Herndon, Virginia
Current Conditions -  °F | °C
As of 6:52 AM on Thursday 31 Jul 2014 (Local Time) from KIAD Reporting Station
Few Clouds Few Clouds  
Wind Chill: 60°   Ceiling: Unl
Heat Index: 60°   Visibility: 10mi
Dew Point: 57°   Wind: 0mph
Humidity: 90%   Direction: NA
Pressure: 30.1"   Gusts: NA
Location:  38.97°N, 77.38°W
Report Text: KIAD 311052Z 00000KT 10SM FEW120 16/14 A3010 RMK AO2 SLP189 T01560139
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Tropical Storm Tracking
Hourly Forecast -  °F | °C
Hi 86° - Lo 66°
8 AM
M Sunny
M Sunny
64°
9 AM
Sunny
Sunny
69°
10 AM
Sunny
Sunny
73°
11 AM
Sunny
Sunny
78°
12 PM
Sunny
Sunny
80°
1 PM
M Sunny
M Sunny
82°
Weather Maps
Daily Forecast -  °F | °C
thu fri sat sun mon tue wed thu fri sat
jul
31
M Sunny
M Sunny
86°
66°
aug
01
Sct T-Storms
Sct T-Storms
79°
65°
aug
02
Rain
Rain
80°
65°
aug
03
Sct T-Storms
Sct T-Storms
80°
65°
aug
04
P Cloudy
P Cloudy
86°
65°
aug
05
P Cloudy
P Cloudy
88°
65°
aug
06
M Sunny
M Sunny
87°
65°
aug
07
PM T-Storms
PM T-Storms
86°
64°
aug
08
Rain
Rain
79°
64°
aug
09
Showers
Showers
81°
65°
Details for Thursday, July 31
Mostly sunny. High 86F. Winds SW at 5 to 10 mph.
Evening: Partly cloudy skies this evening will become overcast overnight. Low 66F. Winds S at 5 to 10 mph.
UV Index: 9 (Very High)
Ultraviolet Radiation Index
Relative Humidity: 56%
Relative Humidity
Precipitation: 0%
Probability of Precipitation
Snow: 0%
Snow
Cloud Coverage: 26%
Cloud Coverage
Sunrise: 6:09 AM
Sunset: 8:21 PM
 
Moonrise: 10:32 AM
Moonset: 10:36 PM
Moon Phase:  Waxing Crescent
Moonphase:
Waxing Crescent
Wind Direction:  SW
Direction: SW (229°)
Speed: 8Mph(13Km, 9Kts)
Details for Friday, August 01
Mixed clouds and sun with scattered thunderstorms. High 79F. Winds S at 5 to 10 mph. Chance of rain 40%.
Evening: Scattered showers and thunderstorms. Low near 65F. Winds ENE at 5 to 10 mph. Chance of rain 40%.
UV Index: 4 (Moderate)
Ultraviolet Radiation Index
Relative Humidity: 76%
Relative Humidity
Precipitation: 40%
Probability of Precipitation
Snow: 0%
Snow
Cloud Coverage: 97%
Cloud Coverage
Sunrise: 6:10 AM
Sunset: 8:20 PM
 
Moonrise: 11:29 AM
Moonset: 11:07 PM
Moon Phase:  Waxing Crescent
Moonphase:
Waxing Crescent
Wind Direction:  S
Direction: S (177°)
Speed: 8Mph(13Km, 10Kts)
Details for Saturday, August 02
Cloudy, periods of rain. Highs in the low 80s and lows in the mid 60s.
UV Index: 6 (High)
Ultraviolet Radiation Index
Relative Humidity: 74%
Relative Humidity
Precipitation: 70%
Probability of Precipitation
Snow: 0%
Snow
Cloud Coverage: 86%
Cloud Coverage
Sunrise: 6:11 AM
Sunset: 8:19 PM
 
Moonrise: 12:27 PM
Moonset: 11:41 PM
Moon Phase:  Waxing Crescent
Moonphase:
Waxing Crescent
Wind Direction:  NE
Direction: NE (49°)
Speed: 8Mph(14Km, 10Kts)
Details for Sunday, August 03
A few thunderstorms possible. Highs in the low 80s and lows in the mid 60s.
UV Index: 6 (High)
Ultraviolet Radiation Index
Relative Humidity: 77%
Relative Humidity
Precipitation: 40%
Probability of Precipitation
Snow: 0%
Snow
Cloud Coverage: 76%
Cloud Coverage
Sunrise: 6:12 AM
Sunset: 8:18 PM
 
Moonrise: 1:26 PM
Moonset: 12:01 AM
Moon Phase:  First Quarter
Moonphase:
First Quarter
Wind Direction:  ESE
Direction: ESE (107°)
Speed: 6Mph(9Km, 6Kts)
Details for Monday, August 04
Partly cloudy. Highs in the mid 80s and lows in the mid 60s.
UV Index: 9 (Very High)
Ultraviolet Radiation Index
Relative Humidity: 69%
Relative Humidity
Precipitation: 20%
Probability of Precipitation
Snow: 0%
Snow
Cloud Coverage: 51%
Cloud Coverage
Sunrise: 6:13 AM
Sunset: 8:17 PM
 
Moonrise: 2:27 PM
Moonset: 12:17 AM
Moon Phase:  Waxing Gibbous
Moonphase:
Waxing Gibbous
Wind Direction:  W
Direction: W (272°)
Speed: 6Mph(9Km, 6Kts)
Details for Tuesday, August 05
Times of sun and clouds. Highs in the upper 80s and lows in the mid 60s.
UV Index: 9 (Very High)
Ultraviolet Radiation Index
Relative Humidity: 63%
Relative Humidity
Precipitation: 10%
Probability of Precipitation
Snow: 0%
Snow
Cloud Coverage: 44%
Cloud Coverage
Sunrise: 6:14 AM
Sunset: 8:16 PM
 
Moonrise: 3:29 PM
Moonset: 1:00 AM
Moon Phase:  Waxing Gibbous
Moonphase:
Waxing Gibbous
Wind Direction:  WNW
Direction: WNW (293°)
Speed: 5Mph(9Km, 6Kts)
Details for Wednesday, August 06
More sun than clouds. Highs in the upper 80s and lows in the mid 60s.
UV Index: 9 (Very High)
Ultraviolet Radiation Index
Relative Humidity: 60%
Relative Humidity
Precipitation: 0%
Probability of Precipitation
Snow: 0%
Snow
Cloud Coverage: 24%
Cloud Coverage
Sunrise: 6:14 AM
Sunset: 8:15 PM
 
Moonrise: 4:29 PM
Moonset: 1:49 AM
Moon Phase:  Waxing Gibbous
Moonphase:
Waxing Gibbous
Wind Direction:  NW
Direction: NW (308°)
Speed: 6Mph(10Km, 7Kts)
Details for Thursday, August 07
Afternoon thunderstorms. Highs in the mid 80s and lows in the mid 60s.
UV Index: 9 (Very High)
Ultraviolet Radiation Index
Relative Humidity: 69%
Relative Humidity
Precipitation: 40%
Probability of Precipitation
Snow: 0%
Snow
Cloud Coverage: 35%
Cloud Coverage
Sunrise: 6:15 AM
Sunset: 8:14 PM
 
Moonrise: 5:28 PM
Moonset: 2:44 AM
Moon Phase:  Waxing Gibbous
Moonphase:
Waxing Gibbous
Wind Direction:  WSW
Direction: WSW (255°)
Speed: 7Mph(11Km, 8Kts)
Details for Friday, August 08
Cloudy with rain. Highs in the upper 70s and lows in the mid 60s.
UV Index: 7 (High)
Ultraviolet Radiation Index
Relative Humidity: 72%
Relative Humidity
Precipitation: 60%
Probability of Precipitation
Snow: 0%
Snow
Cloud Coverage: 71%
Cloud Coverage
Sunrise: 6:16 AM
Sunset: 8:13 PM
 
Moonrise: 6:22 PM
Moonset: 3:48 AM
Moon Phase:  Waxing Gibbous
Moonphase:
Waxing Gibbous
Wind Direction:  ESE
Direction: ESE (107°)
Speed: 9Mph(15Km, 11Kts)
Details for Saturday, August 09
Showers possible. Highs in the low 80s and lows in the mid 60s.
UV Index: 7 (High)
Ultraviolet Radiation Index
Relative Humidity: 70%
Relative Humidity
Precipitation: 60%
Probability of Precipitation
Snow: 0%
Snow
Cloud Coverage: 74%
Cloud Coverage
Sunrise: 6:17 AM
Sunset: 8:11 PM
 
Moonrise: 7:12 PM
Moonset: 4:56 AM
Moon Phase:  Waxing Gibbous
Moonphase:
Waxing Gibbous
Wind Direction:  SSW
Direction: SSW (204°)
Speed: 9Mph(14Km, 10Kts)
Daily Forecast Chart
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