Chantilly, VA

3:56 AM EST on February 10, 2012 (GMT -0500)
Elev: 272 ft
Lon: 77.5° W
Lat: 38.9° N
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Tropical Weather: Tropical Cyclone Giovanna (South Indian Ocean) Tropical Cyclone Jasmine (Southern Pacific)
Weather Summary
Weather Underground Forecast for Friday, February 10, 2012.

Expect active weather to move into the East on Friday, as a trough of low pressure moves from the Southern Plains and into the Eastern Valleys. Flow around this system will pull moisture and energy in from the Gulf of Mexico. This will produce scattered showers and thunderstorms over the Southern Plains and Lower Mississippi River Valley throughout the day. There is a slight chance that these storms will turn severe with strong winds and heavy downpours. The northern side of this system will push a cold front into the Midwest, which will move through the Great Lakes and into the Ohio River Valley. Expect light and scattered snow showers to develop along the front as it passes through northern Michigan and into the eastern Ohio Valley and the Central Appalachians. Warmer temperatures ahead of this system will allow for rain showers to develop in parts of the Mid-Atlantic states and the Tennessee Valley.

Out West, a weak trough of low pressure moves onshore from the Pacific Ocean, bringing some moisture onshore with it. This will produce more rain and high elevation snow showers over the Pacific Northwest. Some of this moisture will stretch southward into northern California, allowing for light rain and high elevation snow showers to spread into the northern Sierras.
Weather Underground Forecast for Friday, February 10, 2012.

Expect active weather to move into the East on Friday, as a trough of low pressure moves from the Southern Plains and into the Eastern Valleys. Flow around this system will pull moisture and energy in from the Gulf of Mexico. This will produce scattered showers and thunderstorms over the Southern Plains and Lower Mississippi River Valley throughout the day. There is a slight chance that these storms will turn severe with strong winds and heavy downpours. The northern side of this system will push a cold front into the Midwest, which will move through the Great Lakes and into the Ohio River Valley. Expect light and scattered snow showers to develop along the front as it passes through northern Michigan and into the eastern Ohio Valley and the Central Appalachians. Warmer temperatures ahead of this system will allow for rain showers to develop in parts of the Mid-Atlantic states and the Tennessee Valley.

Out West, a weak trough of low pressure moves onshore from the Pacific Ocean, bringing some moisture onshore with it. This will produce more rain and high elevation snow showers over the Pacific Northwest. Some of this moisture will stretch southward into northern California, allowing for light rain and high elevation snow showers to spread into the northern Sierras.
Chantilly Weather at a Glance
Updated 3:52 AM EST
Elevation
303 ft
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Now
Partly Cloudy
Partly Cloudy
Temperature
31.5 °F
Feels Like 32 °F
Wind(mph)
0.0
Sunrise / Set
7:07 AM
5:41 PM
Moon
Waning Gibbous
Tonight
Partly Cloudy 25 °F
Partly Cloudy
Friday
Mostly Cloudy 49 °F
Mostly Cloudy
Friday Night
Snow 31 °F
Snow
80% chance of precipitation
Saturday
Chance of Snow 38 | 20 °F
Chance of Snow
30% chance of precipitation
Sunday
Partly Cloudy 32 | 22 °F
Partly Cloudy
Monday
Clear 43 | 29 °F
Clear
Today is forecast to be nearly the same temperature as yesterday.
Conditions
Pressure
30.17 in
Visibility
10.0 miles
Clouds
Few 11000 ft
Moisture
Humidity
72%
Rainfall
0.00 in
Snow Depth
Not available.
METAR
METAR KIAD 100752Z 34004KT 10SM FEW110 00/M05 A3017 RMK AO2 SLP217 T00001050
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Weather Radio
Temperature
Windchill
32 °F
Dew Point
24 °F
Wind
Speed / Dir
Calm
Wind Gust
1.0 mph
Health
UV
0 out of 16
Pollen
1.60 out of 12
Pollen Forecast
Ozone
Good
PM2.5
Moderate
Flu Activity
Regional
View Flu Map
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Regional Forecast for Fairfax
Rest of the Overnight
nt_partlycloudy Partly cloudy. Lows in the upper 20s. Northwest winds around 5 mph.
Today
sunny Sunny in the morning...then becoming mostly cloudy. Highs in the upper 40s. North winds around 5 mph...becoming south around 5 mph in the afternoon.
Tonight
nt_snow Rain in the evening...then rain or snow likely after midnight. Little or no snow accumulation. Lows in the lower 30s. Northeast winds around 5 mph...becoming north around 5 mph after midnight. Chance of precipitation 80 percent.
Saturday
snow Mostly cloudy with a chance of rain and snow. Highs in the lower 40s. Northwest winds 5 to 10 mph...increasing to 15 to 20 mph with gusts up to 30 mph in the afternoon. Chance of precipitation 50 percent.
Saturday Night
nt_chancesnow Mostly cloudy with a chance of snow in the evening...then partly cloudy after midnight. Brisk with lows around 19. Northwest winds 20 to 25 mph with gusts up to 35 mph. Chance of snow 40 percent.
Sunday
partlycloudy Mostly sunny. Highs in the lower 30s.
Sunday Night
nt_sunny Mostly clear. Lows in the mid 20s.
Monday
sunny Sunny. Highs in the mid 40s.
Monday Night
nt_cloudy Mostly cloudy. Lows in the lower 30s.
Tuesday
cloudy Mostly cloudy. Highs in the upper 40s.
Tuesday Night
nt_cloudy Mostly cloudy. Lows in the lower 30s.
Wednesday
partlysunny Partly sunny. Highs in the upper 40s.
Wednesday Night
nt_partlycloudy Partly cloudy. Lows around 30.
Thursday
partlysunny Partly sunny. Highs in the upper 40s.
Source: NWS at 3:30 am EST on February 10, 2012
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Forecast
View Calendar 7-Day Weather Forecast for 20151
Friday, 10
Mostly Cloudy
49 | 31 °F
Mostly Cloudy
Chance of
Precipitation
10%
Saturday, 11
Chance of Snow
38 | 20 °F
Chance of Snow
Chance of
Precipitation
30%
Sunday, 12
Partly Cloudy
32 | 22 °F
Partly Cloudy
Chance of
Precipitation
0%
Monday, 13
Clear
43 | 29 °F
Clear
Chance of
Precipitation
0%
Tuesday, 14
Mostly Cloudy
47 | 31 °F
Mostly Cloudy
Chance of
Precipitation
10%
Wednesday, 15
Partly Cloudy
49 | 32 °F
Partly Cloudy
Chance of
Precipitation
10%
Thursday, 16
Chance of Rain
52 | NA
Chance of Rain
Chance of
Precipitation
20%
Source: NWS at 3:30 am EST on February 10, 2012
Regional Forecast for Fairfax
Rest of the Overnight
nt_partlycloudy Partly cloudy. Lows in the upper 20s. Northwest winds around 5 mph.
Today
sunny Sunny in the morning...then becoming mostly cloudy. Highs in the upper 40s. North winds around 5 mph...becoming south around 5 mph in the afternoon.
Tonight
nt_snow Rain in the evening...then rain or snow likely after midnight. Little or no snow accumulation. Lows in the lower 30s. Northeast winds around 5 mph...becoming north around 5 mph after midnight. Chance of precipitation 80 percent.
Hourly Forecast 6AM 12 Noon 6PM 12 Midnight
Temp. | Dew Point 28 | 24 43 | 23 43 | 30 39 | 32
Wind 0 mph North 3 mph ESE 3 mph East 4 mph North
Humidity 85% 46% 60% 79%
Chance of Precip. 0% 10% 10% 80%
Cloud Cover 60% 23% 89% 100%
Conditions Partly Cloudy Clear Mostly Cloudy Snow
Sunrise & Sunset
7:07 AM
5:41 PM
Source: NWS at 3:30 am EST on February 10, 2012
Regional Forecast for Fairfax
Saturday
snow Mostly cloudy with a chance of rain and snow. Highs in the lower 40s. Northwest winds 5 to 10 mph...increasing to 15 to 20 mph with gusts up to 30 mph in the afternoon. Chance of precipitation 50 percent.
Saturday Night
nt_chancesnow Mostly cloudy with a chance of snow in the evening...then partly cloudy after midnight. Brisk with lows around 19. Northwest winds 20 to 25 mph with gusts up to 35 mph. Chance of snow 40 percent.
Hourly Forecast 6AM 12 Noon 6PM 12 Midnight
Temp. | Dew Point 33 | 31 37 | 26 33 | 13 26 | 9
Wind 5 mph NNW 11 mph NW 19 mph NW 15 mph NW
Humidity 92% 67% 45% 48%
Chance of Precip. 80% 30% 30% 10%
Cloud Cover 98% 53% 71% 19%
Conditions Chance of Snow Partly Cloudy Chance of Snow Clear
Sunrise & Sunset
7:06 AM
5:42 PM
Source: NWS at 3:30 am EST on February 10, 2012
Regional Forecast for Fairfax
Sunday
partlycloudy Mostly sunny. Highs in the lower 30s.
Sunday Night
nt_sunny Mostly clear. Lows in the mid 20s.
Hourly Forecast 6AM 12 Noon 6PM 12 Midnight
Temp. | Dew Point 22 | 9 30 | 9 30 | 11 26 | 11
Wind 13 mph WNW 17 mph WNW 10 mph WNW 6 mph WNW
Humidity 55% 42% 46% 53%
Chance of Precip. 10% 0% 0% 0%
Cloud Cover 13% 28% 36% 18%
Conditions Clear Partly Cloudy Partly Cloudy Clear
Sunrise & Sunset
7:05 AM
5:43 PM
Source: NWS at 3:30 am EST on February 10, 2012
Regional Forecast for Fairfax
Monday
sunny Sunny. Highs in the mid 40s.
Monday Night
nt_cloudy Mostly cloudy. Lows in the lower 30s.
Hourly Forecast 6AM 12 Noon 6PM 12 Midnight
Temp. | Dew Point 25 | 11 38 | 14 38 | 17 33 | 20
Wind 4 mph WNW 7 mph WNW 3 mph West 1 mph WSW
Humidity 54% 37% 41% 58%
Chance of Precip. 0% 0% 0% 0%
Cloud Cover 7% 8% 21% 72%
Conditions Clear Clear Clear Mostly Cloudy
Sunrise & Sunset
7:04 AM
5:44 PM
Source: NWS at 3:30 am EST on February 10, 2012
Regional Forecast for Fairfax
Tuesday
cloudy Mostly cloudy. Highs in the upper 40s.
Tuesday Night
nt_cloudy Mostly cloudy. Lows in the lower 30s.
Hourly Forecast 6AM 12 Noon 6PM 12 Midnight
Temp. | Dew Point 31 | 22 43 | 26 42 | 29 37 | 31
Wind 0 mph SSW 5 mph SSW 3 mph SSW 2 mph SW
Humidity 65% 52% 59% 81%
Chance of Precip. 10% 10% 10% 10%
Cloud Cover 79% 90% 77% 71%
Conditions Mostly Cloudy Overcast Mostly Cloudy Chance of Rain
Sunrise & Sunset
7:02 AM
5:45 PM
Source: NWS at 3:30 am EST on February 10, 2012
Regional Forecast for Fairfax
Wednesday
partlysunny Partly sunny. Highs in the upper 40s.
Wednesday Night
nt_partlycloudy Partly cloudy. Lows around 30.
Hourly Forecast 6AM 12 Noon 6PM 12 Midnight
Temp. | Dew Point 34 | 31 45 | 31 44 | 32 37 | 30
Wind 2 mph West 5 mph NW 4 mph WNW 2 mph NNW
Humidity 88% 61% 65% 74%
Chance of Precip. 20% 20% 10% 10%
Cloud Cover 70% 61% 69% 61%
Conditions Chance of Snow Partly Cloudy Partly Cloudy Chance of Rain
Sunrise & Sunset
7:02 AM
5:45 PM
Source: NWS at 3:30 am EST on February 10, 2012
Regional Forecast for Fairfax
Thursday
partlysunny Partly sunny. Highs in the upper 40s.
Hourly Forecast 6AM 12 Noon 6PM 12 Midnight
Temp. | Dew Point 36 | 29 47 | 32 46 | 34 37 | 30
Wind 2 mph NW 5 mph WNW 2 mph SW 2 mph NNW
Humidity 74% 55% 60% 74%
Chance of Precip. 20% 20% 20% 10%
Cloud Cover 34% 45% 80% 61%
Conditions Chance of Rain Chance of Rain Chance of Rain Chance of Rain
Sunrise & Sunset
7:02 AM
5:45 PM
BestForecast (what's this?)
Nearby
History & Almanac
February 10, 2012 Max Temp Min Temp
Normal (KIAD) 44 °F 23 °F
Record (KIAD) 63 °F (1990) -10 °F (1979)
Yesterday 46 °F 29 °F
Yesterday's Heating Degree Days: 27
Choose a date
Earthquake Activity
City Distance Mag. Time & Date
No recent earthquake activity has been reported nearby.
Minimum magnitude displayed is 2.5.
Air Quality
  Air Quality AQ Index Pollutant
Yesterday Good
PM10
Yesterday Good
OZONE
Current Moderate
PM2.5
Current Good
OZONE
Friday Moderate
PM2.5
Saturday Good
PM2.5
Sunday Good
PM2.5
Coastal Water Temperatures
Place Temperature
Washington, DC 43.0 °F
Lewisetta, VA 43.0 °F
Solomons Island, MD 43.0 °F
Astronomy
Feb. 10, 2012 Rise Set
Actual Time 7:07 AM EST 5:41 PM EST
Civil Twilight 6:39 AM EST 6:08 PM EST
Nautical Twilight 6:08 AM EST 6:40 PM EST
Astronomical Twilight 5:37 AM EST 7:11 PM EST
Moon 9:14 PM EST 8:17 AM EST
Length Of Visible Light 11h 28m
Length of Day
10h 33m
Tomorrow will be 2m 16s longer.
Waning Gibbous, 92% of the Moon is Illuminated
Today
Waning Gibbous
Feb 14
Last Quarter
Feb 21
New
Feb 29
First Quarter
Mar 8
Full
Today's Extremes
State Highs State Lows
39 °F
Quantico
37 °F
Williamsburg
37 °F
Warrenton
37 °F
Fort Eustis
21 °F
Hot Springs
21 °F
Richlands
23 °F
Jonesville
24 °F
Blacksburg
24 °F
Lynchburg
Source: NWS
Snow Depth
Station Depth Elevation
No new snow has been reported.
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Some pics of showers and storms that moved into South West Florida.
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Travel & Activities
Travel Planning
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Aviation
City Temp. Conditions Updated
Dulles Airport 32 °F Partly Cloudy 2:52 AM EST
Manassas 30 °F Clear 3:35 AM EST
Leesburg 32 °F Clear 3:35 AM EST
Fort Belvoir 31 °F Clear 3:55 AM EST
Flight To ETA Status
FDX1434
Memphis, TN
KIAD 05:11AM On Time
VRD114
Los Angeles, CA
KIAD 05:41AM On Time
UAL238
San Diego, CA
KIAD 05:44AM On Time
UAL991
Accra
KIAD 06:00AM On Time
Flight Tracker by FlightAware FlightAware
Type Condition
Flight Rule: VFR (KIAD)
Wind Speed: 4.0 kts.
Wind Dir: 20° (NNE)
Ceiling: Unlimited

METAR KIAD 100752Z 34004KT 10SM FEW110 00/M05 A3017 RMK AO2 SLP217 T00001050

Nearby Events
Event Date Forecast
The Music Man 7:00 PM EST 2012-02-10 Chance of Rain, 43°F
Fistful of Fifties @ Old Firestation #3 9:00 PM EST 2012-02-10 Chance of Rain, 40°F
Kinsey Sicks 8:00 PM EST 2012-02-10 Chance of Rain, 42°F
Walk, Run/Walk, and Run Intervals Training 9:00 AM EST 2012-02-10 Clear, 36°F
The Nation's Gun Show 3:00 PM EST 2012-02-10 Overcast, 46°F
Gottaswing is holding a super exciting fundraiser 8:00 PM EST 2012-02-10 Chance of Rain, 42°F
Event data courtesy eviesays.com
Sports
Event Date Forecast
Budweiser Shootout 8:29 PM EST on February 18, 2012 Average High 71° F/ 21° C
Gatorade Duel 1 2:19 PM EST on February 23, 2012 Average High 70° F/ 21° C
Event Date Forecast
AT&T Pebble Beach National Pro-Am 8:30 AM PST on February 10, 2012 Partly Cloudy, 45 °F
AT&T Pebble Beach National Pro-Am 8:30 AM PST on February 11, 2012 Chance of Rain, 45 °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
Weather Stations
Station Location Temp. Windchill Dew Point Humidity Wind Precipitation Elevation Updated Type Website
Ridings at Blue Springs, Chantilly, VA 31.5 °F 32 °F 24 °F 72% NNE  at  0.0 mph 0.00 in / hr 303 ft 3:52 AM EST Normal
Chantilly, VA 27.0 °F 27 °F 24 °F 87% North  at  0.0 mph 0.00 in / hr 308 ft 3:56 AM EST Rapid Fire  
Brookfield, Chantilly, VA 32.5 °F 32 °F 7 °F 34% North  at  0.0 mph 0.00 in / hr 260 ft 3:56 AM EST Normal  
Gracie's Window in FranklinGlen, Fairfax, VA 31.7 °F 32 °F 23 °F 71% NNW  at  0.4 mph 0.00 in / hr 365 ft 3:40 AM EST Rapid Fire  
Franklin Glen/KR4YO, Fairfax, VA 31.5 °F 32 °F 23 °F 70% North  at  1.6 mph 0.00 in / hr 358 ft 3:56 AM EST Rapid Fire  
CENTREweather, Centreville, VA 31.7 °F 28 °F 23 °F 70% North  at  4.0 mph 0.00 in / hr 262 ft 3:56 AM EST Rapid Fire
Chantilly Highlands, Herndon, VA 28.9 °F 29 °F 23 °F 79% North  at  0.7 mph 0.00 in / hr 340 ft 3:56 AM EST Rapid Fire  
APRSWXNET Centreville VA , Centreville, VA 32 °F 32 °F 24 °F 71% NW  at  0 mph 0.00 in / hr 308 ft 3:27 AM EST MADIS
Centre Ridge, Centreville, VA 33.1 °F 30 °F 14 °F 44% North  at  3.1 mph 0.00 in / hr 300 ft 3:56 AM EST Rapid Fire  
Little Rocky Run, Clifton, VA 32.5 °F 32 °F 23 °F 67% NNW  at  2.0 mph 0.00 in / hr 308 ft 3:56 AM EST Rapid Fire  
Monterey Estates, Herndon, VA 32.3 °F 32 °F 23 °F 69% West  at  1.2 mph 0.00 in / hr 390 ft 3:56 AM EST Rapid Fire
Fox Mill, Herndon, VA 31.9 °F 32 °F 24 °F 73% NNE  at  0.0 mph 0.00 in / hr 383 ft 3:56 AM EST Rapid Fire  
Stone Ridge, Dulles, VA 31.5 °F 32 °F 17 °F 55% NNW  at  1.1 mph 0.00 in / hr 391 ft 3:56 AM EST Rapid Fire  
Westgate, Manassas, VA 33.7 °F 34 °F 25 °F 70% SSW  at  0.0 mph 0.00 in / hr 178 ft 3:56 AM EST Rapid Fire
Reston - West Market, Reston, VA 32.2 °F 32 °F 21 °F 64% ESE  at  0.0 mph 0.00 in / hr 430 ft 3:56 AM EST Rapid Fire  
VADOT Site_G, Herndon, VA 36 °F 33 °F 24 °F 61% West  at  4 mph 0.00 in / hr 339 ft 3:24 AM EST MADIS
Cedar Cove Cluster, Reston, VA 34.5 °F 34 °F 25 °F 67% NNW  at  0.0 mph 0.00 in / hr 350 ft 3:56 AM EST Rapid Fire  
Brambleton, Brambleton, VA 32.7 °F 33 °F 24 °F 70% North  at  1.0 mph 0.00 in / hr 310 ft 3:56 AM EST Rapid Fire  
Rosehaven Estates, Fairfax, VA 32.6 °F 33 °F 23 °F 67% NW  at  0.0 mph 0.00 in / hr 470 ft 3:43 AM EST Normal  
Golf Course Island, Reston, VA 32.4 °F 32 °F 23 °F 67% North  at  0.0 mph 0.00 in / hr 390 ft 3:56 AM EST Rapid Fire  
VADOT Site_E, Oakton, VA 36 °F 36 °F 25 °F 64% North  at  - 0.00 in / hr 353 ft 3:30 AM EST MADIS
Compass Rose Farm, Haymarket, VA 31.5 °F 28 °F 22 °F 69% NNW  at  4.0 mph 0.00 in / hr 350 ft 3:56 AM EST Rapid Fire  
Cobbdale, Fairfax, VA 32.1 °F 32 °F 20 °F 62% West  at  0.0 mph - / hr 394 ft 3:52 AM EST Normal  
Oak Valley/KT4ER, Gainesville, VA 33.1 °F 33 °F 24 °F 69% NNE  at  1.0 mph 0.00 in / hr 496 ft 3:56 AM EST Rapid Fire  
Hawk Ridge Subdivision, Reston, VA 27.8 °F 28 °F 24 °F 87% South  at  0.0 mph 0.00 in / hr 300 ft 3:50 AM EST Normal
APRSWXNET Reston VA , Herndon, VA 33 °F 33 °F 23 °F 66% NW  at  1 mph 0.00 in / hr 400 ft 3:24 AM EST MADIS
APRSWXNET Reston VA , Herndon, VA 30 °F 30 °F 25 °F 82% SSW  at  0 mph 0.00 in / hr 454 ft 3:33 AM EST MADIS
Sangsters Court, Clifton, VA 30.2 °F 25 °F 26 °F 85% NNW  at  5.0 mph 0.00 in / hr 375 ft 3:47 AM EST Normal  
Villa D'este, Fairfax, VA 30.9 °F 31 °F 24 °F 75% SSW  at  0.0 mph 0.00 in / hr 355 ft 3:54 AM EST Normal  
Falls Brook, Herndon, VA 26.1 °F 26 °F 24 °F 92% WSW  at  0.0 mph 0.00 in / hr 280 ft 3:54 AM EST Normal  
Hunt Club, Reston, VA 28.9 °F 29 °F 12 °F 49% East  at  0.0 mph 0.00 in / hr 319 ft 3:56 AM EST Rapid Fire  
Snow Hill, Haymarket, VA 31.5 °F 32 °F 23 °F 70% North  at  2.0 mph 0.00 in / hr 454 ft 3:56 AM EST Normal  
Colvin Run at Hunter Mill Rd (One Lane B, Vienna, VA 31.3 °F 31 °F 24 °F 74% WNW  at  0.0 mph 0.00 in / hr 295 ft 3:55 AM EST Normal  
Lake Fairfax, Vienna, VA 27.7 °F 28 °F 24 °F 84% West  at  0.0 mph 0.00 in / hr 275 ft 3:56 AM EST Rapid Fire
Ashburn Village, Ashburn, VA 26.8 °F 27 °F 22 °F 80% North  at  0.0 mph 0.00 in / hr 282 ft 3:56 AM EST Rapid Fire  
Broadlands, Ashburn, VA 32.8 °F 26 °F 23 °F 67% NW  at  7.0 mph 0.00 in / hr 391 ft 3:56 AM EST Rapid Fire  
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