Potomac, Maryland
Current Conditions -  °F | °C
As of 4:35 AM on Wednesday 20 Aug 2014 (Local Time) from KGAI Reporting Station
Broken Clouds Broken Clouds  
Wind Chill: 66°   Ceiling: 4900
Heat Index: 66°   Visibility: 10mi
Dew Point: 64°   Wind: 0mph
Humidity: 94%   Direction: NA
Pressure: 29.97"   Gusts: NA
Location:  39.02°N, 77.21°W
Report Text: KGAI 200835Z AUTO 00000KT 10SM BKN049 BKN055 BKN100 19/18 A2997 RMK AO1
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Tropical Storm Tracking
Hourly Forecast -  °F | °C
Hi 88° - Lo 67°
5 AM
M Clear
M Clear
69°
6 AM
M Clear
M Clear
68°
7 AM
M Sunny
M Sunny
68°
8 AM
M Sunny
M Sunny
70°
9 AM
Sunny
Sunny
73°
10 AM
Sunny
Sunny
76°
Weather Maps
Daily Forecast -  °F | °C
wed thu fri sat sun mon tue wed thu fri
aug
20
M Sunny
M Sunny
88°
67°
aug
21
P Cloudy
P Cloudy
87°
69°
aug
22
Sct T-Storms
Sct T-Storms
84°
67°
aug
23
Showers
Showers
77°
64°
aug
24
AM T-Storms
AM T-Storms
76°
61°
aug
25
M Cloudy
M Cloudy
79°
63°
aug
26
P Cloudy
P Cloudy
83°
65°
aug
27
P Cloudy
P Cloudy
85°
67°
aug
28
PM T-Storms
PM T-Storms
87°
65°
aug
29
PM T-Storms
PM T-Storms
84°
64°
Details for Wednesday, August 20
Mainly sunny to start, then a few afternoon clouds. High 88F. Winds SSE at 5 to 10 mph.
Evening: Scattered showers and thunderstorms. Low 67F. Winds SSE at 5 to 10 mph. Chance of rain 40%.
UV Index: 9 (Very High)
Ultraviolet Radiation Index
Relative Humidity: 60%
Relative Humidity
Precipitation: 10%
Probability of Precipitation
Snow: 0%
Snow
Cloud Coverage: 18%
Cloud Coverage
Sunrise: 6:26 AM
Sunset: 7:56 PM
 
Moonrise: 2:05 AM
Moonset: 4:38 PM
Moon Phase:  Waning Crescent
Moonphase:
Waning Crescent
Wind Direction:  SSE
Direction: SSE (153°)
Speed: 8Mph(13Km, 9Kts)
Details for Thursday, August 21
Partly cloudy. A stray shower or thunderstorm is possible. High 87F. Winds light and variable.
Evening: Scattered thunderstorms. Low 69F. Winds light and variable. Chance of rain 40%.
UV Index: 8 (Very High)
Ultraviolet Radiation Index
Relative Humidity: 72%
Relative Humidity
Precipitation: 20%
Probability of Precipitation
Snow: 0%
Snow
Cloud Coverage: 42%
Cloud Coverage
Sunrise: 6:27 AM
Sunset: 7:55 PM
 
Moonrise: 2:56 AM
Moonset: 5:21 PM
Moon Phase:  Waning Crescent
Moonphase:
Waning Crescent
Wind Direction:  SW
Direction: SW (231°)
Speed: 6Mph(9Km, 6Kts)
Details for Friday, August 22
Scattered thunderstorms. Highs in the mid 80s and lows in the upper 60s.
UV Index: 5 (Moderate)
Ultraviolet Radiation Index
Relative Humidity: 80%
Relative Humidity
Precipitation: 50%
Probability of Precipitation
Snow: 0%
Snow
Cloud Coverage: 86%
Cloud Coverage
Sunrise: 6:28 AM
Sunset: 7:53 PM
 
Moonrise: 3:50 AM
Moonset: 6:00 PM
Moon Phase:  Waning Crescent
Moonphase:
Waning Crescent
Wind Direction:  E
Direction: E (96°)
Speed: 7Mph(11Km, 8Kts)
Details for Saturday, August 23
Showers possible. Highs in the upper 70s and lows in the mid 60s.
UV Index: 6 (High)
Ultraviolet Radiation Index
Relative Humidity: 83%
Relative Humidity
Precipitation: 50%
Probability of Precipitation
Snow: 0%
Snow
Cloud Coverage: 82%
Cloud Coverage
Sunrise: 6:28 AM
Sunset: 7:52 PM
 
Moonrise: 4:44 AM
Moonset: 6:35 PM
Moon Phase:  Waning Crescent
Moonphase:
Waning Crescent
Wind Direction:  ENE
Direction: ENE (67°)
Speed: 8Mph(13Km, 10Kts)
Details for Sunday, August 24
Thunderstorms early. Highs in the mid 70s and lows in the low 60s.
UV Index: 7 (High)
Ultraviolet Radiation Index
Relative Humidity: 73%
Relative Humidity
Precipitation: 40%
Probability of Precipitation
Snow: 0%
Snow
Cloud Coverage: 53%
Cloud Coverage
Sunrise: 6:29 AM
Sunset: 7:51 PM
 
Moonrise: 5:39 AM
Moonset: 7:08 PM
Moon Phase:  Waning Crescent
Moonphase:
Waning Crescent
Wind Direction:  E
Direction: E (79°)
Speed: 7Mph(12Km, 8Kts)
Details for Monday, August 25
Mostly cloudy. Highs in the upper 70s and lows in the low 60s.
UV Index: 5 (Moderate)
Ultraviolet Radiation Index
Relative Humidity: 73%
Relative Humidity
Precipitation: 20%
Probability of Precipitation
Snow: 0%
Snow
Cloud Coverage: 60%
Cloud Coverage
Sunrise: 6:30 AM
Sunset: 7:49 PM
 
Moonrise: 6:34 AM
Moonset: 7:39 PM
Moon Phase:  New
Moonphase:
New
Wind Direction:  E
Direction: E (99°)
Speed: 7Mph(12Km, 8Kts)
Details for Tuesday, August 26
Mix of sun and clouds. Highs in the low 80s and lows in the mid 60s.
UV Index: 7 (High)
Ultraviolet Radiation Index
Relative Humidity: 70%
Relative Humidity
Precipitation: 10%
Probability of Precipitation
Snow: 0%
Snow
Cloud Coverage: 48%
Cloud Coverage
Sunrise: 6:31 AM
Sunset: 7:48 PM
 
Moonrise: 7:30 AM
Moonset: 8:09 PM
Moon Phase:  New
Moonphase:
New
Wind Direction:  ESE
Direction: ESE (119°)
Speed: 6Mph(10Km, 7Kts)
Details for Wednesday, August 27
Mix of sun and clouds. Highs in the mid 80s and lows in the upper 60s.
UV Index: 7 (High)
Ultraviolet Radiation Index
Relative Humidity: 72%
Relative Humidity
Precipitation: 10%
Probability of Precipitation
Snow: 0%
Snow
Cloud Coverage: 32%
Cloud Coverage
Sunrise: 6:32 AM
Sunset: 7:46 PM
 
Moonrise: 8:25 AM
Moonset: 8:38 PM
Moon Phase:  Waxing Crescent
Moonphase:
Waxing Crescent
Wind Direction:  S
Direction: S (178°)
Speed: 7Mph(11Km, 8Kts)
Details for Thursday, August 28
Thunderstorms developing in the afternoon. Highs in the upper 80s and lows in the mid 60s.
UV Index: 8 (Very High)
Ultraviolet Radiation Index
Relative Humidity: 69%
Relative Humidity
Precipitation: 50%
Probability of Precipitation
Snow: 0%
Snow
Cloud Coverage: 40%
Cloud Coverage
Sunrise: 6:33 AM
Sunset: 7:45 PM
 
Moonrise: 9:22 AM
Moonset: 9:09 PM
Moon Phase:  Waxing Crescent
Moonphase:
Waxing Crescent
Wind Direction:  SW
Direction: SW (230°)
Speed: 8Mph(13Km, 9Kts)
Details for Friday, August 29
Afternoon thunderstorms. Highs in the mid 80s and lows in the mid 60s.
UV Index: 8 (Very High)
Ultraviolet Radiation Index
Relative Humidity: 69%
Relative Humidity
Precipitation: 80%
Probability of Precipitation
Snow: 0%
Snow
Cloud Coverage: 36%
Cloud Coverage
Sunrise: 6:34 AM
Sunset: 7:43 PM
 
Moonrise: 10:19 AM
Moonset: 9:42 PM
Moon Phase:  Waxing Crescent
Moonphase:
Waxing Crescent
Wind Direction:  NW
Direction: NW (310°)
Speed: 5Mph(9Km, 6Kts)
Daily Forecast Chart
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