History for Dulles Airport, VA

Friday, November 27, 2009 — View Current Conditions

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Recently Viewed Airport Codes: KIAD
Daily Summary
  Actual Average Record
Temperature
Mean Temperature 45°F 42°F  
Max Temperature 50°F 52°F 68°F (1976)
Min Temperature 40°F 31°F 11°F (1974)
Degree Days
Heating Degree Days 20 23  
Month to date heating degree days 393 518  
Since 1 July heating degree days 680 906  
Cooling Degree Days 0 0  
Month to date cooling degree days 0 0  
Year to date cooling degree days 1259 1072  
Moisture
Dew Point 31°F    
Average Humidity 61    
Maximum Humidity 76    
Minimum Humidity 45    
Precipitation
Precipitation T in 0.11 in 2.59 in (1993)
Month to date precipitation 3.45 2.98  
Year to date precipitation 42.38 38.40  
Snow
Snow 0.00 in 0.10 in in ()
Month to date snowfall 0.0 0.5  
Since 1 July snowfall 0.0 0.6  
Snow Depth 0.00 in    
Sea Level Pressure
Sea Level Pressure 29.71 in    
Wind
Wind Speed 17 mph (WNW)    
Max Wind Speed 33 mph    
Max Gust Speed 43 mph    
Visibility 10 miles    
Events      
T = Trace of Precipitation, MM = Missing Value Source: NWS Daily Summary

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Hourly Observations

Time(EST) Temperature Dew Point Humidity Sea Level Pressure Visibility Wind Direction Wind Speed Gust Speed Precipitation Events Conditions
12:52 AM 46.0°F 37.0°F 71% 29.69 in 10.0 miles NNW 13.8 mph - 0.00 in   Overcast
1:52 AM 46.0°F 32.0°F 58% 29.71 in 10.0 miles NNW 12.7 mph - N/A   Overcast
2:52 AM 45.0°F 28.9°F 53% 29.70 in 10.0 miles NNW 16.1 mph 23.0 mph N/A   Overcast
3:52 AM 43.0°F 28.9°F 58% 29.70 in 10.0 miles NNW 12.7 mph - N/A   Overcast
4:52 AM 43.0°F 30.0°F 60% 29.70 in 10.0 miles NW 9.2 mph - N/A   Overcast
5:52 AM 42.1°F 30.0°F 62% 29.70 in 10.0 miles NW 6.9 mph - N/A   Mostly Cloudy
6:52 AM 39.9°F 30.0°F 68% 29.70 in 10.0 miles WNW 5.8 mph - N/A   Mostly Cloudy
7:52 AM 42.1°F 30.9°F 65% 29.70 in 10.0 miles WNW 9.2 mph - N/A   Scattered Clouds
8:52 AM 46.0°F 33.1°F 61% 29.69 in 10.0 miles WNW 16.1 mph 26.5 mph N/A   Mostly Cloudy
9:52 AM 46.0°F 32.0°F 58% 29.70 in 10.0 miles WNW 21.9 mph 26.5 mph N/A   Mostly Cloudy
10:52 AM 48.0°F 32.0°F 54% 29.68 in 10.0 miles WNW 16.1 mph 32.2 mph N/A   Overcast
11:52 AM 48.9°F 32.0°F 52% 29.66 in 10.0 miles WNW 24.2 mph 33.4 mph N/A   Mostly Cloudy
12:52 PM 48.0°F 32.0°F 54% 29.66 in 10.0 miles West 23.0 mph 29.9 mph 0.00 in   Mostly Cloudy
1:52 PM 48.0°F 28.9°F 48% 29.66 in 10.0 miles NW 29.9 mph 41.4 mph N/A   Mostly Cloudy
2:52 PM 46.0°F 28.0°F 50% 29.70 in 10.0 miles WNW 18.4 mph 29.9 mph N/A   Mostly Cloudy
3:52 PM 46.0°F 27.0°F 47% 29.72 in 10.0 miles WNW 21.9 mph 32.2 mph N/A   Mostly Cloudy
4:52 PM 44.1°F 27.0°F 51% 29.73 in 10.0 miles WNW 25.3 mph 34.5 mph N/A   Mostly Cloudy
5:52 PM 43.0°F 26.1°F 51% 29.75 in 10.0 miles WNW 19.6 mph 39.1 mph N/A   Mostly Cloudy
6:52 PM 42.1°F 25.0°F 51% 29.78 in 10.0 miles WNW 19.6 mph 35.7 mph N/A   Overcast
7:52 PM 42.1°F 25.0°F 51% 29.80 in 10.0 miles WNW 13.8 mph 24.2 mph N/A   Mostly Cloudy
8:52 PM 39.9°F 25.0°F 55% 29.80 in 10.0 miles WNW 17.3 mph 28.8 mph N/A   Mostly Cloudy
9:52 PM 41.0°F 26.1°F 55% 29.82 in 10.0 miles WNW 9.2 mph 19.6 mph N/A   Mostly Cloudy
10:52 PM 41.0°F 26.1°F 55% 29.82 in 10.0 miles WNW 11.5 mph 20.7 mph N/A   Mostly Cloudy
11:52 PM 41.0°F 27.0°F 57% 29.78 in 10.0 miles WNW 26.5 mph 33.4 mph N/A   Partly Cloudy