Weather History for Dulles Airport, VA

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Monday, November 12, 2012

  Actual Average Record
Temperature  
Mean Temperature 59 °F 48 °F  
Max Temperature 70 °F 59 °F 74 °F (1964)
Min Temperature 47 °F 36 °F 22 °F (1973)
Degree Days  
Heating Degree Days 6 17  
Month to date heating degree days 236 187  
Since 1 July heating degree days 549 543  
Cooling Degree Days 0 0  
Month to date cooling degree days 0 0  
Year to date cooling degree days 1436 1176  
Growing Degree Days 8 (Base 50)    
Moisture  
Dew Point 51 °F    
Average Humidity 73    
Maximum Humidity 89    
Minimum Humidity 57    
Precipitation  
Precipitation 0.19 in 0.10 in 1.92 in (2004)
Month to date precipitation 0.19 1.35  
Year to date precipitation 31.82 36.52  
Snow  
Snow 0.00 in 0.00 in 4.20 in (1968)
Month to date snowfall 0.0 0.1  
Since 1 July snowfall 0.0 0.1  
Snow Depth 0.00 in    
Sea Level Pressure  
Sea Level Pressure 30.28 in    
Wind  
Wind Speed 8 mph (South)    
Max Wind Speed 28 mph    
Max Gust Speed 33 mph    
Visibility 10 miles    
Events 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

Nov. 12, 2012 Rise Set
Actual Time 6:49 AM EST 4:57 PM EST
Civil Twilight 6:21 AM EST 5:26 PM EST
Nautical Twilight 5:49 AM EST 5:58 PM EST
Astronomical Twilight 5:17 AM EST 6:29 PM EST
Moon 5:13 AM EST (11/12) 4:01 PM EST (11/12)
Length of Visible Light 11h 04m
Length of Day
10h 08m
Waning Crescent, 2% of the Moon is Illuminated
Nov 12
Waning Crescent
Nov 13
New
Nov 20
First Quarter
Nov 28
Full
Dec 6
Last Quarter

Hourly Weather History & Observations

Time (EST) Temp. Dew Point Humidity Pressure Visibility Wind Dir Wind Speed Gust Speed Precip Events Conditions
12:52 AM 54.0 °F 43.0 °F 66% 30.41 in 10.0 mi South 3.5 mph - N/A   Clear
1:52 AM 51.1 °F 42.1 °F 71% 30.40 in 10.0 mi SSE 5.8 mph - N/A   Clear
2:52 AM 52.0 °F 43.0 °F 71% 30.39 in 10.0 mi SSE 8.1 mph - N/A   Clear
3:52 AM 50.0 °F 43.0 °F 77% 30.39 in 10.0 mi South 3.5 mph - N/A   Partly Cloudy
4:52 AM 48.9 °F 43.0 °F 80% 30.39 in 10.0 mi SSE 4.6 mph - N/A   Clear
5:52 AM 52.0 °F 46.0 °F 80% 30.38 in 10.0 mi SSE 5.8 mph - N/A   Clear
6:52 AM 51.8 °F 46.4 °F 82% 30.38 in 10.0 mi SSE 5.8 mph - N/A   Scattered Clouds
7:52 AM 54.0 °F 50.0 °F 86% 30.39 in 10.0 mi South 6.9 mph - N/A   Mostly Cloudy
8:52 AM 57.9 °F 52.0 °F 81% 30.38 in 10.0 mi South 9.2 mph - N/A   Mostly Cloudy
9:52 AM 60.1 °F 52.0 °F 75% 30.37 in 10.0 mi South 5.8 mph - N/A   Mostly Cloudy
10:52 AM 64.0 °F 53.1 °F 67% 30.35 in 10.0 mi South 11.5 mph - N/A   Mostly Cloudy
11:52 AM 66.0 °F 54.0 °F 65% 30.33 in 10.0 mi SSW 10.4 mph - N/A   Mostly Cloudy
12:52 PM 68.0 °F 55.0 °F 63% 30.29 in 10.0 mi South 11.5 mph 17.3 mph N/A   Mostly Cloudy
1:52 PM 69.1 °F 55.0 °F 61% 30.26 in 10.0 mi South 6.9 mph - N/A   Mostly Cloudy
2:52 PM 69.1 °F 55.0 °F 61% 30.22 in 10.0 mi SSW 8.1 mph - N/A   Mostly Cloudy
3:52 PM 70.0 °F 54.0 °F 57% 30.20 in 10.0 mi SSE 6.9 mph - N/A   Mostly Cloudy
4:52 PM 68.0 °F 54.0 °F 61% 30.19 in 10.0 mi SSE 8.1 mph - N/A   Mostly Cloudy
5:52 PM 68.0 °F 54.0 °F 61% 30.19 in 10.0 mi SSE 6.9 mph - N/A   Overcast
6:52 PM 66.9 °F 54.0 °F 63% 30.17 in 10.0 mi SE 10.4 mph - N/A   Overcast
7:52 PM 64.9 °F 55.0 °F 70% 30.18 in 10.0 mi SW 5.8 mph - 0.00 in Rain Light Rain
8:52 PM 62.1 °F 55.0 °F 78% 30.16 in 10.0 mi SSE 4.6 mph - 0.00 in   Mostly Cloudy
9:52 PM 63.0 °F 55.9 °F 78% 30.14 in 10.0 mi SSE 8.1 mph - N/A   Overcast
10:52 PM 63.0 °F 57.0 °F 81% 30.14 in 10.0 mi South 9.2 mph - 0.00 in   Overcast
11:28 PM 59.0 °F 53.6 °F 82% 30.17 in 10.0 mi NW 21.9 mph 29.9 mph N/A   Overcast
11:52 PM 53.1 °F 50.0 °F 89% 30.19 in 3.0 mi NW 13.8 mph 25.3 mph 0.08 in Rain Heavy Rain
11:59 PM 51.8 °F 51.8 °F 100% 30.20 in 1.5 mi NW 12.7 mph - 0.11 in Rain Heavy Rain