Dulles, VA

9:11 PM EST on February 06, 2016 (GMT -0500)
Washington Dulles International

Weather History for KIAD - February, 2012

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Saturday, February 18, 2012

  Actual Average Record
Temperature  
Mean Temperature 43 °F 37 °F  
Max Temperature 59 °F 47 °F 75 °F (2011)
Min Temperature 26 °F 26 °F -14 °F (1979)
Degree Days  
Heating Degree Days 22 28  
Month to date heating degree days 456 537  
Since 1 July heating degree days 2819 3321  
Cooling Degree Days 0 0  
Month to date cooling degree days 0 0  
Year to date cooling degree days 0 0  
Moisture  
Dew Point 27 °F    
Average Humidity 60    
Maximum Humidity 85    
Minimum Humidity 35    
Precipitation  
Precipitation 0.00 in 0.10 in 1.29 in (1964)
Month to date precipitation 0.69 1.78  
Year to date precipitation 2.54 4.46  
Snow  
Snow 0.00 in 0.30 in 2.50 in (1979)
Month to date snowfall 1.4 5.4  
Since 1 July snowfall 3.7 16.7  
Snow Depth 0.00 in    
Sea Level Pressure  
Sea Level Pressure 30.04 in    
Wind  
Wind Speed 8 mph (WSW)    
Max Wind Speed 23 mph    
Max Gust Speed 29 mph    
Visibility 10 miles    
Events      
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

Feb. 18, 2012 Rise Set
Actual Time 6:58 AM EST 5:50 PM EST
Civil Twilight 6:30 AM EST 6:17 PM EST
Nautical Twilight 5:59 AM EST 6:48 PM EST
Astronomical Twilight 5:28 AM EST 7:19 PM EST
Moon 4:34 AM EST (2/18) 2:46 PM EST (2/18)
Length of Visible Light 11h 46m
Length of Day
10h 52m
Waning Crescent, 11% of the Moon is Illuminated
Feb 18
Waning Crescent
Feb 21
New
Feb 29
First Quarter
Mar 8
Full
Mar 14
Last Quarter

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 33.1 °F - 26.1 °F 75% 30.11 in 10.0 mi Calm Calm - N/A   Scattered Clouds
1:52 AM 33.1 °F 30.0 °F 26.1 °F 75% 30.12 in 10.0 mi WNW 3.5 mph - N/A   Scattered Clouds
2:52 AM 30.9 °F - 26.1 °F 82% 30.10 in 10.0 mi Calm Calm - N/A   Partly Cloudy
3:52 AM 30.0 °F - 24.1 °F 79% 30.11 in 10.0 mi Calm Calm - N/A   Clear
4:52 AM 28.0 °F - 24.1 °F 85% 30.11 in 10.0 mi Calm Calm - N/A   Partly Cloudy
5:52 AM 28.0 °F - 25.0 °F 88% 30.12 in 10.0 mi Calm Calm - N/A   Partly Cloudy
6:52 AM 26.6 °F - 23.0 °F 86% 30.11 in 10.0 mi Calm Calm - N/A   Scattered Clouds
7:52 AM 30.9 °F 25.2 °F 26.1 °F 82% 30.13 in 10.0 mi South 5.8 mph - N/A   Mostly Cloudy
8:52 AM 39.9 °F - 28.9 °F 65% 30.12 in 10.0 mi Calm Calm - N/A   Mostly Cloudy
9:52 AM 46.0 °F 41.9 °F 28.0 °F 50% 30.11 in 10.0 mi SSE 8.1 mph - N/A   Partly Cloudy
10:52 AM 50.0 °F - 28.0 °F 43% 30.07 in 10.0 mi South 13.8 mph 17.3 mph N/A   Partly Cloudy
11:52 AM 52.0 °F - 28.0 °F 40% 30.03 in 10.0 mi South 11.5 mph 25.3 mph N/A   Scattered Clouds
12:52 PM 55.0 °F - 28.9 °F 37% 29.99 in 10.0 mi South 12.7 mph 20.7 mph N/A   Scattered Clouds
1:52 PM 55.9 °F - 28.0 °F 34% 29.93 in 10.0 mi SSW 15.0 mph 23.0 mph N/A   Scattered Clouds
2:52 PM 57.0 °F - 30.0 °F 36% 29.90 in 10.0 mi SSW 15.0 mph 21.9 mph N/A   Partly Cloudy
3:52 PM 57.9 °F - 30.9 °F 36% 29.89 in 10.0 mi SSW 12.7 mph 24.2 mph N/A   Scattered Clouds
4:52 PM 57.0 °F - 33.1 °F 40% 29.90 in 10.0 mi SSW 11.5 mph 25.3 mph N/A   Mostly Cloudy
5:52 PM 54.0 °F - 32.0 °F 43% 29.93 in 10.0 mi SW 5.8 mph - N/A   Overcast
6:52 PM 53.1 °F - 26.1 °F 35% 29.96 in 10.0 mi NW 8.1 mph - N/A   Mostly Cloudy
7:52 PM 51.1 °F - 27.0 °F 39% 29.97 in 10.0 mi NW 8.1 mph - N/A   Mostly Cloudy
8:52 PM 48.9 °F - 27.0 °F 43% 30.01 in 10.0 mi NNW 12.7 mph - N/A   Overcast
9:52 PM 46.0 °F 39.0 °F 23.0 °F 40% 30.06 in 10.0 mi North 17.3 mph - N/A   Overcast
10:52 PM 43.0 °F 36.0 °F 23.0 °F 45% 30.08 in 10.0 mi North 13.8 mph 19.6 mph N/A   Overcast
11:52 PM 42.1 °F 35.7 °F 21.0 °F 43% 30.10 in 10.0 mi NNW 11.5 mph - N/A   Overcast