Weather History for Dulles Airport, VA

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Sunday, April 14, 2013

  Actual Average Record
Temperature  
Mean Temperature 53 °F 54 °F  
Max Temperature 67 °F 66 °F 84 °F (1967)
Min Temperature 39 °F 42 °F 20 °F (1975)
Degree Days  
Heating Degree Days 12 12  
Month to date heating degree days 158 190  
Since 1 July heating degree days 4284 4427  
Cooling Degree Days 0 1  
Month to date cooling degree days 24 2  
Year to date cooling degree days 24 5  
Growing Degree Days 2 (Base 50)    
Moisture  
Dew Point 36 °F    
Average Humidity 56    
Maximum Humidity 79    
Minimum Humidity 32    
Precipitation  
Precipitation 0.00 in 0.11 in 2.13 in (1970)
Month to date precipitation 0.82 1.66  
Year to date precipitation 9.31 10.46  
Snow  
Snow 0.00 in 0.00 in 0.00 in (2002)
Month to date snowfall 0.0 0.2  
Since 1 July snowfall 12.7 21.9  
Snow Depth 0.00 in    
Sea Level Pressure  
Sea Level Pressure 30.08 in    
Wind  
Wind Speed 6 mph (North)    
Max Wind Speed 17 mph    
Max Gust Speed 25 mph    
Visibility 10 miles    
Events      
T = Trace of Precipitation, MM = Missing Value Source: NWS Daily Summary

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Date:

Astronomy

Apr. 14, 2013 Rise Set
Actual Time 6:34 AM EDT 7:46 PM EDT
Civil Twilight 6:06 AM EDT 8:13 PM EDT
Nautical Twilight 5:34 AM EDT 8:46 PM EDT
Astronomical Twilight 4:59 AM EDT 9:21 PM EDT
Moon 9:11 AM EDT (4/14) 11:56 PM EDT (4/14)
Length of Visible Light 14h 06m
Length of Day
13h 11m
Waxing Crescent, 17% of the Moon is Illuminated
Apr 14
Waxing Crescent
Apr 18
First Quarter
Apr 25
Full
May 2
Last Quarter
May 9
New

Hourly Weather History & Observations

Time (EDT) Temp. Windchill Dew Point Humidity Pressure Visibility Wind Dir Wind Speed Gust Speed Precip Events Conditions
12:52 AM 54.0 °F - 33.1 °F 45% 29.98 in 10.0 mi North 8.1 mph - N/A   Clear
1:52 AM 52.0 °F - 35.1 °F 53% 29.99 in 10.0 mi NNW 4.6 mph - N/A   Clear
2:52 AM 51.1 °F - 36.0 °F 56% 29.99 in 10.0 mi North 3.5 mph - N/A   Clear
3:52 AM 50.0 °F - 35.1 °F 57% 30.00 in 10.0 mi North 5.8 mph - N/A   Clear
4:52 AM 43.0 °F 41.3 °F 35.1 °F 74% 30.01 in 10.0 mi North 3.5 mph - N/A   Clear
5:52 AM 41.0 °F - 35.1 °F 79% 30.02 in 10.0 mi Calm Calm - N/A   Clear
6:52 AM 42.1 °F 40.2 °F 35.1 °F 76% 30.07 in 10.0 mi NW 3.5 mph - N/A   Partly Cloudy
7:52 AM 48.9 °F - 35.1 °F 59% 30.11 in 10.0 mi North 10.4 mph - N/A   Clear
8:52 AM 51.1 °F - 33.1 °F 50% 30.12 in 10.0 mi NNW 12.7 mph - N/A   Clear
9:52 AM 55.0 °F - 34.0 °F 45% 30.15 in 10.0 mi North 10.4 mph - N/A   Clear
10:52 AM 57.0 °F - 34.0 °F 42% 30.14 in 10.0 mi NNW 10.4 mph - N/A   Partly Cloudy
11:52 AM 60.1 °F - 36.0 °F 41% 30.14 in 10.0 mi NNW 13.8 mph - N/A   Mostly Cloudy
12:52 PM 61.0 °F - 34.0 °F 36% 30.11 in 10.0 mi NNW 13.8 mph 23.0 mph N/A   Mostly Cloudy
1:52 PM 64.0 °F - 35.1 °F 34% 30.10 in 10.0 mi WNW 10.4 mph 18.4 mph N/A   Mostly Cloudy
2:52 PM 64.9 °F - 35.1 °F 33% 30.10 in 10.0 mi NW 6.9 mph - N/A   Overcast
3:52 PM 66.0 °F - 35.1 °F 32% 30.09 in 10.0 mi Calm Calm - N/A   Overcast
4:52 PM 66.9 °F - 37.0 °F 33% 30.08 in 10.0 mi NW 3.5 mph - N/A   Overcast
5:52 PM 66.0 °F - 37.0 °F 34% 30.09 in 10.0 mi Calm Calm - N/A   Overcast
6:52 PM 64.0 °F - 39.9 °F 41% 30.09 in 10.0 mi ENE 8.1 mph - N/A   Overcast
7:52 PM 62.1 °F - 37.0 °F 39% 30.09 in 10.0 mi ENE 8.1 mph - N/A   Overcast
8:52 PM 61.0 °F - 36.0 °F 39% 30.11 in 10.0 mi East 5.8 mph - N/A   Mostly Cloudy
9:52 PM 60.1 °F - 37.0 °F 42% 30.12 in 10.0 mi SE 4.6 mph - N/A   Mostly Cloudy
10:52 PM 59.0 °F - 39.9 °F 49% 30.12 in 10.0 mi SE 5.8 mph - N/A   Clear
11:52 PM 57.9 °F - 42.1 °F 56% 30.13 in 10.0 mi SSE 3.5 mph - N/A   Scattered Clouds