Herndon, Virginia
Current Conditions -  °F | °C
As of 5:52 AM on Friday 29 Aug 2014 (Local Time) from KIAD Reporting Station
Scattered Clouds Scattered Clouds  
Wind Chill: 58°   Ceiling: Unl
Heat Index: 58°   Visibility: 10mi
Dew Point: 53°   Wind: 3mph
Humidity: 84%   Direction: 350°N
Pressure: 30.16"   Gusts: NA
Location:  38.97°N, 77.38°W
Report Text: KIAD 290952Z 35003KT 10SM FEW035 SCT250 14/12 A3016 RMK AO2 SLP212 T01440117
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Tropical Storm Tracking
Hourly Forecast -  °F | °C
Hi 82° - Lo 62°
7 AM
Sunny
Sunny
56°
8 AM
Sunny
Sunny
56°
9 AM
Sunny
Sunny
59°
10 AM
Sunny
Sunny
63°
11 AM
Sunny
Sunny
68°
12 PM
Sunny
Sunny
72°
Weather Maps
Daily Forecast -  °F | °C
fri sat sun mon tue wed thu fri sat sun
aug
29
M Sunny
M Sunny
82°
62°
aug
30
P Cloudy
P Cloudy
86°
70°
aug
31
P Cloudy
P Cloudy
92°
71°
sep
01
PM T-Storms
PM T-Storms
88°
70°
sep
02
P Cloudy
P Cloudy
94°
72°
sep
03
P Cloudy
P Cloudy
91°
68°
sep
04
Sunny
Sunny
89°
68°
sep
05
M Sunny
M Sunny
91°
66°
sep
06
PM T-Storms
PM T-Storms
89°
66°
sep
07
Showers
Showers
84°
63°
Details for Friday, August 29
Plenty of sunshine. High 82F. Winds light and variable.
Evening: Mainly clear skies. Low 62F. Winds light and variable.
UV Index: 8 (Very High)
Ultraviolet Radiation Index
Relative Humidity: 57%
Relative Humidity
Precipitation: 0%
Probability of Precipitation
Snow: 0%
Snow
Cloud Coverage: 15%
Cloud Coverage
Sunrise: 6:35 AM
Sunset: 7:44 PM
 
Moonrise: 10:20 AM
Moonset: 9:43 PM
Moon Phase:  Waxing Crescent
Moonphase:
Waxing Crescent
Wind Direction:  NE
Direction: NE (49°)
Speed: 5Mph(8Km, 6Kts)
Details for Saturday, August 30
Intervals of clouds and sunshine. High 86F. Winds SSE at 5 to 10 mph.
Evening: Clear skies with a few passing clouds. Low around 70F. Winds SSE at 5 to 10 mph.
UV Index: 8 (Very High)
Ultraviolet Radiation Index
Relative Humidity: 74%
Relative Humidity
Precipitation: 10%
Probability of Precipitation
Snow: 0%
Snow
Cloud Coverage: 38%
Cloud Coverage
Sunrise: 6:36 AM
Sunset: 7:43 PM
 
Moonrise: 11:19 AM
Moonset: 10:18 PM
Moon Phase:  Waxing Crescent
Moonphase:
Waxing Crescent
Wind Direction:  SSE
Direction: SSE (161°)
Speed: 9Mph(15Km, 11Kts)
Details for Sunday, August 31
Partly cloudy. Highs in the low 90s and lows in the low 70s.
UV Index: 7 (High)
Ultraviolet Radiation Index
Relative Humidity: 70%
Relative Humidity
Precipitation: 20%
Probability of Precipitation
Snow: 0%
Snow
Cloud Coverage: 55%
Cloud Coverage
Sunrise: 6:37 AM
Sunset: 7:41 PM
 
Moonrise: 12:18 PM
Moonset: 10:58 PM
Moon Phase:  Waxing Crescent
Moonphase:
Waxing Crescent
Wind Direction:  SSW
Direction: SSW (201°)
Speed: 11Mph(17Km, 12Kts)
Details for Monday, September 01
Showers and thunderstorms late. Highs in the upper 80s and lows in the low 70s.
UV Index: 5 (Moderate)
Ultraviolet Radiation Index
Relative Humidity: 72%
Relative Humidity
Precipitation: 60%
Probability of Precipitation
Snow: 0%
Snow
Cloud Coverage: 63%
Cloud Coverage
Sunrise: 6:38 AM
Sunset: 7:40 PM
 
Moonrise: 1:18 PM
Moonset: 11:43 PM
Moon Phase:  Waxing Crescent
Moonphase:
Waxing Crescent
Wind Direction:  WSW
Direction: WSW (256°)
Speed: 6Mph(10Km, 7Kts)
Details for Tuesday, September 02
Mix of sun and clouds. Highs in the mid 90s and lows in the low 70s.
UV Index: 8 (Very High)
Ultraviolet Radiation Index
Relative Humidity: 67%
Relative Humidity
Precipitation: 10%
Probability of Precipitation
Snow: 0%
Snow
Cloud Coverage: 29%
Cloud Coverage
Sunrise: 6:39 AM
Sunset: 7:38 PM
 
Moonrise: 2:17 PM
Moonset: 12:01 AM
Moon Phase:  First Quarter
Moonphase:
First Quarter
Wind Direction:  W
Direction: W (260°)
Speed: 7Mph(11Km, 8Kts)
Details for Wednesday, September 03
Partly cloudy. Highs in the low 90s and lows in the upper 60s.
UV Index: 8 (Very High)
Ultraviolet Radiation Index
Relative Humidity: 65%
Relative Humidity
Precipitation: 0%
Probability of Precipitation
Snow: 0%
Snow
Cloud Coverage: 39%
Cloud Coverage
Sunrise: 6:40 AM
Sunset: 7:37 PM
 
Moonrise: 3:15 PM
Moonset: 12:33 AM
Moon Phase:  Waxing Gibbous
Moonphase:
Waxing Gibbous
Wind Direction:  WNW
Direction: WNW (301°)
Speed: 8Mph(12Km, 9Kts)
Details for Thursday, September 04
Sunshine. Highs in the upper 80s and lows in the upper 60s.
UV Index: 8 (Very High)
Ultraviolet Radiation Index
Relative Humidity: 58%
Relative Humidity
Precipitation: 20%
Probability of Precipitation
Snow: 0%
Snow
Cloud Coverage: 18%
Cloud Coverage
Sunrise: 6:41 AM
Sunset: 7:35 PM
 
Moonrise: 4:09 PM
Moonset: 1:31 AM
Moon Phase:  Waxing Gibbous
Moonphase:
Waxing Gibbous
Wind Direction:  NW
Direction: NW (322°)
Speed: 6Mph(10Km, 7Kts)
Details for Friday, September 05
More sun than clouds. Highs in the low 90s and lows in the mid 60s.
UV Index: 8 (Very High)
Ultraviolet Radiation Index
Relative Humidity: 61%
Relative Humidity
Precipitation: 10%
Probability of Precipitation
Snow: 0%
Snow
Cloud Coverage: 22%
Cloud Coverage
Sunrise: 6:42 AM
Sunset: 7:34 PM
 
Moonrise: 4:59 PM
Moonset: 2:35 AM
Moon Phase:  Waxing Gibbous
Moonphase:
Waxing Gibbous
Wind Direction:  NW
Direction: NW (307°)
Speed: 5Mph(9Km, 6Kts)
Details for Saturday, September 06
Afternoon showers and thunderstorms. Highs in the upper 80s and lows in the mid 60s.
UV Index: 8 (Very High)
Ultraviolet Radiation Index
Relative Humidity: 66%
Relative Humidity
Precipitation: 80%
Probability of Precipitation
Snow: 0%
Snow
Cloud Coverage: 29%
Cloud Coverage
Sunrise: 6:42 AM
Sunset: 7:32 PM
 
Moonrise: 5:45 PM
Moonset: 3:44 AM
Moon Phase:  Waxing Gibbous
Moonphase:
Waxing Gibbous
Wind Direction:  WNW
Direction: WNW (298°)
Speed: 6Mph(10Km, 7Kts)
Details for Sunday, September 07
Showers possible. Highs in the mid 80s and lows in the low 60s.
UV Index: 6 (High)
Ultraviolet Radiation Index
Relative Humidity: 70%
Relative Humidity
Precipitation: 60%
Probability of Precipitation
Snow: 0%
Snow
Cloud Coverage: 67%
Cloud Coverage
Sunrise: 6:43 AM
Sunset: 7:31 PM
 
Moonrise: 6:28 PM
Moonset: 4:55 AM
Moon Phase:  Waxing Gibbous
Moonphase:
Waxing Gibbous
Wind Direction:  ENE
Direction: ENE (68°)
Speed: 6Mph(10Km, 7Kts)
Daily Forecast Chart
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