Weather History for Washington, DC

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Sunday, February 12, 2012

  Actual Average Record
Temperature  
Mean Temperature 28 °F 38 °F  
Max Temperature 33 °F 46 °F 74 °F (1999)
Min Temperature 23 °F 30 °F 4 °F (1899)
Degree Days  
Heating Degree Days 37 27  
Month to date heating degree days 274 330  
Since 1 July heating degree days 2228 2710  
Cooling Degree Days 0 0  
Month to date cooling degree days 0 0  
Year to date cooling degree days 0 0  
Moisture  
Dew Point 10 °F    
Average Humidity 58    
Maximum Humidity 81    
Minimum Humidity 35    
Precipitation  
Precipitation 0.01 in 0.09 in 1.37 in (1985)
Month to date precipitation 0.41 1.13  
Year to date precipitation 2.60 3.94  
Snow  
Snow 0.10 in 0.20 in 7.00 in (1899)
Month to date snowfall 0.3 2.7  
Since 1 July snowfall 2.0 11.1  
Snow Depth T in    
Sea Level Pressure  
Sea Level Pressure 30.06 in    
Wind  
Wind Speed 17 mph (NW)    
Max Wind Speed 35 mph    
Max Gust Speed 49 mph    
Visibility 9 miles    
Events Snow    
T = Trace of Precipitation, MM = Missing Value Source: NWS Daily Summary

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Astronomy

Feb. 12, 2012 Rise Set
Actual Time 7:03 AM EST 5:41 PM EST
Civil Twilight 6:36 AM EST 6:09 PM EST
Nautical Twilight 6:04 AM EST 6:40 PM EST
Astronomical Twilight 5:33 AM EST 7:11 PM EST
Moon 11:33 PM EST (2/12) 9:24 AM EST (2/12)
Length of Visible Light 11h 33m
Length of Day
10h 38m
Waning Gibbous, 72% of the Moon is Illuminated
Feb 12
Waning Gibbous
Feb 14
Last Quarter
Feb 21
New
Feb 29
First Quarter
Mar 8
Full

Hourly Weather History & Observations

Time (EST) Temp. Windchill Dew Point Humidity Pressure Visibility Wind Dir Wind Speed Gust Speed Precip Events Conditions
12:02 AM 23.0 °F 8.7 °F 17.6 °F 80% 29.91 in 1.8 mi NNW 18.4 mph 31.1 mph 0.00 in Snow Light Snow
12:15 AM 23.0 °F 8.3 °F 17.6 °F 80% 29.91 in 1.8 mi NNW 19.6 mph 31.1 mph 0.00 in Snow Light Snow
12:50 AM 23.0 °F 6.9 °F 15.8 °F 74% 29.93 in 2.0 mi NNW 24.2 mph 35.7 mph 0.01 in Snow Light Snow
12:52 AM 23.0 °F 7.6 °F 16.0 °F 74% 29.93 in 3.0 mi NW 21.9 mph 35.7 mph 0.01 in Snow Light Snow
1:17 AM 24.8 °F 9.3 °F 12.2 °F 59% 29.94 in 9.0 mi NW 24.2 mph 36.8 mph 0.00 in   Overcast
1:52 AM 24.1 °F 7.1 °F 7.0 °F 48% 29.96 in 10.0 mi NNW 28.8 mph 43.7 mph 0.00 in   Overcast
2:52 AM 24.1 °F 6.9 °F 7.0 °F 48% 29.99 in 10.0 mi NNW 29.9 mph 39.1 mph N/A   Overcast
3:52 AM 24.1 °F 9.8 °F 9.0 °F 53% 30.02 in 10.0 mi NNW 19.6 mph 33.4 mph N/A   Scattered Clouds
4:52 AM 24.1 °F 11.0 °F 9.0 °F 53% 30.05 in 10.0 mi NNW 16.1 mph 29.9 mph N/A   Partly Cloudy
5:52 AM 23.0 °F 13.9 °F 9.0 °F 55% 30.06 in 10.0 mi NW 8.1 mph - N/A   Partly Cloudy
6:52 AM 23.0 °F 12.4 °F 8.1 °F 53% 30.07 in 10.0 mi WNW 10.4 mph 21.9 mph N/A   Scattered Clouds
7:52 AM 24.1 °F 12.5 °F 8.1 °F 51% 30.09 in 10.0 mi WNW 12.7 mph 26.5 mph N/A   Mostly Cloudy
8:52 AM 26.1 °F 14.0 °F 7.0 °F 44% 30.10 in 10.0 mi NW 15.0 mph 24.2 mph N/A   Mostly Cloudy
9:52 AM 27.0 °F 16.1 °F 7.0 °F 43% 30.10 in 10.0 mi NW 12.7 mph 32.2 mph N/A   Mostly Cloudy
10:52 AM 28.0 °F 13.0 °F 7.0 °F 41% 30.11 in 10.0 mi WNW 26.5 mph 36.8 mph N/A   Scattered Clouds
11:52 AM 30.0 °F 16.6 °F 8.1 °F 40% 30.11 in 10.0 mi WNW 23.0 mph 32.2 mph N/A   Mostly Cloudy
12:34 PM 30.2 °F 18.1 °F 8.6 °F 40% 30.10 in 10.0 mi NW 18.4 mph 28.8 mph N/A   Mostly Cloudy
12:52 PM 30.9 °F 18.1 °F 8.1 °F 38% 30.10 in 10.0 mi NW 21.9 mph 28.8 mph N/A   Mostly Cloudy
1:52 PM 30.9 °F 17.8 °F 8.1 °F 38% 30.09 in 10.0 mi NW 23.0 mph 36.8 mph N/A   Mostly Cloudy
2:52 PM 33.1 °F 21.5 °F 8.1 °F 35% 30.08 in 10.0 mi NW 19.6 mph 25.3 mph N/A   Mostly Cloudy
3:52 PM 32.0 °F 20.8 °F 8.1 °F 37% 30.08 in 10.0 mi WNW 17.3 mph - N/A   Mostly Cloudy
4:52 PM 30.9 °F 18.7 °F 9.0 °F 40% 30.08 in 10.0 mi WNW 19.6 mph 33.4 mph N/A   Mostly Cloudy
5:52 PM 30.0 °F 20.5 °F 9.0 °F 41% 30.09 in 10.0 mi WNW 11.5 mph - N/A   Scattered Clouds
6:52 PM 28.9 °F 18.2 °F 9.0 °F 43% 30.13 in 10.0 mi WNW 13.8 mph 21.9 mph N/A   Scattered Clouds
7:52 PM 28.0 °F 17.5 °F 8.1 °F 43% 30.14 in 10.0 mi WNW 12.7 mph 20.7 mph N/A   Partly Cloudy
8:52 PM 28.0 °F 20.8 °F 9.0 °F 45% 30.15 in 10.0 mi WNW 6.9 mph 19.6 mph N/A   Partly Cloudy
9:52 PM 28.0 °F 19.3 °F 9.0 °F 45% 30.17 in 10.0 mi NW 9.2 mph - N/A   Partly Cloudy
10:52 PM 28.0 °F 19.3 °F 10.0 °F 47% 30.16 in 10.0 mi NW 9.2 mph - N/A   Clear
11:52 PM 27.0 °F 18.0 °F 10.9 °F 51% 30.16 in 10.0 mi NW 9.2 mph - N/A   Clear