History for Fort Belvoir, VA

Monday, December 10, 2012 View Current Conditions
Monday, December 10, 2012
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  Actual Average Record
Temperature
Mean Temperature 56 °F -  
Max Temperature 64 °F 48 °F 66 °F (2008)
Min Temperature 49 °F 31 °F 20 °F (2010)
Degree Days
Heating Degree Days 8    
Growing Degree Days 6 (Base 50)    
Moisture
Dew Point 52 °F    
Average Humidity 98    
Maximum Humidity 100    
Minimum Humidity 76    
Precipitation
Precipitation 0.00 in - - ()
Sea Level Pressure
Sea Level Pressure 29.82 in    
Wind
Wind Speed 1 mph (SSE)    
Max Wind Speed 8 mph    
Max Gust Speed -    
Visibility 3 miles    
Events Fog , Rain    
Averages and records for this station are not official NWS values.
T = Trace of Precipitation, MM = Missing Value Source: NWS Daily Summary
Daily Graph
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Astronomy
May. 25, 2013 Rise Set
Actual Time 7:16 AM EST 4:47 PM EST
Civil Twilight 6:46 AM EST 5:16 PM EST
Nautical Twilight 6:13 AM EST 5:50 PM EST
Astronomical Twilight 5:40 AM EST 6:22 PM EST
Moon 3:58 AM EST (12/10) 2:33 PM EST (12/10)
Length Of Visible Light 10h 30m
Length of Day
9h 30m
Waning Crescent, 10% of the Moon is Illuminated
Dec 10
Waning Crescent
Dec 13
New
Dec 20
First Quarter
Dec 28
Full
Jan 4
Last Quarter
Hourly Observations
Time (EST) Temp. Dew Point Humidity Pressure Visibility Wind Dir Wind Speed Gust Speed Precip Events Conditions
12:02 AM 50.0 °F 50.0 °F 100% 30.00 in 0.5 mi Calm Calm - N/A Fog , Rain Light Rain
12:05 AM 50.0 °F 50.0 °F 100% 30.00 in 0.5 mi Calm Calm - N/A Fog , Rain Light Rain
12:12 AM 50.0 °F 50.0 °F 100% 29.99 in 0.5 mi Calm Calm - N/A Fog Fog
12:34 AM 50.0 °F 50.0 °F 100% 29.97 in 0.8 mi ESE 3.5 mph - N/A   Mist
12:51 AM 50.0 °F 50.0 °F 100% 29.97 in 0.5 mi Calm Calm - N/A Fog Fog
12:55 AM 49.5 °F 49.3 °F 99% 29.96 in 0.5 mi Calm Calm - 0.00 in Fog Fog
1:53 AM 50.0 °F 50.0 °F 100% 29.94 in 0.5 mi Calm Calm - N/A Fog Fog
1:55 AM 49.3 °F 49.3 °F 100% 29.94 in 0.5 mi Calm Calm - N/A Fog Fog
2:11 AM 50.0 °F 50.0 °F 100% 29.94 in 0.5 mi Calm Calm - N/A Fog Fog
2:22 AM 50.0 °F 50.0 °F 100% 29.94 in 0.8 mi Calm Calm - N/A   Mist
2:55 AM 49.5 °F 49.5 °F 100% 29.93 in 0.8 mi Calm Calm - N/A   Mist
3:02 AM 50.0 °F 50.0 °F 100% 29.92 in 0.5 mi Calm Calm - N/A Fog Fog
3:09 AM 50.0 °F 50.0 °F 100% 29.91 in 0.8 mi SE 3.5 mph - N/A   Mist
3:11 AM 50.0 °F 50.0 °F 100% 29.91 in 0.8 mi Calm Calm - N/A   Mist
3:19 AM 50.0 °F 50.0 °F 100% 29.91 in 1.0 mi SE 3.5 mph - N/A   Mist
3:26 AM 50.0 °F 50.0 °F 100% 29.90 in 1.0 mi Calm Calm - N/A   Mist
3:30 AM 50.0 °F 50.0 °F 100% 29.90 in 1.2 mi Calm Calm - N/A   Overcast
3:34 AM 50.0 °F 50.0 °F 100% 29.90 in 1.5 mi Calm Calm - N/A   Overcast
3:35 AM 50.0 °F 50.0 °F 100% 29.90 in 1.5 mi Calm Calm - N/A   Overcast
3:40 AM 50.0 °F 50.0 °F 100% 29.90 in 1.8 mi Calm Calm - N/A   Overcast
3:49 AM 50.0 °F 50.0 °F 100% 29.89 in 1.8 mi Calm Calm - N/A   Overcast
3:50 AM 50.0 °F 50.0 °F 100% 29.89 in 1.5 mi Calm Calm - N/A   Overcast
3:55 AM 49.5 °F 49.5 °F 100% 29.89 in 1.5 mi Calm Calm - N/A   Overcast
3:56 AM 50.0 °F 50.0 °F 100% 29.89 in 1.2 mi Calm Calm - N/A   Overcast
3:58 AM 50.0 °F 50.0 °F 100% 29.88 in 1.2 mi Calm Calm - N/A   Overcast
3:59 AM 50.0 °F 50.0 °F 100% 29.89 in 1.2 mi Calm Calm - N/A   Overcast
4:07 AM 50.0 °F 50.0 °F 100% 29.88 in 1.0 mi Calm Calm - N/A   Mist
4:09 AM 50.0 °F 50.0 °F 100% 29.88 in 1.0 mi Calm Calm - N/A   Mist
4:15 AM 50.0 °F 50.0 °F 100% 29.88 in 0.8 mi Calm Calm - N/A   Mist
4:16 AM 50.0 °F 50.0 °F 100% 29.88 in 0.8 mi Calm Calm - N/A   Mist
4:19 AM 50.0 °F 50.0 °F 100% 29.88 in 0.8 mi Calm Calm - N/A   Mist
4:20 AM 50.0 °F 50.0 °F 100% 29.88 in 0.8 mi Calm Calm - N/A   Mist
4:38 AM 50.0 °F 50.0 °F 100% 29.87 in 0.5 mi South 3.5 mph - N/A Fog Fog
4:55 AM 49.6 °F 49.6 °F 100% 29.87 in 0.5 mi Calm Calm - N/A Fog Fog
5:42 AM 50.0 °F 50.0 °F 100% 29.85 in 0.8 mi Variable 3.5 mph - N/A   Mist
5:47 AM 50.0 °F 50.0 °F 100% 29.85 in 0.8 mi Variable 3.5 mph - N/A   Mist
5:52 AM 50.0 °F 50.0 °F 100% 29.85 in 0.8 mi Variable 3.5 mph - N/A   Mist
5:53 AM 50.0 °F 50.0 °F 100% 29.85 in 1.0 mi SE 3.5 mph - N/A   Mist
5:55 AM 50.0 °F 50.0 °F 100% 29.85 in 1.0 mi Variable 3.5 mph - N/A   Mist
5:57 AM 50.0 °F 50.0 °F 100% 29.85 in 1.2 mi Variable 3.5 mph - N/A   Overcast
6:01 AM 50.0 °F 50.0 °F 100% 29.85 in 1.5 mi Calm Calm - N/A   Overcast
6:05 AM 50.0 °F 50.0 °F 100% 29.85 in 1.8 mi South 4.6 mph - N/A   Overcast
6:12 AM 50.0 °F 50.0 °F 100% 29.85 in 2.0 mi Variable 3.5 mph - N/A   Overcast
6:26 AM 50.0 °F 50.0 °F 100% 29.84 in 2.5 mi Variable 4.6 mph - N/A   Overcast
6:40 AM 51.8 °F 51.8 °F 100% 29.84 in 2.0 mi SSE 3.5 mph - N/A   Overcast
6:55 AM 51.1 °F 51.1 °F 100% 29.82 in 2.0 mi SE 6.9 mph - N/A   Overcast
6:57 AM 51.8 °F 51.8 °F 100% 29.82 in 2.5 mi SE 8.1 mph - N/A   Overcast
7:00 AM 51.8 °F 51.8 °F 100% 29.82 in 2.5 mi SE 6.9 mph - N/A   Overcast
7:02 AM 51.8 °F 51.8 °F 100% 29.82 in 2.5 mi Variable 5.8 mph - N/A   Overcast
7:03 AM 51.8 °F 51.8 °F 100% 29.82 in 3.0 mi Variable 4.6 mph - N/A   Overcast
7:05 AM 51.8 °F 51.8 °F 100% 29.82 in 3.0 mi Variable 3.5 mph - N/A   Overcast
7:19 AM 51.8 °F 51.8 °F 100% 29.82 in 2.5 mi South 5.8 mph - N/A   Overcast
7:28 AM 51.8 °F 51.8 °F 100% 29.81 in 3.0 mi Calm Calm - N/A   Overcast
7:31 AM 51.8 °F 51.8 °F 100% 29.82 in 3.0 mi Calm Calm - N/A   Overcast
7:37 AM 51.8 °F 51.8 °F 100% 29.82 in 2.5 mi Calm Calm - N/A   Overcast
7:46 AM 51.8 °F 51.8 °F 100% 29.81 in 3.0 mi Calm Calm - N/A   Overcast
7:55 AM 52.2 °F 52.2 °F 100% 29.82 in 0.8 mi Calm Calm - N/A   Overcast
8:55 AM 53.8 °F - N/A% 29.81 in 0.8 mi Variable 5.8 mph - N/A   Overcast
8:58 AM 53.6 °F - N/A% 29.80 in 0.8 mi Variable 3.5 mph - N/A   Overcast
9:55 AM 54.1 °F - N/A% 29.79 in 0.8 mi Calm Calm - N/A   Overcast
10:55 AM 57.2 °F 57.2 °F 100% 29.77 in 0.5 mi Variable 3.5 mph - N/A Fog Fog
11:55 AM 57.2 °F 57.2 °F 100% 29.72 in 0.8 mi Variable 3.5 mph - N/A   Overcast
12:03 PM 57.2 °F 57.2 °F 100% 29.71 in 1.0 mi Variable 2.3 mph - N/A   Overcast
12:39 PM 59.0 °F 57.2 °F 94% 29.68 in 2.0 mi South 4.6 mph - N/A   Mostly Cloudy
12:56 PM 60.8 °F 59.0 °F 94% 29.68 in 3.0 mi Variable 4.6 mph - N/A   Mostly Cloudy
1:07 PM 60.8 °F 59.0 °F 94% 29.67 in 5.0 mi South 6.9 mph - N/A   Mostly Cloudy
1:55 PM 62.4 °F 62.1 °F 99% 29.65 in 10.0 mi Variable 3.5 mph - N/A   Overcast
2:55 PM 63.9 °F 61.9 °F 93% 29.63 in 10.0 mi Calm Calm - N/A   Mostly Cloudy
3:55 PM 64.8 °F 60.3 °F 85% 29.63 in 10.0 mi Calm Calm - N/A   Overcast
4:55 PM 64.9 °F 57.4 °F 76% 29.62 in 10.0 mi SSW 5.8 mph - N/A   Overcast
5:55 PM 62.8 °F 57.6 °F 83% 29.63 in 10.0 mi Variable 5.8 mph - N/A   Mostly Cloudy
6:55 PM 61.7 °F 57.0 °F 85% 29.62 in 10.0 mi Calm Calm - N/A   Partly Cloudy
7:55 PM 60.3 °F 58.5 °F 94% 29.62 in 10.0 mi Variable 3.5 mph - N/A   Mostly Cloudy
8:55 PM 60.4 °F 59.2 °F 96% 29.62 in 10.0 mi Variable 3.5 mph - N/A   Overcast
9:55 PM 61.2 °F 58.8 °F 92% 29.63 in 10.0 mi SW 4.6 mph - N/A   Overcast
10:03 PM 60.8 °F 59.0 °F 94% 29.62 in 10.0 mi Calm Calm - N/A   Overcast
10:10 PM 60.8 °F 59.0 °F 94% 29.62 in 10.0 mi Variable 3.5 mph - N/A   Overcast
10:55 PM 60.4 °F 58.3 °F 93% 29.63 in 10.0 mi Variable 3.5 mph - N/A   Clear
11:55 PM 60.8 °F 58.8 °F 93% 29.64 in 10.0 mi WNW 4.6 mph - N/A   Overcast
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