Great Falls, Virginia
Current Conditions -  °F | °C
As of 8:52 AM on Thursday 28 Aug 2014 (Local Time) from KIAD Reporting Station
Scattered Clouds Scattered Clouds  
Wind Chill: 71°   Ceiling: Unl
Heat Index: 71°   Visibility: 10mi
Dew Point: 62°   Wind: 9mph
Humidity: 73%   Direction: 320°NW
Pressure: 30.01"   Gusts: NA
Location:  39°N, 77.29°W
Report Text: KIAD 281252Z 32008KT 10SM FEW030 SCT140 SCT250 22/17 A3001 RMK AO2 SLP159 T02170167
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Tropical Storm Tracking
Hourly Forecast -  °F | °C
Hi 85° - Lo 59°
10 AM
Sunny
Sunny
73°
11 AM
Sunny
Sunny
75°
12 PM
Sunny
Sunny
77°
1 PM
Sunny
Sunny
79°
2 PM
Sunny
Sunny
81°
3 PM
Sunny
Sunny
82°
Weather Maps
Daily Forecast -  °F | °C
thu fri sat sun mon tue wed thu fri sat
aug
28
Sunny
Sunny
85°
59°
aug
29
Sunny
Sunny
82°
65°
aug
30
AM Clouds
AM Clouds
87°
69°
aug
31
PM T-Storms
PM T-Storms
92°
70°
sep
01
Cloudy
Cloudy
83°
70°
sep
02
PM T-Storms
PM T-Storms
93°
70°
sep
03
Sct T-Storms
Sct T-Storms
87°
66°
sep
04
Sunny
Sunny
87°
63°
sep
05
Sunny
Sunny
88°
63°
sep
06
M Sunny
M Sunny
87°
63°
Details for Thursday, August 28
Sunny. High near 85F. Winds NNW at 5 to 10 mph.
Evening: Clear to partly cloudy. Low 59F. Winds N at 5 to 10 mph.
UV Index: 8 (Very High)
Ultraviolet Radiation Index
Relative Humidity: 54%
Relative Humidity
Precipitation: 0%
Probability of Precipitation
Snow: 0%
Snow
Cloud Coverage: 7%
Cloud Coverage
Sunrise: 6:34 AM
Sunset: 7:45 PM
 
Moonrise: 9:23 AM
Moonset: 9:10 PM
Moon Phase:  Waxing Crescent
Moonphase:
Waxing Crescent
Wind Direction:  NNW
Direction: NNW (332°)
Speed: 10Mph(16Km, 11Kts)
Details for Friday, August 29
Sunny skies. High 82F. Winds light and variable.
Evening: Clear to partly cloudy. Low near 65F. Winds light and variable.
UV Index: 8 (Very High)
Ultraviolet Radiation Index
Relative Humidity: 56%
Relative Humidity
Precipitation: 0%
Probability of Precipitation
Snow: 0%
Snow
Cloud Coverage: 21%
Cloud Coverage
Sunrise: 6:35 AM
Sunset: 7:44 PM
 
Moonrise: 10:20 AM
Moonset: 9:42 PM
Moon Phase:  Waxing Crescent
Moonphase:
Waxing Crescent
Wind Direction:  E
Direction: E (92°)
Speed: 5Mph(8Km, 5Kts)
Details for Saturday, August 30
Morning clouds followed by afternoon sun. Highs in the upper 80s and lows in the upper 60s.
UV Index: 6 (High)
Ultraviolet Radiation Index
Relative Humidity: 75%
Relative Humidity
Precipitation: 10%
Probability of Precipitation
Snow: 0%
Snow
Cloud Coverage: 66%
Cloud Coverage
Sunrise: 6:36 AM
Sunset: 7:42 PM
 
Moonrise: 11:18 AM
Moonset: 10:17 PM
Moon Phase:  Waxing Crescent
Moonphase:
Waxing Crescent
Wind Direction:  SSE
Direction: SSE (155°)
Speed: 9Mph(14Km, 10Kts)
Details for Sunday, August 31
Thunderstorms developing in the afternoon. Highs in the low 90s and lows in the low 70s.
UV Index: 7 (High)
Ultraviolet Radiation Index
Relative Humidity: 67%
Relative Humidity
Precipitation: 80%
Probability of Precipitation
Snow: 0%
Snow
Cloud Coverage: 48%
Cloud Coverage
Sunrise: 6:37 AM
Sunset: 7:41 PM
 
Moonrise: 12:17 PM
Moonset: 10:57 PM
Moon Phase:  Waxing Crescent
Moonphase:
Waxing Crescent
Wind Direction:  SW
Direction: SW (228°)
Speed: 7Mph(11Km, 8Kts)
Details for Monday, September 01
Cloudy. Highs in the low 80s and lows in the low 70s.
UV Index: 5 (Moderate)
Ultraviolet Radiation Index
Relative Humidity: 77%
Relative Humidity
Precipitation: 20%
Probability of Precipitation
Snow: 0%
Snow
Cloud Coverage: 79%
Cloud Coverage
Sunrise: 6:37 AM
Sunset: 7:39 PM
 
Moonrise: 1:17 PM
Moonset: 11:42 PM
Moon Phase:  Waxing Crescent
Moonphase:
Waxing Crescent
Wind Direction:  WSW
Direction: WSW (238°)
Speed: 5Mph(8Km, 6Kts)
Details for Tuesday, September 02
Afternoon thunderstorms. Highs in the low 90s and lows in the low 70s.
UV Index: 8 (Very High)
Ultraviolet Radiation Index
Relative Humidity: 65%
Relative Humidity
Precipitation: 50%
Probability of Precipitation
Snow: 0%
Snow
Cloud Coverage: 29%
Cloud Coverage
Sunrise: 6:38 AM
Sunset: 7:38 PM
 
Moonrise: 2:16 PM
Moonset: 12:01 AM
Moon Phase:  First Quarter
Moonphase:
First Quarter
Wind Direction:  W
Direction: W (269°)
Speed: 7Mph(11Km, 8Kts)
Details for Wednesday, September 03
A few thunderstorms possible. Highs in the upper 80s and lows in the mid 60s.
UV Index: 8 (Very High)
Ultraviolet Radiation Index
Relative Humidity: 64%
Relative Humidity
Precipitation: 50%
Probability of Precipitation
Snow: 0%
Snow
Cloud Coverage: 38%
Cloud Coverage
Sunrise: 6:39 AM
Sunset: 7:36 PM
 
Moonrise: 3:14 PM
Moonset: 12:33 AM
Moon Phase:  Waxing Gibbous
Moonphase:
Waxing Gibbous
Wind Direction:  NW
Direction: NW (309°)
Speed: 6Mph(10Km, 7Kts)
Details for Thursday, September 04
Mainly sunny. Highs in the upper 80s and lows in the low 60s.
UV Index: 8 (Very High)
Ultraviolet Radiation Index
Relative Humidity: 62%
Relative Humidity
Precipitation: 10%
Probability of Precipitation
Snow: 0%
Snow
Cloud Coverage: 8%
Cloud Coverage
Sunrise: 6:40 AM
Sunset: 7:35 PM
 
Moonrise: 4:08 PM
Moonset: 1:31 AM
Moon Phase:  Waxing Gibbous
Moonphase:
Waxing Gibbous
Wind Direction:  NNE
Direction: NNE (12°)
Speed: 6Mph(9Km, 7Kts)
Details for Friday, September 05
Sunshine. Highs in the upper 80s and lows in the low 60s.
UV Index: 8 (Very High)
Ultraviolet Radiation Index
Relative Humidity: 62%
Relative Humidity
Precipitation: 10%
Probability of Precipitation
Snow: 0%
Snow
Cloud Coverage: 14%
Cloud Coverage
Sunrise: 6:41 AM
Sunset: 7:33 PM
 
Moonrise: 4:58 PM
Moonset: 2:34 AM
Moon Phase:  Waxing Gibbous
Moonphase:
Waxing Gibbous
Wind Direction:  SE
Direction: SE (140°)
Speed: 5Mph(9Km, 6Kts)
Details for Saturday, September 06
Plenty of sun. Highs in the upper 80s and lows in the low 60s.
UV Index: 8 (Very High)
Ultraviolet Radiation Index
Relative Humidity: 60%
Relative Humidity
Precipitation: 10%
Probability of Precipitation
Snow: 0%
Snow
Cloud Coverage: 16%
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:  ESE
Direction: ESE (120°)
Speed: 5Mph(8Km, 6Kts)
Daily Forecast Chart
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