Dulles Airport, VA

3:37 AM EDT on May 23, 2018 (GMT -0400)
Washington Dulles International

Weather History for KIAD - February, 2012

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Tuesday, February 14, 2012

  Actual Average Record
Temperature  
Mean Temperature 42 °F 36 °F  
Max Temperature 53 °F 46 °F 71 °F (1990)
Min Temperature 31 °F 26 °F -5 °F (1979)
Degree Days  
Heating Degree Days 23 29  
Month to date heating degree days 366 422  
Since 1 July heating degree days 2729 3206  
Cooling Degree Days 0 0  
Month to date cooling degree days 0 0  
Year to date cooling degree days 0 0  
Moisture  
Dew Point 26 °F    
Average Humidity 54    
Maximum Humidity 72    
Minimum Humidity 35    
Precipitation  
Precipitation T in 0.10 in 1.27 in (1984)
Month to date precipitation 0.49 1.38  
Year to date precipitation 2.34 4.06  
Snow  
Snow 0.00 in 0.20 in 3.40 in (1970)
Month to date snowfall 1.4 4.2  
Since 1 July snowfall 3.7 15.5  
Snow Depth 0.00 in    
Sea Level Pressure  
Sea Level Pressure 30.02 in    
Wind  
Wind Speed 4 mph (South)    
Max Wind Speed 21 mph    
Max Gust Speed 26 mph    
Visibility 10 miles    
Events Rain    
T = Trace of Precipitation, MM = Missing Value Source: NWS Daily Summary

Daily Weather History Graph

Daily Weather History Graph

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Astronomy

Feb. 14, 2012 Rise Set
Actual Time 7:03 AM EST 5:45 PM EST
Civil Twilight 6:35 AM EST 6:13 PM EST
Nautical Twilight 6:04 AM EST 6:44 PM EST
Astronomical Twilight 5:33 AM EST 7:15 PM EST
Moon 12:44 AM EST (2/14) 10:50 AM EST (2/14)
Length of Visible Light 11h 37m
Length of Day
10h 42m
Waning Gibbous, 50% of the Moon is Illuminated
Feb 14
Waning Gibbous
Feb 14
Last Quarter
Feb 21
New
Feb 29
First Quarter
Mar 8
Full

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 32.0 °F - 23.0 °F 69% 30.09 in 10.0 mi Calm Calm - N/A   Overcast
1:52 AM 33.1 °F - 23.0 °F 66% 30.08 in 10.0 mi Calm Calm - N/A   Overcast
2:52 AM 32.0 °F - 24.1 °F 73% 30.08 in 10.0 mi Calm Calm - N/A   Overcast
3:52 AM 33.1 °F - 24.1 °F 70% 30.07 in 10.0 mi Calm Calm - N/A   Overcast
4:52 AM 35.1 °F - 21.9 °F 59% 30.07 in 10.0 mi Calm Calm - N/A   Overcast
5:52 AM 33.1 °F 28.7 °F 23.0 °F 66% 30.07 in 10.0 mi SSW 4.6 mph - N/A   Overcast
6:52 AM 34.0 °F - 23.0 °F 64% 30.06 in 10.0 mi Calm Calm - N/A   Overcast
7:52 AM 34.0 °F - 24.1 °F 67% 30.08 in 10.0 mi Calm Calm - N/A   Overcast
8:52 AM 37.9 °F 34.4 °F 24.1 °F 57% 30.08 in 10.0 mi South 4.6 mph - N/A   Overcast
9:52 AM 42.1 °F 37.7 °F 21.0 °F 43% 30.08 in 10.0 mi South 6.9 mph - N/A   Overcast
10:52 AM 44.1 °F 38.1 °F 21.0 °F 40% 30.06 in 10.0 mi SSW 11.5 mph 19.6 mph N/A   Mostly Cloudy
11:52 AM 46.9 °F - 21.9 °F 37% 30.02 in 10.0 mi SSW 9.2 mph - N/A   Mostly Cloudy
12:52 PM 51.1 °F - 26.1 °F 38% 29.97 in 10.0 mi South 15.0 mph 20.7 mph N/A   Mostly Cloudy
1:52 PM 53.1 °F - 26.1 °F 35% 29.94 in 10.0 mi SW 9.2 mph 21.9 mph N/A   Overcast
2:52 PM 51.1 °F - 27.0 °F 39% 29.94 in 10.0 mi SW 12.7 mph - N/A   Overcast
3:52 PM 51.1 °F - 27.0 °F 39% 29.94 in 10.0 mi South 8.1 mph - N/A   Overcast
4:30 PM 50.0 °F - 30.2 °F 47% 29.94 in 10.0 mi SW 12.7 mph 20.7 mph 0.00 in Rain Light Rain
4:52 PM 50.0 °F - 30.9 °F 48% 29.95 in 10.0 mi Calm Calm - 0.00 in   Mostly Cloudy
5:52 PM 46.9 °F - 32.0 °F 56% 29.97 in 10.0 mi Calm Calm - N/A   Mostly Cloudy
6:52 PM 42.1 °F - 33.1 °F 70% 29.99 in 10.0 mi Calm Calm - N/A   Mostly Cloudy
7:52 PM 45.0 °F 42.6 °F 30.0 °F 56% 29.99 in 10.0 mi SE 4.6 mph - N/A   Mostly Cloudy
8:52 PM 46.9 °F - 28.9 °F 50% 29.99 in 10.0 mi SSE 4.6 mph - N/A   Overcast
9:52 PM 48.0 °F - 30.0 °F 50% 29.99 in 10.0 mi South 5.8 mph - N/A   Mostly Cloudy
10:52 PM 46.0 °F - 30.0 °F 54% 30.00 in 10.0 mi Calm Calm - N/A   Overcast
11:52 PM 44.1 °F - 30.9 °F 60% 30.01 in 10.0 mi Calm Calm - N/A   Mostly Cloudy