Weather History for Fort Belvoir, VA

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Saturday, December 22, 2012

  Actual Average Record
Temperature  
Mean Temperature 38 °F -  
Max Temperature 44 °F 44 °F 70 °F (2013)
Min Temperature 32 °F 26 °F 14 °F (2000)
Degree Days  
Heating Degree Days 27    
Moisture  
Dew Point 19 °F    
Average Humidity 45    
Maximum Humidity 59    
Minimum Humidity 36    
Precipitation  
Precipitation 0.09 in - - ()
Sea Level Pressure  
Sea Level Pressure 29.86 in    
Wind  
Wind Speed 16 mph (WNW)    
Max Wind Speed 26 mph    
Max Gust Speed 38 mph    
Visibility 10 miles    
Events      
Averages and records for this station are not official NWS values.
T = Trace of Precipitation, MM = Missing Value Source: NWS Daily Summary

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Date:

Astronomy

Dec. 22, 2012 Rise Set
Actual Time 7:23 AM EST 4:51 PM EST
Civil Twilight 6:53 AM EST 5:21 PM EST
Nautical Twilight 6:20 AM EST 5:54 PM EST
Astronomical Twilight 5:48 AM EST 6:27 PM EST
Moon 1:06 PM EST (12/22) 2:09 AM EST (12/22)
Length of Visible Light 10h 27m
Length of Day
9h 27m
Waxing Gibbous, 73% of the Moon is Illuminated
Dec 22
Waxing Gibbous
Dec 28
Full
Jan 4
Last Quarter
Jan 11
New
Jan 18
First Quarter

Hourly Weather History & Observations

Time (EST) Temp. Windchill Dew Point Humidity Pressure Visibility Wind Dir Wind Speed Gust Speed Precip Events Conditions
12:55 AM 38.7 °F 33.6 °F 19.0 °F 45% 29.62 in 10.0 mi West 6.9 mph 18.4 mph N/A   Mostly Cloudy
1:55 AM 38.8 °F 30.4 °F 19.4 °F 46% 29.63 in 10.0 mi WNW 15.0 mph 27.6 mph N/A   Partly Cloudy
2:55 AM 39.4 °F 30.7 °F 19.6 °F 45% 29.65 in 10.0 mi West 16.1 mph 24.2 mph N/A   Mostly Cloudy
3:55 AM 39.7 °F 30.3 °F 20.7 °F 46% 29.65 in 10.0 mi WNW 19.6 mph 28.8 mph 0.01 in   Mostly Cloudy
4:55 AM 39.6 °F 30.3 °F 21.0 °F 48% 29.70 in 10.0 mi West 18.4 mph 23.0 mph N/A   Overcast
5:55 AM 39.7 °F 30.9 °F 20.7 °F 46% 29.73 in 10.0 mi WNW 17.3 mph 35.7 mph N/A   Overcast
6:55 AM 39.6 °F 32.5 °F 20.3 °F 46% 29.76 in 10.0 mi WNW 11.5 mph 26.5 mph 0.01 in   Overcast
7:55 AM 39.0 °F 28.3 °F 21.2 °F 49% 29.80 in 10.0 mi West 24.2 mph 33.4 mph N/A   Overcast
8:55 AM 39.0 °F 29.0 °F 22.5 °F 52% 29.84 in 10.0 mi WNW 20.7 mph 35.7 mph 0.01 in   Overcast
9:55 AM 40.8 °F 30.2 °F 19.6 °F 43% 29.88 in 10.0 mi NW 26.5 mph 36.8 mph 0.01 in   Overcast
10:55 AM 41.0 °F 31.1 °F 18.7 °F 41% 29.90 in 10.0 mi NW 23.0 mph 33.4 mph 0.01 in   Overcast
11:55 AM 41.9 °F 32.6 °F 18.5 °F 39% 29.89 in 10.0 mi WNW 21.9 mph 38.0 mph N/A   Mostly Cloudy
12:55 PM 43.7 °F 35.7 °F 18.5 °F 36% 29.88 in 10.0 mi West 18.4 mph 36.8 mph 0.01 in   Partly Cloudy
1:55 PM 44.2 °F 35.2 °F 18.7 °F 36% 29.88 in 10.0 mi WNW 24.2 mph 34.5 mph N/A   Clear
2:55 PM 44.1 °F 35.4 °F 19.4 °F 37% 29.88 in 10.0 mi WNW 21.9 mph 29.9 mph 0.03 in   Clear
3:55 PM 43.2 °F 34.2 °F 18.9 °F 38% 29.92 in 10.0 mi WNW 21.9 mph 28.8 mph N/A   Clear
4:55 PM 40.6 °F 33.8 °F 18.5 °F 41% 29.98 in 10.0 mi NW 11.5 mph 18.4 mph N/A   Clear
5:55 PM 38.7 °F 28.8 °F 18.5 °F 44% 29.99 in 10.0 mi WNW 19.6 mph 26.5 mph N/A   Clear
6:55 PM 37.4 °F 28.9 °F 18.5 °F 46% 30.01 in 10.0 mi NW 13.8 mph 20.7 mph N/A   Clear
7:55 PM 36.5 °F 28.2 °F 18.7 °F 49% 30.01 in 10.0 mi WNW 12.7 mph 29.9 mph N/A   Clear
8:55 PM 35.4 °F 29.7 °F 18.9 °F 51% 30.04 in 10.0 mi WNW 6.9 mph - N/A   Clear
9:55 PM 32.5 °F 29.3 °F 19.8 °F 59% 30.06 in 10.0 mi West 3.5 mph - N/A   Clear
11:55 PM 34.9 °F 26.6 °F 18.5 °F 51% 30.07 in 10.0 mi NW 11.5 mph - N/A   Clear