History for Dulles Airport, VA

Thursday, November 26, 2009 — View Current Conditions

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Recently Viewed Airport Codes: KIAD | KFAT
Daily Summary
  Actual Average Record
Temperature
Mean Temperature 45°F 42°F  
Max Temperature 50°F 53°F 75°F (1990)
Min Temperature 40°F 31°F 16°F (1974)
Degree Days
Heating Degree Days 20 23  
Month to date heating degree days 373 495  
Since 1 July heating degree days 660 883  
Cooling Degree Days 0 0  
Month to date cooling degree days 0 0  
Year to date cooling degree days 1259 1072  
Moisture
Dew Point 39°F    
Average Humidity 90    
Maximum Humidity 100    
Minimum Humidity 80    
Precipitation
Precipitation 0.03 in 0.11 in 1.03 in (1996)
Month to date precipitation 3.45 2.87  
Year to date precipitation 42.38 38.29  
Snow
Snow 0.00 in 0.10 in in ()
Month to date snowfall 0.0 0.4  
Since 1 July snowfall 0.0 0.5  
Snow Depth 0.00 in    
Sea Level Pressure
Sea Level Pressure 29.91 in    
Wind
Wind Speed 4 mph (NE)    
Max Wind Speed 22 mph    
Max Gust Speed 29 mph    
Visibility 2 miles    
Events Fog , Rain    
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
12:36 AM 41.0°F 39.2°F 93% 29.93 in 2.0 miles Calm Calm - N/A Fog Patches of Fog
12:52 AM 41.0°F 39.0°F 93% 29.93 in 2.0 miles Calm Calm - N/A Fog Patches of Fog
1:04 AM 41.0°F 39.2°F 93% 29.93 in 3.0 miles Calm Calm - N/A Fog Patches of Fog
1:33 AM 39.2°F 37.4°F 93% 29.93 in 1.0 miles Calm Calm - N/A Fog Patches of Fog
1:52 AM 41.0°F 37.9°F 89% 29.93 in 1.0 miles NW 3.5 mph - N/A Fog Patches of Fog
2:07 AM 41.0°F 39.2°F 93% 29.93 in 0.2 miles Calm Calm - N/A Fog Fog
2:52 AM 42.1°F 41.0°F 96% 29.93 in 0.1 miles Calm Calm - N/A Fog Fog
2:59 AM 42.8°F 41.0°F 93% 29.92 in 0.2 miles Calm Calm - N/A Fog Fog
3:28 AM 44.6°F 42.8°F 93% 29.92 in 0.0 miles NNW 4.6 mph - N/A Fog Fog
3:52 AM 44.1°F 42.1°F 93% 29.92 in 0.1 miles Calm Calm - N/A Fog Fog
4:52 AM 44.1°F 43.0°F 96% 29.92 in 0.1 miles NE 3.5 mph - N/A Fog Fog
5:52 AM 45.0°F 43.0°F 93% 29.92 in 0.1 miles NNW 3.5 mph - N/A Fog Fog
5:59 AM 44.6°F 42.8°F 93% 29.92 in 0.2 miles North 4.6 mph - N/A Fog Fog
6:52 AM 45.0°F 43.0°F 93% 29.93 in 0.1 miles North 3.5 mph - N/A Fog Fog
7:52 AM 45.0°F 43.0°F 93% 29.94 in 0.1 miles NE 3.5 mph - N/A Fog Fog
8:52 AM 45.0°F 44.1°F 97% 29.93 in 0.1 miles Calm Calm - N/A Fog Fog
9:52 AM 46.9°F 45.0°F 93% 29.93 in 0.1 miles North 3.5 mph - N/A Fog Fog
10:25 AM 46.4°F 46.4°F 100% 29.92 in 0.2 miles Calm Calm - N/A Fog Fog
10:52 AM 48.0°F 46.0°F 93% 29.91 in 0.5 miles Calm Calm - N/A Fog Fog
11:27 AM 48.2°F 46.4°F 93% 29.88 in 0.8 miles East 4.6 mph - N/A   Overcast
11:52 AM 48.9°F 46.9°F 93% 29.88 in 0.8 miles East 4.6 mph - N/A   Overcast
12:16 PM 48.2°F 46.4°F 93% 29.86 in 1.0 miles ESE 4.6 mph - N/A   Overcast
12:45 PM 48.2°F 46.4°F 93% 29.85 in 1.5 miles SSE 3.5 mph - N/A   Overcast
12:52 PM 48.9°F 46.9°F 93% 29.85 in 1.5 miles ESE 3.5 mph - N/A   Overcast
1:36 PM 50.0°F 46.4°F 87% 29.83 in 2.0 miles ESE 4.6 mph - N/A   Overcast
1:52 PM 50.0°F 46.9°F 89% 29.82 in 2.0 miles SE 3.5 mph - N/A   Overcast
2:52 PM 50.0°F 46.9°F 89% 29.81 in 2.0 miles Calm Calm - N/A   Overcast
3:47 PM 50.0°F 46.4°F 87% 29.79 in 0.5 miles East 4.6 mph - N/A   Overcast
3:52 PM 50.0°F 46.9°F 89% 29.80 in 0.5 miles East 3.5 mph - N/A Fog Fog
4:52 PM 50.0°F 46.9°F 89% 29.77 in 0.5 miles ESE 6.9 mph - N/A Fog Fog
5:21 PM 50.0°F 46.4°F 87% 29.76 in 2.0 miles East 3.5 mph - N/A   Overcast
5:52 PM 50.0°F 46.9°F 89% 29.75 in 2.0 miles East 4.6 mph - N/A   Overcast
6:17 PM 50.0°F 46.4°F 87% 29.76 in 2.0 miles ESE 3.5 mph - N/A   Overcast
6:52 PM 50.0°F 46.9°F 89% 29.76 in 2.0 miles Calm Calm - N/A   Overcast
7:38 PM 50.0°F 46.4°F 87% 29.74 in 1.8 miles Calm Calm - N/A   Overcast
7:52 PM 50.0°F 46.9°F 89% 29.74 in 1.2 miles Calm Calm - 0.00 in   Light Drizzle
8:31 PM 50.0°F 46.4°F 87% 29.73 in 1.5 miles Calm Calm - 0.00 in Rain Light Rain
8:52 PM 50.0°F 46.9°F 89% 29.73 in 1.5 miles North 3.5 mph - 0.01 in Rain Light Rain
9:03 PM 50.0°F 46.4°F 87% 29.73 in 1.5 miles NW 8.1 mph - 0.00 in Rain Light Rain
9:37 PM 48.2°F 42.8°F 82% 29.74 in 1.5 miles NW 13.8 mph 21.9 mph 0.01 in Rain Light Rain
9:40 PM 48.2°F 42.8°F 82% 29.74 in 1.5 miles NW 15.0 mph - 0.01 in Rain Light Rain
9:43 PM 48.2°F 42.8°F 82% 29.74 in 6.0 miles NW 15.0 mph - 0.01 in Rain Light Rain
9:52 PM 48.2°F 42.8°F 82% 29.74 in 10.0 miles NNW 16.1 mph - N/A Rain Light Rain
10:03 PM 48.2°F 42.8°F 82% 29.74 in 10.0 miles NNW 12.7 mph - 0.00 in Rain Light Rain
10:52 PM 46.9°F 41.0°F 80% 29.73 in 10.0 miles NNW 12.7 mph - 0.00 in Rain Light Rain
11:52 PM 46.9°F 39.0°F 74% 29.70 in 10.0 miles NNW 18.4 mph 25.3 mph 0.01 in Rain Light Rain