Weather History for Dulles Airport, VA

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Sunday, February 5, 2012

  Actual Average Record
Temperature  
Mean Temperature 35 °F 34 °F  
Max Temperature 43 °F 44 °F 73 °F (1991)
Min Temperature 26 °F 25 °F -10 °F (1996)
Degree Days  
Heating Degree Days 30 31  
Month to date heating degree days 106 155  
Since 1 July heating degree days 2469 2939  
Cooling Degree Days 0 0  
Month to date cooling degree days 0 0  
Year to date cooling degree days 0 0  
Moisture  
Dew Point 30 °F    
Average Humidity 75    
Maximum Humidity 92    
Minimum Humidity 57    
Precipitation  
Precipitation 0.01 in 0.09 in 1.47 in (2010)
Month to date precipitation 0.19 0.49  
Year to date precipitation 2.04 3.17  
Snow  
Snow T in 0.30 in 14.90 in (2010)
Month to date snowfall T 1.6  
Since 1 July snowfall 2.3 12.9  
Snow Depth 0.00 in    
Sea Level Pressure  
Sea Level Pressure 30.17 in    
Wind  
Wind Speed 5 mph (NNW)    
Max Wind Speed 13 mph    
Max Gust Speed 16 mph    
Visibility 8 miles    
Events      
T = Trace of Precipitation, MM = Missing Value Source: NWS Daily Summary

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Daily Weather History Graph

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Astronomy

Feb. 05, 2012 Rise Set
Actual Time 7:12 AM EST 5:35 PM EST
Civil Twilight 6:44 AM EST 6:03 PM EST
Nautical Twilight 6:13 AM EST 6:34 PM EST
Astronomical Twilight 5:42 AM EST 7:06 PM EST
Moon 3:32 PM EST (2/5) 5:21 AM EST (2/5)
Length of Visible Light 11h 18m
Length of Day
10h 22m
Waxing Gibbous, 94% of the Moon is Illuminated
Feb 5
Waxing Gibbous
Feb 7
Full
Feb 14
Last Quarter
Feb 21
New
Feb 29
First Quarter

Hourly Weather History & Observations

Time (EST) Temp. Windchill Dew Point Humidity Pressure Visibility Wind Dir Wind Speed Gust Speed Precip Events Conditions
12:52 AM 35.1 °F 31.0 °F 33.1 °F 92% 30.12 in 5.0 mi NNW 4.6 mph - 0.00 in   Overcast
1:52 AM 35.1 °F - 34.0 °F 96% 30.11 in 3.0 mi Calm Calm - 0.00 in   Overcast
2:52 AM 35.1 °F 30.1 °F 34.0 °F 96% 30.10 in 3.0 mi North 5.8 mph - 0.00 in   Overcast
3:52 AM 35.1 °F 30.1 °F 33.1 °F 92% 30.10 in 6.0 mi North 5.8 mph - 0.00 in   Overcast
4:52 AM 35.1 °F - 34.0 °F 96% 30.10 in 5.0 mi Calm Calm - N/A   Overcast
5:52 AM 36.0 °F - 33.1 °F 89% 30.10 in 7.0 mi Calm Calm - 0.01 in   Overcast
6:52 AM 35.1 °F 30.1 °F 33.1 °F 92% 30.13 in 7.0 mi NNW 5.8 mph - N/A   Overcast
7:52 AM 36.0 °F 29.6 °F 32.0 °F 86% 30.14 in 5.0 mi North 8.1 mph - N/A   Overcast
8:52 AM 36.0 °F 30.3 °F 32.0 °F 86% 30.16 in 6.0 mi NNE 6.9 mph - N/A   Overcast
9:52 AM 37.0 °F 34.5 °F 30.0 °F 76% 30.16 in 10.0 mi NE 3.5 mph - N/A   Overcast
10:52 AM 37.9 °F 32.1 °F 30.9 °F 76% 30.19 in 10.0 mi North 8.1 mph - N/A   Overcast
11:52 AM 39.0 °F 31.8 °F 30.9 °F 73% 30.19 in 9.0 mi North 11.5 mph - N/A   Overcast
12:01 PM 39.2 °F 32.5 °F 30.2 °F 70% 30.18 in 9.0 mi North 10.4 mph - N/A   Overcast
12:27 PM 39.2 °F 32.5 °F 32.0 °F 75% 30.17 in 8.0 mi North 10.4 mph - N/A   Overcast
12:41 PM 39.2 °F 32.5 °F 30.2 °F 70% 30.17 in 8.0 mi North 10.4 mph - N/A   Overcast
12:52 PM 39.0 °F 32.3 °F 30.9 °F 73% 30.18 in 10.0 mi North 10.4 mph - N/A   Overcast
1:00 PM 39.2 °F 33.0 °F 30.2 °F 70% 30.18 in 10.0 mi North 9.2 mph - N/A   Overcast
1:52 PM 39.0 °F 34.0 °F 28.9 °F 67% 30.18 in 10.0 mi NNW 6.9 mph - N/A   Mostly Cloudy
2:52 PM 41.0 °F 38.0 °F 28.0 °F 60% 30.17 in 10.0 mi NNW 4.6 mph - N/A   Partly Cloudy
3:52 PM 43.0 °F 37.2 °F 28.9 °F 58% 30.17 in 10.0 mi NNW 10.4 mph - N/A   Scattered Clouds
4:52 PM 41.0 °F 35.8 °F 28.9 °F 62% 30.19 in 10.0 mi NW 8.1 mph - N/A   Overcast
5:52 PM 39.0 °F 34.0 °F 28.0 °F 65% 30.21 in 10.0 mi NW 6.9 mph - N/A   Partly Cloudy
6:52 PM 37.0 °F 34.5 °F 28.0 °F 70% 30.22 in 10.0 mi West 3.5 mph - N/A   Clear
7:52 PM 32.0 °F - 27.0 °F 82% 30.23 in 10.0 mi Calm Calm - N/A   Clear
8:52 PM 30.9 °F - 27.0 °F 85% 30.25 in 10.0 mi Calm Calm - N/A   Clear
9:52 PM 28.9 °F - 26.1 °F 89% 30.25 in 10.0 mi Calm Calm - N/A   Clear
10:52 PM 27.0 °F - 25.0 °F 92% 30.25 in 10.0 mi Calm Calm - N/A   Clear
11:52 PM 26.6 °F - 24.8 °F 93% 30.24 in 10.0 mi Calm Calm - N/A   Clear