Weather History for Dulles Airport, VA

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Monday, January 6, 2014

  Actual Average Record
Temperature  
Mean Temperature 28 °F 33 °F  
Max Temperature 44 °F 42 °F 71 °F (2007)
Min Temperature 11 °F 24 °F 4 °F (1977)
Degree Days  
Heating Degree Days 37 32  
Month to date heating degree days 224 192  
Since 1 July heating degree days 1981 1990  
Cooling Degree Days 0 0  
Month to date cooling degree days 0 0  
Year to date cooling degree days 0 0  
Moisture  
Dew Point 23 °F    
Average Humidity 67    
Maximum Humidity 100    
Minimum Humidity 33    
Precipitation  
Precipitation 0.08 in 0.08 in 0.94 in (1995)
Month to date precipitation 0.67 0.48  
Year to date precipitation 0.67 0.48  
Snow  
Snow T in 0.20 in 3.90 in (1989)
Month to date snowfall 3.0 1.0  
Since 1 July snowfall 7.7 5.0  
Snow Depth 0.00 in    
Sea Level Pressure  
Sea Level Pressure 29.71 in    
Wind  
Wind Speed 15 mph (West)    
Max Wind Speed 30 mph    
Max Gust Speed 40 mph    
Visibility 8 miles    
Events Fog , Rain , Snow    
T = Trace of Precipitation, MM = Missing Value Source: NWS Daily Summary

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Date:

Astronomy

Jan. 06, 2014 Rise Set
Actual Time 7:28 AM EST 5:02 PM EST
Civil Twilight 6:59 AM EST 5:32 PM EST
Nautical Twilight 6:25 AM EST 6:05 PM EST
Astronomical Twilight 5:53 AM EST 6:38 PM EST
Moon 10:46 AM EST (1/6) 11:30 PM EST (1/6)
Length of Visible Light 10h 33m
Length of Day
9h 34m
Waxing Crescent, 34% of the Moon is Illuminated
Jan 6
Waxing Crescent
Jan 7
First Quarter
Jan 15
Full
Jan 24
Last Quarter
Jan 30
New

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 39.0 °F 31.8 °F 37.0 °F 93% 29.65 in 0.2 mi South 11.5 mph - N/A Fog Fog
1:52 AM 39.9 °F 31.4 °F 39.0 °F 97% 29.62 in 0.2 mi South 16.1 mph 23.0 mph N/A   Overcast
2:03 AM 39.2 °F 33.0 °F 39.2 °F 100% 29.62 in 4.0 mi South 9.2 mph - N/A   Mostly Cloudy
2:19 AM 39.2 °F 33.0 °F 39.2 °F 100% 29.60 in 4.0 mi South 9.2 mph - N/A   Mostly Cloudy
2:52 AM 42.1 °F 36.1 °F 39.0 °F 89% 29.58 in 7.0 mi South 10.4 mph - N/A   Overcast
3:16 AM 42.8 °F 36.6 °F 39.2 °F 87% 29.57 in 10.0 mi South 11.5 mph - N/A   Overcast
3:52 AM 42.1 °F 36.6 °F 39.9 °F 92% 29.56 in 10.0 mi South 9.2 mph - 0.00 in Rain Light Rain
4:31 AM 42.8 °F 38.6 °F 41.0 °F 93% 29.52 in 5.0 mi South 6.9 mph - 0.03 in Rain Light Rain
4:52 AM 42.1 °F 37.1 °F 41.0 °F 96% 29.52 in 9.0 mi South 8.1 mph - 0.04 in   Overcast
5:52 AM 43.0 °F 37.2 °F 42.1 °F 97% 29.52 in 5.0 mi South 10.4 mph 18.4 mph 0.03 in Rain Light Rain
6:52 AM 43.0 °F - 41.0 °F 93% 29.56 in 7.0 mi Calm Calm - 0.01 in   Overcast
7:24 AM 42.8 °F - 39.2 °F 87% 29.56 in 7.0 mi Calm Calm - N/A   Overcast
7:52 AM 41.0 °F - 39.0 °F 93% 29.58 in 4.0 mi Calm Calm - N/A Fog Shallow Fog
8:18 AM 41.0 °F - 39.2 °F 93% 29.58 in 4.0 mi Calm Calm - N/A Fog Shallow Fog
8:35 AM 42.8 °F 38.6 °F 39.2 °F 87% 29.60 in 4.0 mi Variable 6.9 mph - N/A Fog Shallow Fog
8:52 AM 39.9 °F 31.4 °F 32.0 °F 73% 29.63 in 10.0 mi NW 16.1 mph 31.1 mph 0.00 in Rain Light Rain
8:56 AM 39.2 °F 29.3 °F 30.2 °F 70% 29.63 in 10.0 mi NW 20.7 mph 31.1 mph 0.00 in Rain Light Rain
9:52 AM 37.9 °F 28.2 °F 26.1 °F 62% 29.68 in 10.0 mi NW 18.4 mph 34.5 mph 0.00 in Snow Light Snow
10:37 AM 37.4 °F 26.6 °F 21.2 °F 52% 29.68 in 10.0 mi NW 21.9 mph 32.2 mph 0.00 in   Mostly Cloudy
10:52 AM 37.0 °F 27.4 °F 21.0 °F 52% 29.68 in 10.0 mi NW 17.3 mph 28.8 mph 0.00 in   Mostly Cloudy
11:52 AM 37.0 °F 26.2 °F 19.0 °F 48% 29.68 in 10.0 mi NW 21.9 mph 33.4 mph N/A   Mostly Cloudy
12:52 PM 37.0 °F 27.4 °F 19.9 °F 50% 29.68 in 10.0 mi WNW 17.3 mph 26.5 mph N/A   Mostly Cloudy
1:52 PM 35.1 °F 23.8 °F 17.1 °F 48% 29.69 in 10.0 mi NW 20.7 mph 33.4 mph N/A   Mostly Cloudy
2:52 PM 35.1 °F 24.8 °F 14.0 °F 42% 29.72 in 10.0 mi WNW 17.3 mph 32.2 mph N/A   Mostly Cloudy
3:52 PM 33.1 °F 22.2 °F 12.9 °F 43% 29.74 in 10.0 mi WNW 17.3 mph 32.2 mph N/A   Mostly Cloudy
4:52 PM 30.0 °F 18.7 °F 12.0 °F 47% 29.77 in 10.0 mi NW 16.1 mph - N/A   Mostly Cloudy
5:52 PM 27.0 °F 14.7 °F 9.0 °F 47% 29.83 in 10.0 mi NW 16.1 mph 29.9 mph N/A   Mostly Cloudy
6:52 PM 25.0 °F 9.5 °F 3.0 °F 39% 29.89 in 10.0 mi WNW 24.2 mph 33.4 mph N/A   Partly Cloudy
7:35 PM 19.4 °F 2.1 °F -0.4 °F 42% 29.94 in 10.0 mi NW 24.2 mph 34.5 mph N/A   Clear
7:52 PM 19.0 °F 2.7 °F -4.0 °F 36% 29.97 in 10.0 mi NW 20.7 mph 34.5 mph N/A   Clear
8:52 PM 17.1 °F 1.0 °F -8.0 °F 33% 30.01 in 10.0 mi WNW 18.4 mph 40.3 mph N/A   Clear
9:52 PM 12.0 °F -6.5 °F -9.9 °F 37% 30.07 in 10.0 mi NW 20.7 mph 31.1 mph N/A   Clear
10:52 PM 12.0 °F -4.5 °F -11.0 °F 35% 30.09 in 10.0 mi WNW 16.1 mph 31.1 mph N/A   Partly Cloudy
11:52 PM 12.0 °F -4.5 °F -13.0 °F 32% 30.12 in 10.0 mi WNW 16.1 mph 27.6 mph N/A   Clear