Weather History for Fort Belvoir, VA

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Tuesday, September 10, 2013

  Actual Average Record
Temperature  
Mean Temperature 80 °F -  
Max Temperature 90 °F 80 °F 91 °F (2007)
Min Temperature 71 °F 59 °F 35 °F (1997)
Cooling Degree Days 16    
Growing Degree Days 30 (Base 50)    
Moisture  
Dew Point 71 °F    
Average Humidity 87    
Maximum Humidity 100    
Minimum Humidity 54    
Precipitation  
Precipitation 0.00 in - - ()
Sea Level Pressure  
Sea Level Pressure 30.16 in    
Wind  
Wind Speed 4 mph (SSE)    
Max Wind Speed 8 mph    
Max Gust Speed -    
Visibility 9 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

Sep. 10, 2013 Rise Set
Actual Time 6:45 AM EDT 7:24 PM EDT
Civil Twilight 6:19 AM EDT 7:51 PM EDT
Nautical Twilight 5:47 AM EDT 8:22 PM EDT
Astronomical Twilight 5:14 AM EDT 8:55 PM EDT
Moon 12:05 PM EDT (9/10) 10:29 PM EDT (9/10)
Length of Visible Light 13h 32m
Length of Day
12h 38m
Waxing Crescent, 28% of the Moon is Illuminated
Sep 10
Waxing Crescent
Sep 12
First Quarter
Sep 19
Full
Sep 26
Last Quarter
Oct 4
New

Hourly Weather History & Observations

Time (EDT) Temp. Heat Index Dew Point Humidity Pressure Visibility Wind Dir Wind Speed Gust Speed Precip Events Conditions
12:03 AM 71.6 °F - 68.0 °F 88% 30.16 in 10.0 mi Variable 2.3 mph - N/A   Scattered Clouds
12:48 AM 71.6 °F - 69.8 °F 94% 30.16 in 10.0 mi SSE 5.8 mph - N/A   Mostly Cloudy
12:58 AM 72.1 °F - 68.9 °F 89% 30.17 in 10.0 mi SSE 5.8 mph - N/A   Mostly Cloudy
1:03 AM 71.6 °F - 68.0 °F 88% 30.16 in 10.0 mi SSE 4.6 mph - N/A   Mostly Cloudy
1:58 AM 72.1 °F - 69.6 °F 92% 30.16 in 10.0 mi SSE 4.6 mph - N/A   Mostly Cloudy
2:43 AM 71.6 °F - 69.8 °F 94% 30.16 in 10.0 mi SSE 4.6 mph - N/A   Mostly Cloudy
2:58 AM 72.1 °F - 70.3 °F 94% 30.17 in 10.0 mi SSE 4.6 mph - N/A   Mostly Cloudy
3:13 AM 71.6 °F - 69.8 °F 94% 30.16 in 10.0 mi SE 4.6 mph - N/A   Scattered Clouds
3:18 AM 71.6 °F - 69.8 °F 94% 30.16 in 9.0 mi SSE 5.8 mph - N/A   Partly Cloudy
3:28 AM 71.6 °F - 69.8 °F 94% 30.15 in 10.0 mi Variable 4.6 mph - N/A   Clear
3:38 AM 71.6 °F - 69.8 °F 94% 30.15 in 9.0 mi Variable 4.6 mph - N/A   Clear
3:58 AM 72.1 °F - 70.5 °F 95% 30.16 in 7.0 mi Variable 4.6 mph - N/A   Scattered Clouds
4:08 AM 71.6 °F - 69.8 °F 94% 30.15 in 5.0 mi Variable 3.5 mph - N/A   Scattered Clouds
4:13 AM 71.6 °F - 69.8 °F 94% 30.15 in 6.0 mi SSE 3.5 mph - N/A   Mostly Cloudy
4:18 AM 71.6 °F - 69.8 °F 94% 30.15 in 7.0 mi SSE 4.6 mph - N/A   Mostly Cloudy
4:23 AM 71.6 °F - 69.8 °F 94% 30.15 in 6.0 mi SSE 3.5 mph - N/A   Scattered Clouds
4:28 AM 71.6 °F - 69.8 °F 94% 30.15 in 5.0 mi SE 2.3 mph - N/A   Mostly Cloudy
4:33 AM 71.6 °F - 69.8 °F 94% 30.15 in 4.0 mi SSE 2.3 mph - N/A   Mostly Cloudy
4:38 AM 71.6 °F - 69.8 °F 94% 30.15 in 6.0 mi Variable 2.3 mph - N/A   Mostly Cloudy
4:43 AM 71.6 °F - 69.8 °F 94% 30.15 in 9.0 mi South 2.3 mph - N/A   Mostly Cloudy
4:48 AM 71.6 °F - 69.8 °F 94% 30.15 in 10.0 mi Variable 1.2 mph - N/A   Mostly Cloudy
4:53 AM 71.6 °F - 71.6 °F 100% 30.15 in 9.0 mi SSE 2.3 mph - N/A   Overcast
4:58 AM 72.3 °F - 70.9 °F 95% 30.16 in 9.0 mi SSE 2.3 mph - N/A   Overcast
5:23 AM 71.6 °F - 71.6 °F 100% 30.16 in 10.0 mi Variable 2.3 mph - N/A   Overcast
5:38 AM 71.6 °F - 69.8 °F 94% 30.15 in 9.0 mi Variable 2.3 mph - N/A   Overcast
5:58 AM 72.7 °F - 70.3 °F 92% 30.17 in 10.0 mi Variable 4.6 mph - N/A   Overcast
6:58 AM 72.7 °F - 70.0 °F 91% 30.18 in 10.0 mi Variable 4.6 mph - N/A   Overcast
7:58 AM 73.0 °F - 70.2 °F 91% 30.19 in 10.0 mi Variable 3.5 mph - N/A   Mostly Cloudy
8:13 AM 73.4 °F - 69.8 °F 88% 30.17 in 10.0 mi SSW 3.5 mph - N/A   Scattered Clouds
8:43 AM 75.2 °F - 69.8 °F 83% 30.18 in 10.0 mi SSW 5.8 mph - N/A   Mostly Cloudy
8:48 AM 75.2 °F - 69.8 °F 83% 30.17 in 10.0 mi Variable 5.8 mph - N/A   Mostly Cloudy
8:58 AM 75.2 °F - 69.8 °F 83% 30.18 in 10.0 mi Variable 4.6 mph - N/A   Mostly Cloudy
9:18 AM 77.0 °F - 69.8 °F 78% 30.18 in 10.0 mi Variable 4.6 mph - N/A   Scattered Clouds
9:58 AM 77.9 °F - 71.1 °F 79% 30.20 in 10.0 mi South 4.6 mph - N/A   Scattered Clouds
10:58 AM 80.8 °F 84.9 °F 71.8 °F 74% 30.20 in 10.0 mi Variable 4.6 mph - N/A   Clear
11:58 AM 84.0 °F 89.3 °F 71.4 °F 66% 30.18 in 10.0 mi Variable 1.2 mph - N/A   Clear
12:58 PM 86.4 °F 92.2 °F 71.6 °F 61% 30.17 in 10.0 mi Variable 3.5 mph - N/A   Clear
1:58 PM 87.4 °F 94.0 °F 72.1 °F 60% 30.16 in 10.0 mi Variable 5.8 mph - N/A   Clear
2:58 PM 90.0 °F 96.4 °F 71.4 °F 54% 30.14 in 10.0 mi SSW 8.1 mph - N/A   Clear
3:58 PM 89.2 °F 95.9 °F 71.4 °F 56% 30.13 in 10.0 mi South 6.9 mph - N/A   Clear
4:58 PM 88.9 °F 94.7 °F 70.7 °F 55% 30.12 in 10.0 mi South 5.8 mph - N/A   Clear
5:58 PM 88.0 °F 94.2 °F 71.4 °F 58% 30.12 in 10.0 mi Variable 4.6 mph - N/A   Clear
6:58 PM 85.3 °F 91.5 °F 72.5 °F 65% 30.12 in 10.0 mi Variable 2.3 mph - N/A   Clear
7:58 PM 82.6 °F 87.8 °F 72.5 °F 71% 30.12 in 10.0 mi Variable 2.3 mph - N/A   Clear
8:58 PM 79.5 °F - 73.4 °F 81% 30.14 in 10.0 mi Variable 3.5 mph - N/A   Clear
9:58 PM 75.6 °F - 74.3 °F 96% 30.16 in 10.0 mi Calm Calm - N/A   Clear
10:03 PM 75.2 °F - 75.2 °F 100% 30.15 in 10.0 mi SE 2.3 mph - N/A   Clear
10:08 PM 75.2 °F - 75.2 °F 100% 30.15 in 9.0 mi SE 2.3 mph - N/A   Clear
10:58 PM 74.1 °F - 74.1 °F 100% 30.17 in 7.0 mi Calm Calm - N/A   Clear
11:38 PM 73.4 °F - 73.4 °F 100% 30.16 in 5.0 mi SE 1.2 mph - N/A   Clear
11:48 PM 73.4 °F - 73.4 °F 100% 30.16 in 5.0 mi Calm Calm - N/A   Clear
11:58 PM 72.9 °F - 72.9 °F 100% 30.17 in 5.0 mi Calm Calm - N/A   Clear