Bristow, VA

1:41 PM EST on December 10, 2016 (GMT -0500)
Manassas Regional-Davis

Weather History for KHEF - December, 2011

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Thursday, December 29, 2011

  Actual Average Record
Temperature  
Mean Temperature 32 °F -  
Max Temperature 42 °F 41 °F 64 °F (1996)
Min Temperature 21 °F 22 °F 10 °F (2000)
Degree Days  
Heating Degree Days 34    
Moisture  
Dew Point 22 °F    
Average Humidity 76    
Maximum Humidity 93    
Minimum Humidity 49    
Precipitation  
Precipitation 0.00 in - - ()
Sea Level Pressure  
Sea Level Pressure 30.02 in    
Wind  
Wind Speed 1 mph (SSE)    
Max Wind Speed 12 mph    
Max Gust Speed -    
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. 29, 2011 Rise Set
Actual Time 7:27 AM EST 4:56 PM EST
Civil Twilight 6:57 AM EST 5:26 PM EST
Nautical Twilight 6:24 AM EST 5:59 PM EST
Astronomical Twilight 5:51 AM EST 6:32 PM EST
Moon 10:23 AM EST (12/29) 10:27 PM EST (12/29)
Length of Visible Light 10h 28m
Length of Day
9h 29m
Waxing Crescent, 26% of the Moon is Illuminated
Dec 29
Waxing Crescent
Jan 1
First Quarter
Jan 9
Full
Jan 16
Last Quarter
Jan 23
New

Hourly Weather History & Observations

Time (EST) Temp. Windchill Dew Point Humidity Pressure Visibility Wind Dir Wind Speed Gust Speed Precip Events Conditions
12:15 AM 28.4 °F - 19.4 °F 69% 30.03 in 10.0 mi Calm Calm - N/A   Clear
12:35 AM 24.8 °F 20.5 °F 19.4 °F 80% 30.03 in 10.0 mi South 3.5 mph - N/A   Clear
12:55 AM 24.8 °F - 19.4 °F 80% 30.04 in 10.0 mi Calm Calm - N/A   Clear
1:15 AM 24.8 °F - 19.4 °F 80% 30.04 in 10.0 mi Calm Calm - N/A   Clear
1:35 AM 26.6 °F - 19.4 °F 74% 30.04 in 10.0 mi Calm Calm - N/A   Clear
1:55 AM 24.8 °F - 19.4 °F 80% 30.04 in 10.0 mi Calm Calm - N/A   Clear
2:15 AM 24.8 °F - 19.4 °F 80% 30.04 in 10.0 mi Calm Calm - N/A   Clear
2:35 AM 23.0 °F - 17.6 °F 80% 30.04 in 10.0 mi Calm Calm - N/A   Clear
2:55 AM 24.8 °F - 17.6 °F 74% 30.03 in 10.0 mi Calm Calm - N/A   Clear
3:15 AM 23.0 °F - 19.4 °F 86% 30.03 in 10.0 mi Calm Calm - N/A   Clear
3:35 AM 23.0 °F - 19.4 °F 86% 30.03 in 10.0 mi Calm Calm - N/A   Clear
3:55 AM 23.0 °F - 19.4 °F 86% 30.03 in 10.0 mi Calm Calm - N/A   Clear
4:15 AM 23.0 °F - 17.6 °F 80% 30.04 in 10.0 mi Calm Calm - N/A   Clear
4:55 AM 23.0 °F - 19.4 °F 86% 30.04 in 10.0 mi Calm Calm - N/A   Clear
5:15 AM 21.2 °F - 19.4 °F 93% 30.04 in 10.0 mi Calm Calm - N/A   Clear
5:35 AM 23.0 °F - 17.6 °F 80% 30.04 in 10.0 mi Calm Calm - N/A   Clear
6:15 AM 23.0 °F 15.8 °F 19.4 °F 86% 30.05 in 10.0 mi South 5.8 mph - N/A   Clear
6:50 AM 23.0 °F - 19.4 °F 86% 30.06 in 10.0 mi Calm Calm - N/A   Partly Cloudy
7:45 AM 24.8 °F - 21.2 °F 86% 30.07 in 10.0 mi Calm Calm - N/A   Clear
10:50 AM 35.6 °F - 26.6 °F 70% 30.08 in 10.0 mi Calm Calm - N/A   Overcast
11:48 AM 37.4 °F - 26.6 °F 65% 30.06 in 10.0 mi Calm Calm - N/A   Overcast
12:50 PM 37.4 °F - 24.8 °F 60% 30.03 in 10.0 mi Calm Calm - N/A   Overcast
2:48 PM 42.8 °F 36.6 °F 24.8 °F 49% 29.96 in 10.0 mi SE 11.5 mph - N/A   Overcast
3:53 PM 41.0 °F 35.8 °F 26.6 °F 57% 29.99 in 10.0 mi SSE 8.1 mph - N/A   Mostly Cloudy
4:45 PM 39.2 °F 35.9 °F 26.6 °F 61% 29.98 in 10.0 mi SSE 4.6 mph - N/A   Mostly Cloudy
5:45 PM 37.4 °F - 26.6 °F 65% 29.98 in 10.0 mi Calm Calm - N/A   Overcast
6:45 PM 35.6 °F - 28.4 °F 75% 29.99 in 10.0 mi Calm Calm - N/A   Overcast
7:50 PM 35.6 °F - 28.4 °F 75% 29.99 in 10.0 mi Calm Calm - N/A   Overcast
8:50 PM 37.4 °F - 28.4 °F 70% 29.97 in 10.0 mi Calm Calm - N/A   Overcast
10:35 PM 33.8 °F 29.6 °F 26.6 °F 75% 29.97 in 10.0 mi South 4.6 mph - N/A   Scattered Clouds
10:55 PM 33.8 °F - 24.8 °F 70% 29.97 in 10.0 mi Calm Calm - N/A   Mostly Cloudy
11:15 PM 32.0 °F 28.7 °F 26.6 °F 80% 29.96 in 10.0 mi South 3.5 mph - N/A   Mostly Cloudy
11:35 PM 32.0 °F - 26.6 °F 80% 29.96 in 10.0 mi Calm Calm - N/A   Mostly Cloudy
11:55 PM 32.0 °F 28.7 °F 26.6 °F 80% 29.96 in 10.0 mi South 3.5 mph - N/A   Mostly Cloudy