Weather History for Manassas, VA

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Monday, December 31, 2012

  Actual Average Record
Temperature  
Mean Temperature 28 °F -  
Max Temperature 37 °F 42 °F 60 °F (2004)
Min Temperature 19 °F 22 °F 10 °F (2000)
Degree Days  
Heating Degree Days 37    
Moisture  
Dew Point 25 °F    
Average Humidity 86    
Maximum Humidity 100    
Minimum Humidity 60    
Precipitation  
Precipitation 0.00 in - - ()
Sea Level Pressure  
Sea Level Pressure 30.19 in    
Wind  
Wind Speed 0 mph (SSE)    
Max Wind Speed 6 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. 31, 2012 Rise Set
Actual Time 7:28 AM EST 4:58 PM EST
Civil Twilight 6:58 AM EST 5:28 PM EST
Nautical Twilight 6:25 AM EST 6:01 PM EST
Astronomical Twilight 5:52 AM EST 6:34 PM EST
Moon 8:24 PM EST 9:10 AM EST
Length of Visible Light 10h 30m
Length of Day
9h 30m
Waning Gibbous, 90% of the Moon is Illuminated
Dec 31
Waning Gibbous
Jan 4
Last Quarter
Jan 11
New
Jan 18
First Quarter
Jan 26
Full

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 24.8 °F - 23.0 °F 93% 30.33 in 10.0 mi Calm Calm - N/A   Clear
12:35 AM 24.8 °F - 23.0 °F 93% 30.32 in 10.0 mi Calm Calm - N/A   Clear
12:55 AM 23.0 °F - 21.2 °F 93% 30.32 in 10.0 mi Calm Calm - N/A   Clear
1:15 AM 21.2 °F - 21.2 °F 100% 30.32 in 10.0 mi Calm Calm - N/A   Clear
1:35 AM 21.2 °F - 21.2 °F 100% 30.33 in 10.0 mi Calm Calm - N/A   Clear
1:55 AM 21.2 °F - 19.4 °F 93% 30.33 in 10.0 mi Calm Calm - N/A   Clear
2:15 AM 21.2 °F - 21.2 °F 100% 30.34 in 10.0 mi Calm Calm - N/A   Clear
2:55 AM 21.2 °F - 19.4 °F 93% 30.34 in 10.0 mi Calm Calm - N/A   Clear
3:15 AM 19.4 °F - 17.6 °F 93% 30.32 in 10.0 mi Calm Calm - N/A   Clear
3:35 AM 21.2 °F - 19.4 °F 93% 30.31 in 10.0 mi Calm Calm - N/A   Clear
3:55 AM 21.2 °F - 21.2 °F 100% 30.30 in 10.0 mi Calm Calm - N/A   Clear
4:15 AM 21.2 °F - 21.2 °F 100% 30.31 in 10.0 mi Calm Calm - N/A   Clear
4:35 AM 21.2 °F - 19.4 °F 93% 30.32 in 10.0 mi Calm Calm - N/A   Clear
4:55 AM 21.2 °F 16.4 °F 19.4 °F 93% 30.31 in 10.0 mi SSE 3.5 mph - N/A   Clear
5:15 AM 21.2 °F - 21.2 °F 100% 30.30 in 10.0 mi Calm Calm - N/A   Clear
5:35 AM 21.2 °F - 19.4 °F 93% 30.30 in 10.0 mi Calm Calm - N/A   Clear
5:55 AM 21.2 °F - 21.2 °F 100% 30.30 in 10.0 mi Calm Calm - N/A   Clear
6:15 AM 23.0 °F - 21.2 °F 93% 30.29 in 10.0 mi Calm Calm - N/A   Clear
6:35 AM 21.2 °F 16.4 °F 21.2 °F 100% 30.27 in 10.0 mi SSE 3.5 mph - N/A   Clear
6:55 AM 21.2 °F - 21.2 °F 100% 30.27 in 10.0 mi Calm Calm - N/A   Clear
7:45 AM 21.2 °F - 19.4 °F 93% 30.27 in 10.0 mi Calm Calm - N/A   Clear
8:55 AM 26.6 °F - 24.8 °F 93% 30.27 in 10.0 mi Calm Calm - N/A   Clear
9:45 AM 30.2 °F - 26.6 °F 86% 30.27 in 10.0 mi Calm Calm - N/A   Clear
10:55 AM 33.8 °F - 24.8 °F 70% 30.25 in 10.0 mi Calm Calm - N/A   Clear
11:50 AM 35.6 °F - 24.8 °F 65% 30.21 in 10.0 mi Calm Calm - N/A   Clear
12:50 PM 35.6 °F - 24.8 °F 65% 30.16 in 10.0 mi Calm Calm - N/A   Clear
1:50 PM 37.4 °F - 24.8 °F 60% 30.14 in 10.0 mi Calm Calm - N/A   Clear
2:50 PM 35.6 °F - 24.8 °F 65% 30.13 in 10.0 mi Calm Calm - N/A   Clear
4:55 PM 35.6 °F - 26.6 °F 70% 30.11 in 10.0 mi Calm Calm - N/A   Overcast
5:35 PM 35.6 °F - 26.6 °F 70% 30.09 in 10.0 mi Calm Calm - N/A   Overcast
5:50 PM 35.6 °F - 28.4 °F 75% 30.09 in 10.0 mi Calm Calm - N/A   Overcast
5:55 PM 35.6 °F - 26.6 °F 70% 30.09 in 10.0 mi Calm Calm - N/A   Overcast
6:15 PM 35.6 °F 32.8 °F 28.4 °F 75% 30.09 in 10.0 mi SSW 3.5 mph - N/A   Overcast
6:35 PM 35.6 °F - 28.4 °F 75% 30.08 in 10.0 mi Calm Calm - N/A   Overcast
6:55 PM 35.6 °F - 28.4 °F 75% 30.09 in 10.0 mi Calm Calm - N/A   Overcast
7:15 PM 35.6 °F - 28.4 °F 75% 30.07 in 10.0 mi Calm Calm - N/A   Mostly Cloudy
7:35 PM 33.8 °F - 28.4 °F 81% 30.06 in 10.0 mi Calm Calm - N/A   Mostly Cloudy
7:55 PM 33.8 °F - 28.4 °F 81% 30.06 in 10.0 mi Calm Calm - N/A   Mostly Cloudy
8:15 PM 33.8 °F - 28.4 °F 81% 30.07 in 10.0 mi Calm Calm - N/A   Partly Cloudy
8:35 PM 33.8 °F - 28.4 °F 81% 30.05 in 10.0 mi Calm Calm - N/A   Clear
8:55 PM 33.8 °F 29.6 °F 28.4 °F 81% 30.04 in 10.0 mi SSE 4.6 mph - N/A   Clear
9:15 PM 33.8 °F - 30.2 °F 87% 30.05 in 10.0 mi Calm Calm - N/A   Clear
9:35 PM 33.8 °F - 28.4 °F 81% 30.04 in 10.0 mi Calm Calm - N/A   Clear
10:15 PM 32.0 °F - 30.2 °F 93% 30.03 in 10.0 mi Calm Calm - N/A   Partly Cloudy
10:35 PM 32.0 °F 26.4 °F 30.2 °F 93% 30.03 in 10.0 mi SSE 5.8 mph - N/A   Clear
10:55 PM 32.0 °F - 30.2 °F 93% 30.03 in 10.0 mi Calm Calm - N/A   Clear
11:15 PM 32.0 °F - 30.2 °F 93% 30.02 in 10.0 mi Calm Calm - N/A   Clear
11:35 PM 32.0 °F - 30.2 °F 93% 30.02 in 10.0 mi Calm Calm - N/A   Clear
11:55 PM 32.0 °F - 30.2 °F 93% 30.01 in 10.0 mi Calm Calm - N/A   Clear