Weather History for Fort Belvoir, VA

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Monday, December 17, 2012

  Actual Average Record
Temperature  
Mean Temperature 50 °F -  
Max Temperature 54 °F 46 °F 60 °F (1997)
Min Temperature 46 °F 28 °F 15 °F (2010)
Degree Days  
Heating Degree Days 15    
Moisture  
Dew Point 49 °F    
Average Humidity 100    
Maximum Humidity 100    
Minimum Humidity 94    
Precipitation  
Precipitation 0.03 in - - ()
Sea Level Pressure  
Sea Level Pressure 29.77 in    
Wind  
Wind Speed 1 mph (SE)    
Max Wind Speed 8 mph    
Max Gust Speed -    
Visibility 4 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

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Date:

Astronomy

Dec. 17, 2012 Rise Set
Actual Time 7:21 AM EST 4:49 PM EST
Civil Twilight 6:51 AM EST 5:18 PM EST
Nautical Twilight 6:17 AM EST 5:52 PM EST
Astronomical Twilight 5:45 AM EST 6:24 PM EST
Moon 10:31 AM EST (12/17) 10:05 PM EST (12/17)
Length of Visible Light 10h 27m
Length of Day
9h 27m
Waxing Crescent, 24% of the Moon is Illuminated
Dec 17
Waxing Crescent
Dec 20
First Quarter
Dec 28
Full
Jan 4
Last Quarter
Jan 11
New

Hourly Weather History & Observations

Time (EST) Temp. Dew Point Humidity Pressure Visibility Wind Dir Wind Speed Gust Speed Precip Events Conditions
12:55 AM 48.2 °F 48.0 °F 99% 29.86 in 10.0 mi Calm Calm - N/A   Overcast
1:02 AM 48.2 °F 48.2 °F 100% 29.85 in 9.0 mi SE 3.5 mph - N/A   Overcast
1:04 AM 48.2 °F 48.2 °F 100% 29.85 in 9.0 mi SE 3.5 mph - N/A   Overcast
1:06 AM 48.2 °F 48.2 °F 100% 29.85 in 9.0 mi SE 3.5 mph - N/A   Overcast
1:55 AM 48.2 °F 47.8 °F 99% 29.85 in 10.0 mi Calm Calm - N/A   Overcast
2:55 AM 48.4 °F 48.0 °F 99% 29.85 in 10.0 mi Calm Calm - N/A   Overcast
3:13 AM 48.2 °F 48.2 °F 100% 29.84 in 9.0 mi Calm Calm - N/A   Overcast
3:14 AM 48.2 °F 48.2 °F 100% 29.84 in 9.0 mi Calm Calm - N/A   Overcast
3:28 AM 48.2 °F 48.2 °F 100% 29.84 in 8.0 mi NW 3.5 mph - N/A   Overcast
3:31 AM 48.2 °F 48.2 °F 100% 29.86 in 9.0 mi NW 8.1 mph - N/A   Overcast
3:38 AM 48.2 °F 48.2 °F 100% 29.84 in 9.0 mi NW 3.5 mph - N/A Rain Light Rain
3:45 AM 48.2 °F 48.2 °F 100% 29.84 in 7.0 mi Calm Calm - N/A Rain Light Rain
3:52 AM 48.2 °F 48.2 °F 100% 29.84 in 7.0 mi Calm Calm - N/A Rain Light Rain
3:55 AM 48.6 °F 48.4 °F 99% 29.84 in 7.0 mi Calm Calm - 0.01 in Rain Light Rain
4:00 AM 48.2 °F 48.2 °F 100% 29.84 in 7.0 mi Calm Calm - N/A Rain Light Rain
4:05 AM 48.2 °F 48.2 °F 100% 29.84 in 7.0 mi Calm Calm - N/A   Overcast
4:07 AM 48.2 °F 48.2 °F 100% 29.83 in 7.0 mi Calm Calm - N/A   Overcast
4:45 AM 48.2 °F 48.2 °F 100% 29.82 in 4.0 mi Calm Calm - N/A   Overcast
4:48 AM 48.2 °F 48.2 °F 100% 29.82 in 4.0 mi Calm Calm - N/A   Overcast
4:55 AM 48.0 °F 48.0 °F 100% 29.82 in 5.0 mi Calm Calm - 0.00 in   Overcast
4:59 AM 48.2 °F 48.2 °F 100% 29.82 in 4.0 mi Calm Calm - N/A   Overcast
5:00 AM 48.2 °F 48.2 °F 100% 29.82 in 4.0 mi Calm Calm - N/A   Overcast
5:09 AM 48.2 °F 48.2 °F 100% 29.82 in 2.5 mi Calm Calm - N/A   Mostly Cloudy
5:18 AM 48.2 °F 48.2 °F 100% 29.82 in 2.0 mi Calm Calm - N/A   Mostly Cloudy
5:20 AM 48.2 °F 48.2 °F 100% 29.82 in 2.5 mi Calm Calm - N/A   Mostly Cloudy
5:22 AM 48.2 °F 48.2 °F 100% 29.82 in 2.5 mi Calm Calm - N/A   Scattered Clouds
5:28 AM 48.2 °F 48.2 °F 100% 29.83 in 3.0 mi Calm Calm - N/A   Partly Cloudy
5:30 AM 48.2 °F 48.2 °F 100% 29.82 in 3.0 mi Calm Calm - N/A   Scattered Clouds
5:35 AM 48.2 °F 48.2 °F 100% 29.83 in 3.0 mi Calm Calm - N/A   Scattered Clouds
5:36 AM 48.2 °F 48.2 °F 100% 29.83 in 3.0 mi Calm Calm - N/A   Mostly Cloudy
5:53 AM 48.2 °F 48.2 °F 100% 29.83 in 5.0 mi Calm Calm - N/A   Overcast
5:55 AM 47.7 °F 47.7 °F 100% 29.83 in 5.0 mi Calm Calm - N/A   Overcast
6:24 AM 46.4 °F 46.4 °F 100% 29.83 in 2.5 mi Calm Calm - N/A   Mostly Cloudy
6:28 AM 46.4 °F 46.4 °F 100% 29.83 in 2.0 mi Calm Calm - N/A   Mostly Cloudy
6:29 AM 46.4 °F 46.4 °F 100% 29.83 in 1.5 mi Calm Calm - N/A   Mostly Cloudy
6:30 AM 46.4 °F 46.4 °F 100% 29.83 in 1.2 mi Calm Calm - N/A   Mostly Cloudy
6:32 AM 46.4 °F 46.4 °F 100% 29.83 in 1.0 mi Calm Calm - N/A   Mist
6:34 AM 46.4 °F 46.4 °F 100% 29.83 in 0.8 mi Calm Calm - N/A   Mist
6:37 AM 46.4 °F 46.4 °F 100% 29.83 in 0.5 mi Calm Calm - N/A Fog Fog
6:38 AM 46.4 °F 46.4 °F 100% 29.83 in 0.5 mi Calm Calm - N/A Fog Fog
6:40 AM 46.4 °F 46.4 °F 100% 29.83 in 0.5 mi Calm Calm - N/A Fog Fog
6:41 AM 46.4 °F 46.4 °F 100% 29.83 in 0.5 mi Calm Calm - N/A Fog Fog
6:42 AM 46.4 °F 46.4 °F 100% 29.83 in 0.5 mi Calm Calm - N/A Fog Fog
6:45 AM 46.4 °F 46.4 °F 100% 29.83 in 0.5 mi Calm Calm - N/A Fog Fog
6:53 AM 46.4 °F 46.4 °F 100% 29.83 in 0.5 mi Calm Calm - N/A Fog Fog
6:54 AM 46.4 °F 46.4 °F 100% 29.83 in 0.5 mi Calm Calm - N/A Fog Fog
6:55 AM 46.4 °F 46.4 °F 100% 29.83 in 0.5 mi Calm Calm - N/A Fog Fog
6:58 AM 46.4 °F 46.4 °F 100% 29.83 in 0.8 mi Calm Calm - N/A   Overcast
7:01 AM 46.4 °F 46.4 °F 100% 29.83 in 0.8 mi Calm Calm - N/A   Overcast
7:02 AM 46.4 °F 46.4 °F 100% 29.83 in 0.5 mi Calm Calm - N/A Fog Fog
7:04 AM 46.4 °F 46.4 °F 100% 29.83 in 0.5 mi Calm Calm - N/A Fog Fog
7:07 AM 46.4 °F 46.4 °F 100% 29.83 in 0.5 mi Calm Calm - N/A Fog Fog
7:18 AM 46.4 °F 46.4 °F 100% 29.83 in 0.5 mi Calm Calm - N/A Fog Fog
7:28 AM 46.4 °F 46.4 °F 100% 29.83 in 0.2 mi Calm Calm - N/A Fog Fog
7:29 AM 46.4 °F 46.4 °F 100% 29.83 in 0.2 mi Calm Calm - N/A Fog Fog
7:31 AM 46.4 °F 46.4 °F 100% 29.83 in 0.2 mi Calm Calm - N/A Fog Fog
7:33 AM 46.4 °F 46.4 °F 100% 29.83 in 0.5 mi Calm Calm - N/A Fog Fog
7:34 AM 46.4 °F 46.4 °F 100% 29.83 in 0.5 mi Calm Calm - N/A Fog Fog
7:35 AM 46.4 °F 46.4 °F 100% 29.83 in 0.5 mi Calm Calm - N/A Fog Fog
7:37 AM 46.4 °F 46.4 °F 100% 29.83 in 0.8 mi Calm Calm - N/A   Overcast
7:42 AM 46.4 °F 46.4 °F 100% 29.83 in 0.8 mi Calm Calm - N/A   Overcast
7:47 AM 46.4 °F 46.4 °F 100% 29.83 in 1.0 mi Calm Calm - N/A   Overcast
7:49 AM 46.4 °F 46.4 °F 100% 29.83 in 1.2 mi Calm Calm - N/A   Overcast
7:50 AM 46.4 °F 46.4 °F 100% 29.83 in 1.5 mi Calm Calm - N/A   Overcast
7:51 AM 46.4 °F 46.4 °F 100% 29.83 in 1.8 mi Calm Calm - N/A   Overcast
7:52 AM 46.4 °F 46.4 °F 100% 29.83 in 2.0 mi Calm Calm - N/A   Overcast
7:55 AM 46.2 °F 46.2 °F 100% 29.83 in 1.8 mi Calm Calm - N/A   Overcast
7:58 AM 46.4 °F 46.4 °F 100% 29.84 in 1.5 mi Calm Calm - N/A   Overcast
8:03 AM 46.4 °F 46.4 °F 100% 29.84 in 1.8 mi Calm Calm - N/A   Overcast
8:04 AM 46.4 °F 46.4 °F 100% 29.84 in 2.0 mi Calm Calm - N/A   Overcast
8:06 AM 48.2 °F 48.2 °F 100% 29.84 in 2.5 mi Calm Calm - N/A   Overcast
8:07 AM 48.2 °F 48.2 °F 100% 29.84 in 2.5 mi WNW 3.5 mph - N/A   Overcast
8:08 AM 48.2 °F 48.2 °F 100% 29.84 in 3.0 mi Calm Calm - N/A   Overcast
8:19 AM 48.2 °F 48.2 °F 100% 29.85 in 3.0 mi Calm Calm - N/A   Overcast
8:31 AM 48.2 °F 48.2 °F 100% 29.85 in 4.0 mi Calm Calm - N/A   Overcast
8:55 AM 48.9 °F 48.9 °F 100% 29.86 in 4.0 mi Calm Calm - N/A   Overcast
9:55 AM 50.2 °F 50.0 °F 99% 29.87 in 5.0 mi Calm Calm - N/A   Overcast
10:12 AM 50.0 °F 50.0 °F 100% 29.87 in 5.0 mi Calm Calm - N/A   Overcast
10:55 AM 50.4 °F 50.2 °F 99% 29.86 in 4.0 mi Calm Calm - N/A   Overcast
11:13 AM 50.0 °F 50.0 °F 100% 29.85 in 4.0 mi Calm Calm - N/A   Overcast
11:45 AM 51.8 °F 50.0 °F 94% 29.84 in 6.0 mi Variable 3.5 mph - N/A   Overcast
11:55 AM 51.4 °F 50.4 °F 96% 29.83 in 7.0 mi Calm Calm - N/A   Overcast
12:55 PM 51.3 °F 50.4 °F 97% 29.80 in 7.0 mi Calm Calm - N/A   Overcast
1:55 PM 51.8 °F 50.9 °F 97% 29.77 in 8.0 mi Calm Calm - N/A   Overcast
2:43 PM 51.8 °F 51.8 °F 100% 29.77 in 10.0 mi Calm Calm - N/A   Overcast
2:55 PM 51.8 °F 51.6 °F 99% 29.76 in 9.0 mi Calm Calm - N/A   Overcast
3:55 PM 52.0 °F 51.8 °F 99% 29.75 in 10.0 mi SE 4.6 mph - N/A   Overcast
4:55 PM 52.0 °F 51.8 °F 99% 29.72 in 10.0 mi ESE 4.6 mph - N/A   Overcast
4:58 PM 51.8 °F 51.8 °F 100% 29.72 in 10.0 mi ESE 4.6 mph - N/A   Overcast
7:55 PM 52.5 °F 52.5 °F 100% 29.65 in 7.0 mi Variable 3.5 mph - N/A   Overcast
7:57 PM 51.8 °F 51.8 °F 100% 29.65 in 7.0 mi Variable 4.6 mph - N/A   Overcast
8:27 PM 51.8 °F 51.8 °F 100% 29.63 in 7.0 mi ESE 4.6 mph - N/A Rain Light Rain
8:28 PM 53.6 °F 51.8 °F 94% 29.63 in 7.0 mi ESE 3.5 mph - N/A Rain Light Rain
8:37 PM 53.6 °F 53.6 °F 100% 29.63 in 5.0 mi ESE 5.8 mph - N/A   Overcast
8:46 PM 53.6 °F 53.6 °F 100% 29.63 in 4.0 mi East 3.5 mph - N/A Rain Light Rain
8:49 PM 53.6 °F 53.6 °F 100% 29.62 in 3.0 mi ESE 4.6 mph - N/A   Light Drizzle
8:55 PM 53.1 °F 53.1 °F 100% 29.63 in 3.0 mi ESE 3.5 mph - 0.00 in   Light Drizzle
8:57 PM 53.6 °F 53.6 °F 100% 29.62 in 3.0 mi ESE 4.6 mph - N/A   Overcast
9:01 PM 53.6 °F 53.6 °F 100% 29.62 in 2.5 mi ESE 4.6 mph - N/A   Overcast
9:02 PM 53.6 °F 53.6 °F 100% 29.62 in 2.5 mi ESE 4.6 mph - N/A   Light Drizzle
9:12 PM 53.6 °F 53.6 °F 100% 29.62 in 2.5 mi ESE 5.8 mph - N/A   Light Drizzle
9:14 PM 53.6 °F 53.6 °F 100% 29.62 in 3.0 mi ESE 5.8 mph - N/A   Light Drizzle
9:19 PM 53.6 °F 53.6 °F 100% 29.62 in 3.0 mi SE 5.8 mph - N/A   Light Drizzle
9:20 PM 53.6 °F 53.6 °F 100% 29.62 in 3.0 mi SE 5.8 mph - N/A   Overcast
9:28 PM 53.6 °F 53.6 °F 100% 29.61 in 3.0 mi ESE 6.9 mph - N/A   Overcast
9:34 PM 53.6 °F 53.6 °F 100% 29.61 in 4.0 mi South 3.5 mph - N/A   Overcast
9:55 PM 53.1 °F 53.1 °F 100% 29.60 in 4.0 mi SE 5.8 mph - 0.01 in   Overcast
10:54 PM 53.6 °F 53.6 °F 100% 29.60 in 6.0 mi SSE 5.8 mph - N/A Rain Light Rain
10:55 PM 54.0 °F 54.0 °F 100% 29.59 in 6.0 mi SE 5.8 mph - 0.00 in   Overcast
11:13 PM 53.6 °F 53.6 °F 100% 29.60 in 7.0 mi Calm Calm - N/A   Overcast
11:19 PM 53.6 °F 53.6 °F 100% 29.59 in 7.0 mi SSW 3.5 mph - N/A   Overcast
11:25 PM 53.6 °F 53.6 °F 100% 29.59 in 7.0 mi Calm Calm - N/A Rain Light Rain
11:39 PM 53.6 °F 53.6 °F 100% 29.58 in 5.0 mi SSE 4.6 mph - N/A   Overcast
11:40 PM 53.6 °F 53.6 °F 100% 29.58 in 5.0 mi SSE 3.5 mph - N/A   Overcast
11:41 PM 53.6 °F 53.6 °F 100% 29.58 in 6.0 mi SSE 3.5 mph - N/A   Overcast
11:48 PM 53.6 °F 53.6 °F 100% 29.57 in 7.0 mi Calm Calm - N/A   Overcast
11:50 PM 53.6 °F 53.6 °F 100% 29.57 in 8.0 mi South 3.5 mph - N/A   Overcast
11:52 PM 53.6 °F 53.6 °F 100% 29.57 in 8.0 mi Variable 3.5 mph - N/A   Overcast
11:55 PM 54.0 °F 54.0 °F 100% 29.57 in 9.0 mi Calm Calm - 0.01 in   Overcast
11:57 PM 53.6 °F 53.6 °F 100% 29.57 in 9.0 mi Calm Calm - N/A   Overcast
11:59 PM 53.6 °F 53.6 °F 100% 29.57 in 10.0 mi South 3.5 mph - N/A   Overcast