Weather History for Dulles Airport, VA

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Monday, October 8, 2012

  Actual Average Record
Temperature  
Mean Temperature 44 °F 59 °F  
Max Temperature 51 °F 71 °F 92 °F (2007)
Min Temperature 37 °F 46 °F 30 °F (2001)
Degree Days  
Heating Degree Days 21 7  
Month to date heating degree days 48 50  
Since 1 July heating degree days 99 108  
Cooling Degree Days 0 1  
Month to date cooling degree days 14 10  
Year to date cooling degree days 1434 1167  
Moisture  
Dew Point 40 °F    
Average Humidity 82    
Maximum Humidity 100    
Minimum Humidity 63    
Precipitation  
Precipitation 0.05 in 0.10 in 2.79 in (2005)
Month to date precipitation 2.50 0.84  
Year to date precipitation 25.26 32.76  
Snow  
Snow 0.00 in 0.00 in - ()
Month to date snowfall 0.0 0.0  
Since 1 July snowfall 0.0 0.0  
Snow Depth 0.00 in    
Sea Level Pressure  
Sea Level Pressure 30.25 in    
Wind  
Wind Speed 6 mph (NNW)    
Max Wind Speed 12 mph    
Max Gust Speed 14 mph    
Visibility 10 miles    
Events Fog , Rain    
T = Trace of Precipitation, MM = Missing Value Source: NWS Daily Summary

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Daily Weather History Graph

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Date:

Astronomy

Oct. 08, 2012 Rise Set
Actual Time 7:12 AM EDT 6:40 PM EDT
Civil Twilight 6:46 AM EDT 7:07 PM EDT
Nautical Twilight 6:15 AM EDT 7:38 PM EDT
Astronomical Twilight 5:44 AM EDT 8:09 PM EDT
Moon No Moon Rise 2:25 PM EDT (10/8)
Length of Visible Light 12h 21m
Length of Day
11h 28m
Waning Gibbous, 46% of the Moon is Illuminated
Oct 8
Waning Gibbous
Oct 15
New
Oct 21
First Quarter
Oct 29
Full
Nov 6
Last Quarter

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 43.0 °F 40.3 °F 42.1 °F 97% 30.19 in 5.0 mi WNW 4.6 mph - N/A Fog Patches of Fog
1:52 AM 43.0 °F - 41.0 °F 93% 30.20 in 6.0 mi Calm Calm - N/A Fog Patches of Fog
2:52 AM 41.0 °F 39.0 °F 39.0 °F 93% 30.20 in 10.0 mi NNW 3.5 mph - N/A   Clear
3:52 AM 39.9 °F - 37.0 °F 89% 30.21 in 10.0 mi Calm Calm - N/A   Clear
4:52 AM 41.0 °F 38.0 °F 37.9 °F 89% 30.22 in 10.0 mi NNW 4.6 mph - N/A   Clear
5:52 AM 42.1 °F 40.2 °F 39.0 °F 89% 30.23 in 10.0 mi NNW 3.5 mph - N/A   Scattered Clouds
6:52 AM 43.0 °F 40.3 °F 39.0 °F 86% 30.25 in 10.0 mi NNW 4.6 mph - N/A   Mostly Cloudy
7:52 AM 44.1 °F 40.1 °F 39.0 °F 82% 30.27 in 10.0 mi NNW 6.9 mph - N/A   Mostly Cloudy
8:52 AM 45.0 °F 41.2 °F 39.9 °F 82% 30.28 in 10.0 mi North 6.9 mph - N/A   Mostly Cloudy
9:52 AM 46.9 °F - 39.9 °F 77% 30.30 in 10.0 mi NNW 4.6 mph - N/A   Mostly Cloudy
10:52 AM 48.0 °F - 39.0 °F 71% 30.29 in 10.0 mi NNE 5.8 mph - N/A   Overcast
11:52 AM 50.0 °F - 39.2 °F 66% 30.31 in 10.0 mi Calm Calm - N/A   Overcast
12:52 PM 50.0 °F - 39.0 °F 66% 30.30 in 10.0 mi NE 6.9 mph - N/A   Overcast
1:52 PM 51.1 °F - 39.0 °F 63% 30.28 in 10.0 mi Calm Calm - N/A   Overcast
2:52 PM 50.0 °F - 39.0 °F 66% 30.29 in 10.0 mi NNW 9.2 mph - N/A   Overcast
3:52 PM 50.0 °F - 39.9 °F 68% 30.27 in 10.0 mi North 8.1 mph - 0.01 in   Overcast
4:52 PM 50.0 °F - 41.0 °F 71% 30.25 in 10.0 mi North 8.1 mph - N/A   Overcast
5:52 PM 48.9 °F - 39.9 °F 71% 30.24 in 10.0 mi North 9.2 mph - N/A   Overcast
6:52 PM 48.0 °F - 42.1 °F 80% 30.25 in 9.0 mi NNW 8.1 mph - 0.01 in Rain Light Rain
7:52 PM 48.2 °F - 42.8 °F 82% 30.23 in 10.0 mi North 6.9 mph - N/A   Overcast
8:52 PM 46.9 °F - 42.1 °F 83% 30.23 in 10.0 mi North 8.1 mph - N/A   Overcast
9:52 PM 46.9 °F - 39.9 °F 77% 30.24 in 10.0 mi North 6.9 mph - N/A   Overcast
10:52 PM 46.9 °F - 39.9 °F 77% 30.23 in 10.0 mi North 8.1 mph - N/A   Overcast
11:52 PM 46.0 °F 42.5 °F 41.0 °F 83% 30.23 in 10.0 mi NNW 6.9 mph - 0.00 in   Overcast