourly Forecast 6AM 12 Noon 6PM 12 Midnight
Temp. | Dew Point 56 | 52 70 | 56 68 | 54 62 | 57
Wind 10 mph WNW 16 mph WNW 14 mph WNW 8 mph NW
Humidity 89% 63% 60% 80%
Chance of Precip. 10% 10% 0% 0%
Cloud Cover 0% 41% 41% 0%
Conditions Clear Partly Cloudy Partly Cloudy Clear
Sunrise & Sunset
5:45 AM
8:29 PM
The quality of the forecasted high temperature for this day is good. MaxT RMSE [2.48], Average RMSE [2.46]
The National Weather Service forecast quality is poor. MaxT RMSE [3.55], Average RMSE [2.49] : Use NWS
Source: BestForecast at 9:47 PM EDT on May 27, 2012
Descriptive Forecast
Sunday
partlycloudy Partly cloudy. High of 79F. Winds from the WNW at 5 to 15 mph.
Sunday Night
nt_partlycloudy Partly cloudy. Low of 59F. Winds from the West at 5 to 10 mph.
Hourly Forecast 6AM 12 Noon 6PM 12 Midnight
Temp. | Dew Point 53 | 49 72 | 53 76 | 60 62 | 57
Wind 9 mph WNW 10 mph NW 8 mph WNW 6 mph West
Humidity 89% 54% 58% 83%
Chance of Precip. 0% 0% 0% 0%
Cloud Cover 0% 42% 42% 56%
Conditions Clear Partly Cloudy Partly Cloudy Partly Cloudy
Sunrise & Sunset
5:45 AM
8:29 PM
The quality of the forecasted high temperature for this day is fair. MaxT RMSE [2.94], Average RMSE [2.92]
The National Weather Service forecast quality is poor. MaxT RMSE [3.57], Average RMSE [2.56] : Use NWS
Source: BestForecast at 9:47 PM EDT on May 27, 2012
Descriptive Forecast
Monday
chancerain Partly cloudy with a chance of rain. High of 81F. Winds from the WNW at 5 to 10 mph. Chance of rain 20%.
Monday Night
nt_chancerain Partly cloudy with a chance of rain. Low of 61F. Winds less than 5 mph. Chance of rain 20%.
Hourly Forecast 6AM 12 Noon 6PM 12 Midnight
Temp. | Dew Point 62 | 56 74 | 65 78 | 66 63 | 54
Wind 5 mph SW 6 mph WNW 5 mph WNW 4 mph WNW
Humidity 78% 71% 67% 72%
Chance of Precip. 0% 0% 10% 10%
Cloud Cover 73% 74% 56% 38%
Conditions Mostly Cloudy Mostly Cloudy Partly Cloudy Partly Cloudy
Sunrise & Sunset
5:45 AM
8:29 PM
The quality of the forecasted high temperature for this day is fair. MaxT RMSE [3.17], Average RMSE [3.06]
Source: BestForecast at 9:47 PM EDT on May 27, 2012
Descriptive Forecast
Tuesday
chancetstorms Partly cloudy with a chance of a thunderstorm. High of 81F. Winds less than 5 mph. Chance of rain 20%.
Tuesday Night
nt_chancetstorms Partly cloudy with a chance of a thunderstorm. Low of 64F. Winds less than 5 mph. Chance of rain 20%.
Hourly Forecast 6AM 12 Noon 6PM 12 Midnight
Temp. | Dew Point 65 | 56 76 | 68 80 | 71 67 | 60
Wind 2 mph WNW 2 mph West 2 mph WSW 2 mph SW
Humidity 77% 78% 76% 78%
Chance of Precip. 10% 0% 10% 10%
Cloud Cover 20% 13% 16% 23%
Conditions Clear Clear Clear Clear
Sunrise & Sunset
5:45 AM
8:29 PM
The quality of the forecasted high temperature for this day is fair. MaxT RMSE [3.49], Average RMSE [3.75]
Source: BestForecast at 9:47 PM EDT on May 27, 2012
Descriptive Forecast
Wednesday
chancetstorms Partly cloudy with a chance of a thunderstorm. High of 86F with a heat index of 99F. Winds less than 5 mph. Chance of rain 20%.
Wednesday Night
nt_chancetstorms Partly cloudy with a chance of a thunderstorm. Low of 66F. Winds less than 5 mph. Chance of rain 20%.
Hourly Forecast 6AM 12 Noon 6PM 12 Midnight
Temp. | Dew Point 67 | 64 79 | 74 84 | 77 69 | 63
Wind 2 mph WSW 1 mph SW 2 mph SSW 1 mph SW
Humidity 84% 83% 80% 82%
Chance of Precip. 10% 0% 10% 10%
Cloud Cover 33% 41% 44% 39%
Conditions Partly Cloudy Partly Cloudy Partly Cloudy Partly Cloudy
Sunrise & Sunset
5:45 AM
8:29 PM
Source: BestForecast at 9:47 PM EDT on May 27, 2012
Descriptive Forecast
Thursday
clear Clear. High of 86F with a heat index of 99F. Winds less than 5 mph.
Thursday Night
nt_clear Clear. Low of 66F. Winds less than 5 mph.
Hourly Forecast 6AM 12 Noon 6PM 12 Midnight
Temp. | Dew Point 69 | 65 81 | 75 84 | 77 68 | 62
Wind 1 mph WSW 1 mph SW 1 mph SW 1 mph WSW
Humidity 86% 84% 79% 82%
Chance of Precip. 10% 0% 0% 0%
Cloud Cover 24% % % %
Conditions Clear Clear Clear Clear
Sunrise & Sunset
5:45 AM
8:29 PM
Scientific Forecaster Discussion — MOS Weather Graph
Nearby
History & Almanac
May 28, 2012 Max Temp Min Temp
Normal (KIAD) 78 °F 54 °F
Record (KIAD) 90 °F (1991) 37 °F (1994)
Yesterday 86 °F 69 °F
Yesterday's Cooling Degree Days: 13
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
OZONE
Yesterday Good
PM10
Current Good
PM2.5
Current Good
OZONE
Sunday Unhealthy for Sensitive Groups
OZONE
Sunday Moderate
PM2.5
Monday Moderate
OZONE
Monday Moderate
PM2.5
Tuesday Moderate
OZONE
Tuesday Moderate
PM2.5
Wednesday Good
OZONE
Wednesday Good
PM2.5
Coastal Water Temperatures
Place Temperature
Washington, DC 78.1 °F
Baltimore, MD 78.1 °F
Solomons Island, MD 73.0 °F
Marine Forecast
Astronomy
May. 28, 2012 Rise Set
Actual Time 5:47 AM EDT 8:26 PM EDT
Civil Twilight 5:16 AM EDT 8:58 PM EDT
Nautical Twilight 4:37 AM EDT 9:37 PM EDT
Astronomical Twilight 3:53 AM EDT 10:20 PM EDT
Moon 12:53 PM EDT 1:05 AM EDT
Length Of Visible Light 15h 41m
Length of Day
14h 39m
Tomorrow will be 1m 13s longer.
Waxing Crescent, 43% of the Moon is Illuminated
Today
Waxing Crescent
May 28
First Quarter
Jun 4
Full
Jun 11
Last Quarter
Jun 19
New
Visit Astronomy
Today's Extremes
State Highs State Lows
90 °F
Warrenton
89 °F
Fredericksburg
89 °F
Quantico
89 °F
Jonesville
89 °F
Williamsburg
60 °F
Blacksburg
60 °F
South Hill
60 °F
Emporia
61 °F
West Point
62 °F
Farmville
Record Extremes
Snow Depth
Station Depth Elevation
No new snow has been reported.
Snow Depth Reports — Snow Depth Map
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Travel & Activities
Travel Planning
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Nearby Events
Event Date Forecast
Viva Vienna Festival 4:00 PM EDT 2012-05-28 Partly Cloudy, 87°F
Mr. Knick Knack! Children's Performance 10:00 AM EDT 2012-05-28 Partly Cloudy, 80°F
Mega Multi Vendor Garage Sale 9:00 AM EDT 2012-05-28 Partly Cloudy, 77°F
Dart Night 8:00 PM EDT 2012-05-29 Chance of a Thunderstorm, 81°F
Moon Hooch 8:00 PM EDT 2012-05-29 Chance of a Thunderstorm, 81°F
Google to Great: Using Google to Advance Your Small Business - May 29, 2012 6:00 PM EDT 2012-05-29 Chance of a Thunderstorm, 84°F
Event data courtesy eviesays.com
Aviation
City Temp. Conditions Updated
Dulles Airport 67 °F Mostly Cloudy 11:52 PM EDT
Leesburg 64 °F Scattered Clouds 12:15 AM EDT
Gaithersburg 66 °F Partly Cloudy 12:15 AM EDT
Manassas 68 °F Clear 12:15 AM EDT
View all Aviation Tools
Flight To ETA Status
UAL133
Richmond, VA 		KIAD 12:05AM On Time
CMP488
Panama City 		KIAD 12:16AM On Time
AAL1710
Dallas-Fort Worth, TX 		KIAD 12:18AM On Time
CJC3921
Burlington, VT 		KIAD 12:21AM On Time
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Type Condition
Flight Rule: VFR (KIAD)
Wind Speed: 6.0 kts.
Wind Dir: 188° (South)
Ceiling: 15000 ft

METAR KIAD 280352Z 21006KT 10SM FEW100 BKN150 BKN220 19/19 A3010 RMK AO2 SLP189 T01940189

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Sports
Event Date Forecast
Nationals vs. Braves 8:05 PM EDT on May 27, 2012 Partly Cloudy, 86 °F
Cardinals vs. Braves 1:10 PM EDT on May 28, 2012 Chance of a Thunderstorm, 83 °F
Braves vs. Nationals 7:05 PM EDT on June 01, 2012 Chance of a Thunderstorm, 72 °F
Braves vs. Nationals 4:05 PM EDT on June 02, 2012 Partly Cloudy, 70 °F
Event Date Forecast
Córdoba CF vs. Celta Vigo 12:00 PM CEST on June 02, 2012 Clear, High 82° F/ 28° C
Alcorcón vs. Numancia 12:00 PM CEST on June 02, 2012 Clear, High 73° F/ 23° C
Montreal vs. D.C. 7:30 PM EDT on June 30, 2012 Average High 87° F/ 30° C
Columbus vs. D.C. 7:30 PM EDT on August 04, 2012 Average High 88° F/ 31° C
Event Date Forecast
Coca-Cola 600 6:16 PM EDT on May 27, 2012 Partly Cloudy, 85 °F
FedEx 400 benefiting Autism Speaks 1:15 PM EDT on June 03, 2012 Chance of Rain, 72 °F
Event Date Forecast
the Memorial Tournament presented by Nationwide Insurance 8:30 AM EDT on May 31, 2012 Partly Cloudy, 56 °F
the Memorial Tournament presented by Nationwide Insurance 8:30 AM EDT on June 01, 2012 Chance of a Thunderstorm, 56 °F
AT&T National 8:30 AM EDT on June 28, 2012 Average High 86° F/ 29° C
AT&T National 8:30 AM EDT on June 29, 2012 Average High 87° F/ 30° C
View all Sports Weather
Weather Stations
Station Location Temp. Heat Index Dew Point Humidity Wind Precipitation Elevation Updated Type Website
VADOT Site_G, Herndon, VA 68 °F - 66 °F 91% South  at  5 mph 0.00 in / hr 339 ft 11:38 PM EDT MADIS
Reston - West Market, Reston, VA 68.4 °F - 68 °F 100% South  at  0.0 mph 0.04 in / hr 430 ft 12:26 AM EDT Rapid Fire  
APRSWXNET Reston VA , Herndon, VA 67 °F - 66 °F 95% WSW  at  0 mph 0.01 in / hr 454 ft 12:03 AM EDT MADIS
Falls Brook, Herndon, VA 66.2 °F - 65 °F 97% SSW  at  0.0 mph 0.00 in / hr 280 ft 12:19 AM EDT Normal  
Golf Course Island, Reston, VA 67.9 °F - 66 °F 94% WNW  at  2.0 mph 0.00 in / hr 390 ft 12:26 AM EDT Normal  
APRSWXNET Reston VA , Herndon, VA 67 °F - 65 °F 94% SW  at  3 mph 0.00 in / hr 400 ft 11:55 PM EDT MADIS
APRSWXNET Great Falls VA , Sterling, VA 67 °F - 66 °F 97% SW  at  0 mph 0.00 in / hr 321 ft 11:53 PM EDT MADIS
Chantilly Highlands, Herndon, VA 67.5 °F - 67 °F 99% West  at  4.5 mph 0.00 in / hr 340 ft 12:25 AM EDT Rapid Fire  
Colvin Run at Hunter Mill Rd (One Lane B, Vienna, VA 67.1 °F - 65 °F 92% West  at  0.0 mph 0.00 in / hr 295 ft 12:25 AM EDT Normal  
Cedar Cove Cluster, Reston, VA 68.2 °F - 65 °F 91% SSW  at  0.0 mph 0.00 in / hr 350 ft 12:25 AM EDT Rapid Fire  
Lake Fairfax, Vienna, VA 67.4 °F - 65 °F 93% NW  at  1.0 mph 0.00 in / hr 275 ft 12:25 AM EDT Rapid Fire
Hickory Creek, Great Falls, VA 67.1 °F - 66 °F 95% NW  at  0.0 mph 0.00 in / hr 350 ft 12:25 AM EDT Rapid Fire
Great Falls VA, Great Falls, VA 66.2 °F - 66 °F 100% West  at  0.0 mph 0.00 in / hr 380 ft 12:25 AM EDT Normal
APRSWXNET Great Falls VA , Great Falls, VA 66 °F - 66 °F 100% South  at  2 mph 0.00 in / hr 380 ft 11:50 PM EDT MADIS
Weatherscience.net, Potomac Falls, VA 66.3 °F - 66 °F 98% NNW  at  0.0 mph 0.00 in / hr 276 ft 12:25 AM EDT Rapid Fire
Hawk Ridge Subdivision, Reston, VA 66.8 °F - 66 °F 99% West  at  0.0 mph 0.00 in / hr 300 ft 12:20 AM EDT Normal
Folkstone, Oak Hill, VA 66.8 °F - 66 °F 98% SW  at  0.0 mph 0.01 in / hr 375 ft 11:14 PM EDT Normal  
Gracie's Window in FranklinGlen, Fairfax, VA 69.1 °F - 64 °F 84% SSW  at  2.7 mph 0.00 in / hr 365 ft 12:10 AM EDT Rapid Fire  
Franklin Glen/KR4YO, Fairfax, VA 67.3 °F - 67 °F 98% North  at  0.0 mph 0.00 in / hr 367 ft 12:25 AM EDT Rapid Fire  
APRSWXNET Great Falls V, Great Falls, VA 68 °F - 66 °F 92% South  at  0 mph 0.00 in / hr 296 ft 12:04 AM EDT MADIS
Ashburn Village, Ashburn, VA 66.9 °F - 66 °F 96% WNW  at  0.0 mph - / hr 320 ft 12:19 AM EDT Normal  
Brookfield, Chantilly, VA 68.4 °F - 46 °F 44% NW  at  0.0 mph 0.00 in / hr 260 ft 12:25 AM EDT Normal  
VADOT Site_C, Oakton, VA 70 °F - 67 °F 92% North  at  - 0.00 in / hr 290 ft 11:36 PM EDT MADIS
Wind Power Cube, Chantilly, VA 67.5 °F - 65 °F 92% SW  at  4.5 mph 0.00 in / hr 203 ft 12:26 AM EDT Rapid Fire  
Broad Run, Potomac Falls, VA 79.7 °F 82 °F 66 °F 62% ESE  at  4.0 mph 0.00 in / hr 111 ft 8:44 PM EDT Rapid Fire  
Ashburn Village 1, Ashburn, VA 66.7 °F - 65 °F 95% WSW  at  1.0 mph 0.00 in / hr 279 ft 12:26 AM EDT Rapid Fire  
Old Ashburn, Ashburn, VA 67.1 °F - 65 °F 94% South  at  0.7 mph 0.00 in / hr 289 ft 12:25 AM EDT Rapid Fire  
Trott Ave, Vienna, VA 67.1 °F - 67 °F 99% West  at  0.0 mph - / hr 415 ft 12:14 AM EDT Normal  
VADOT Site_E, Oakton, VA 69 °F - 69 °F 98% North  at  - 0.00 in / hr 353 ft 11:44 PM EDT MADIS
Brambleton, Brambleton, VA 67.5 °F - 66 °F 94% West  at  0.0 mph 0.00 in / hr 310 ft 12:25 AM EDT Rapid Fire  
Ridings at Blue Springs, Chantilly, VA 67.5 °F - 65 °F 93% East  at  0.0 mph 0.04 in / hr 303 ft 12:23 AM EDT Normal
Broadlands, Ashburn, VA 67.1 °F - 66 °F 95% West  at  3.0 mph 0.00 in / hr 391 ft 12:25 AM EDT Rapid Fire  
Beulah-Wolf Trap, Vienna, VA 66.7 °F - 65 °F 94% ESE  at  0.0 mph 0.00 in / hr 430 ft 12:26 AM EDT Rapid Fire  
NE Vienna, Vienna, VA 66.8 °F - 65 °F 94% ESE  at  0.0 mph - / hr 417 ft 12:17 AM EDT Normal  
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