Weather History for Dulles Airport, VA

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Wednesday, February 13, 2013

  Actual Average Record
Temperature  
Mean Temperature 39 °F 36 °F  
Max Temperature 46 °F 46 °F 65 °F (1974)
Min Temperature 32 °F 26 °F -8 °F (1983)
Degree Days  
Heating Degree Days 26 29  
Month to date heating degree days 399 393  
Since 1 July heating degree days 2935 3177  
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 96    
Minimum Humidity 53    
Precipitation  
Precipitation 0.26 in 0.10 in 1.29 in (1972)
Month to date precipitation 0.60 1.28  
Year to date precipitation 4.30 3.96  
Snow  
Snow 0.40 in 0.30 in 11.70 in (2014)
Month to date snowfall 1.3 4.0  
Since 1 July snowfall 5.3 15.3  
Snow Depth 0.00 in    
Sea Level Pressure  
Sea Level Pressure 29.78 in    
Wind  
Wind Speed 5 mph (North)    
Max Wind Speed 10 mph    
Max Gust Speed 14 mph    
Visibility 6 miles    
Events Rain , Snow    
T = Trace of Precipitation, MM = Missing Value Source: NWS Daily Summary

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Date:

Astronomy

Feb. 13, 2013 Rise Set
Actual Time 7:03 AM EST 5:45 PM EST
Civil Twilight 6:35 AM EST 6:12 PM EST
Nautical Twilight 6:04 AM EST 6:44 PM EST
Astronomical Twilight 5:33 AM EST 7:15 PM EST
Moon 8:33 AM EST (2/13) 9:43 PM EST (2/13)
Length of Visible Light 11h 36m
Length of Day
10h 42m
Waxing Crescent, 13% of the Moon is Illuminated
Feb 13
Waxing Crescent
Feb 17
First Quarter
Feb 25
Full
Mar 4
Last Quarter
Mar 11
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 39.9 °F 37.8 °F 28.0 °F 63% 29.96 in 10.0 mi NNE 3.5 mph - N/A   Partly Cloudy
1:52 AM 36.0 °F 31.1 °F 27.0 °F 70% 29.93 in 10.0 mi NE 5.8 mph - N/A   Partly Cloudy
2:52 AM 33.1 °F 30.0 °F 26.1 °F 75% 29.92 in 10.0 mi NNE 3.5 mph - N/A   Partly Cloudy
3:52 AM 34.0 °F 28.8 °F 27.0 °F 75% 29.89 in 10.0 mi North 5.8 mph - N/A   Scattered Clouds
4:52 AM 33.1 °F 28.7 °F 26.1 °F 75% 29.91 in 10.0 mi North 4.6 mph - N/A   Scattered Clouds
5:52 AM 33.1 °F 28.7 °F 26.1 °F 75% 29.90 in 10.0 mi North 4.6 mph - N/A   Mostly Cloudy
6:52 AM 33.1 °F 28.7 °F 26.1 °F 75% 29.88 in 10.0 mi North 4.6 mph - N/A   Overcast
7:52 AM 35.1 °F - 25.0 °F 67% 29.90 in 10.0 mi Calm Calm - N/A   Overcast
8:52 AM 35.1 °F 31.0 °F 26.1 °F 70% 29.89 in 10.0 mi NNW 4.6 mph - N/A   Overcast
9:48 AM 28.4 °F - 24.8 °F 86% 29.85 in 7.0 mi Calm Calm - N/A   Clear
9:52 AM 37.9 °F 35.5 °F 27.0 °F 65% 29.87 in 10.0 mi NNW 3.5 mph - N/A   Overcast
10:52 AM 39.9 °F 35.8 °F 26.1 °F 58% 29.85 in 10.0 mi ENE 5.8 mph - N/A   Overcast
11:52 AM 42.1 °F 40.2 °F 27.0 °F 55% 29.80 in 10.0 mi SE 3.5 mph - N/A   Mostly Cloudy
12:52 PM 45.0 °F 42.6 °F 28.9 °F 53% 29.75 in 10.0 mi Variable 4.6 mph - N/A   Overcast
1:52 PM 45.0 °F - 28.0 °F 52% 29.72 in 10.0 mi Calm Calm - N/A   Overcast
2:52 PM 45.0 °F 41.8 °F 30.0 °F 56% 29.68 in 10.0 mi ENE 5.8 mph - 0.00 in   Overcast
3:52 PM 42.1 °F 37.7 °F 33.1 °F 70% 29.67 in 9.0 mi ENE 6.9 mph - 0.00 in Rain Light Rain
4:33 PM 39.2 °F 37.0 °F 35.6 °F 87% 29.67 in 3.0 mi ENE 3.5 mph - 0.01 in Rain Light Rain
4:43 PM 39.2 °F 37.0 °F 33.8 °F 81% 29.67 in 3.0 mi NNE 3.5 mph - 0.02 in Rain Light Rain
4:52 PM 39.9 °F 36.7 °F 35.1 °F 83% 29.68 in 2.5 mi NE 4.6 mph - 0.02 in Rain Light Rain
5:24 PM 39.2 °F 35.0 °F 35.6 °F 87% 29.67 in 2.5 mi North 5.8 mph - 0.03 in Rain Light Rain
5:52 PM 37.0 °F 32.4 °F 34.0 °F 89% 29.68 in 2.5 mi NNW 5.8 mph - 0.06 in Rain Light Rain
6:08 PM 37.4 °F 31.4 °F 33.8 °F 87% 29.67 in 2.5 mi NNW 8.1 mph - 0.01 in Rain Light Rain
6:43 PM 37.4 °F 31.4 °F 33.8 °F 87% 29.68 in 2.5 mi NNE 8.1 mph - 0.03 in Rain Light Rain
6:46 PM 37.4 °F 32.1 °F 33.8 °F 87% 29.68 in 4.0 mi NNE 6.9 mph - 0.03 in Rain Light Rain
6:52 PM 37.0 °F 30.4 °F 35.1 °F 93% 29.70 in 4.0 mi North 9.2 mph - 0.03 in Rain Light Rain
7:15 PM 35.6 °F 28.6 °F 33.8 °F 93% 29.70 in 1.0 mi North 9.2 mph - 0.02 in Rain , Snow Light Rain
7:31 PM 33.8 °F 27.0 °F 32.0 °F 93% 29.71 in 1.0 mi North 8.1 mph - 0.06 in Rain , Snow Light Rain
7:52 PM 33.1 °F 26.1 °F 32.0 °F 96% 29.72 in 1.0 mi North 8.1 mph - 0.08 in Rain , Snow Light Rain
8:52 PM 33.1 °F 26.1 °F 32.0 °F 96% 29.73 in 1.0 mi NW 8.1 mph - 0.03 in Rain , Snow Light Rain
8:55 PM 33.8 °F 27.0 °F 32.0 °F 93% 29.73 in 0.5 mi NW 8.1 mph - 0.00 in Rain , Snow Light Rain
9:52 PM 33.1 °F 27.7 °F 32.0 °F 96% 29.75 in 1.5 mi NNW 5.8 mph - 0.04 in Snow Light Snow
10:15 PM 33.8 °F 27.7 °F 32.0 °F 93% 29.75 in 2.0 mi North 6.9 mph - N/A   Overcast
10:52 PM 34.0 °F 28.0 °F 32.0 °F 92% 29.78 in 2.5 mi NW 6.9 mph - N/A   Overcast
11:52 PM 33.1 °F 26.9 °F 32.0 °F 96% 29.79 in 4.0 mi NW 6.9 mph - N/A   Overcast