Weather History for Dulles Airport, VA

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Monday, November 19, 2012

  Actual Average Record
Temperature  
Mean Temperature 44 °F 45 °F  
Max Temperature 53 °F 56 °F 76 °F (1985)
Min Temperature 35 °F 35 °F 13 °F (2014)
Degree Days  
Heating Degree Days 21 20  
Month to date heating degree days 395 318  
Since 1 July heating degree days 708 674  
Cooling Degree Days 0 0  
Month to date cooling degree days 0 0  
Year to date cooling degree days 1436 1176  
Moisture  
Dew Point 37 °F    
Average Humidity 72    
Maximum Humidity 85    
Minimum Humidity 59    
Precipitation  
Precipitation 0.00 in 0.12 in 1.93 in (2003)
Month to date precipitation 1.06 2.15  
Year to date precipitation 32.69 37.32  
Snow  
Snow 0.00 in 0.00 in T in (1984)
Month to date snowfall T 0.1  
Since 1 July snowfall T 0.1  
Snow Depth 0.00 in    
Sea Level Pressure  
Sea Level Pressure 30.38 in    
Wind  
Wind Speed 7 mph (North)    
Max Wind Speed 13 mph    
Max Gust Speed 18 mph    
Visibility 10 miles    
Events      
T = Trace of Precipitation, MM = Missing Value Source: NWS Daily Summary

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Date:

Astronomy

Nov. 19, 2012 Rise Set
Actual Time 6:57 AM EST 4:52 PM EST
Civil Twilight 6:28 AM EST 5:21 PM EST
Nautical Twilight 5:56 AM EST 5:54 PM EST
Astronomical Twilight 5:24 AM EST 6:25 PM EST
Moon 12:00 PM EST (11/19) 11:16 PM EST (11/19)
Length of Visible Light 10h 52m
Length of Day
9h 55m
Waxing Crescent, 40% of the Moon is Illuminated
Nov 19
Waxing Crescent
Nov 20
First Quarter
Nov 28
Full
Dec 6
Last Quarter
Dec 13
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 45.0 °F 43.5 °F 37.0 °F 74% 30.49 in 10.0 mi NNE 3.5 mph - N/A   Mostly Cloudy
1:52 AM 45.0 °F 40.6 °F 37.0 °F 74% 30.48 in 10.0 mi North 8.1 mph - N/A   Overcast
2:52 AM 45.0 °F 40.6 °F 37.0 °F 74% 30.48 in 10.0 mi North 8.1 mph - N/A   Overcast
3:52 AM 44.1 °F 40.1 °F 36.0 °F 73% 30.47 in 10.0 mi North 6.9 mph - N/A   Overcast
4:52 AM 44.1 °F 39.0 °F 36.0 °F 73% 30.46 in 10.0 mi North 9.2 mph - N/A   Overcast
5:52 AM 43.0 °F 37.7 °F 36.0 °F 76% 30.46 in 10.0 mi North 9.2 mph - N/A   Overcast
6:52 AM 43.0 °F 37.2 °F 36.0 °F 76% 30.46 in 10.0 mi North 10.4 mph - N/A   Mostly Cloudy
7:52 AM 43.0 °F 38.8 °F 36.0 °F 76% 30.45 in 9.0 mi North 6.9 mph - N/A   Overcast
8:52 AM 45.0 °F 40.6 °F 37.0 °F 74% 30.46 in 10.0 mi North 8.1 mph - N/A   Overcast
9:52 AM 46.9 °F - 37.0 °F 68% 30.44 in 10.0 mi NNE 6.9 mph - N/A   Overcast
10:52 AM 48.0 °F - 37.9 °F 68% 30.43 in 10.0 mi NNW 8.1 mph - N/A   Overcast
11:52 AM 50.0 °F - 37.9 °F 63% 30.40 in 10.0 mi North 9.2 mph - N/A   Overcast
12:52 PM 52.0 °F - 37.9 °F 59% 30.35 in 10.0 mi North 10.4 mph - N/A   Overcast
1:52 PM 52.0 °F - 37.9 °F 59% 30.33 in 10.0 mi North 9.2 mph - N/A   Overcast
2:52 PM 52.0 °F - 37.9 °F 59% 30.33 in 10.0 mi North 9.2 mph - N/A   Overcast
3:52 PM 51.1 °F - 37.0 °F 59% 30.32 in 10.0 mi NNW 6.9 mph - N/A   Mostly Cloudy
4:52 PM 48.9 °F - 37.0 °F 64% 30.31 in 10.0 mi NNE 8.1 mph - N/A   Scattered Clouds
5:52 PM 48.0 °F - 36.0 °F 63% 30.31 in 10.0 mi North 9.2 mph - N/A   Mostly Cloudy
6:52 PM 46.0 °F 43.1 °F 37.0 °F 71% 30.31 in 10.0 mi NNW 5.8 mph - N/A   Scattered Clouds
7:52 PM 45.0 °F 41.8 °F 37.0 °F 74% 30.29 in 10.0 mi NNE 5.8 mph - N/A   Scattered Clouds
8:52 PM 42.1 °F - 36.0 °F 79% 30.28 in 10.0 mi Calm Calm - N/A   Mostly Cloudy
9:52 PM 37.9 °F 35.5 °F 34.0 °F 86% 30.27 in 10.0 mi WNW 3.5 mph - N/A   Scattered Clouds
10:52 PM 39.0 °F 36.8 °F 35.1 °F 86% 30.26 in 10.0 mi NW 3.5 mph - N/A   Scattered Clouds
11:52 PM 37.0 °F - 34.0 °F 89% 30.25 in 10.0 mi Calm Calm - N/A   Mostly Cloudy