Weather History for Washington, DC

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Friday, January 14, 2011

  Actual Average Record
Temperature  
Mean Temperature 30 °F 36 °F  
Max Temperature 37 °F 43 °F 76 °F (1932)
Min Temperature 23 °F 28 °F -13 °F (1912)
Degree Days  
Heating Degree Days 35 29  
Month to date heating degree days 428 406  
Since 1 July heating degree days 1933 1887  
Cooling Degree Days 0 0  
Month to date cooling degree days 0 0  
Year to date cooling degree days 0 0  
Moisture  
Dew Point 15 °F    
Average Humidity 53    
Maximum Humidity 69    
Minimum Humidity 37    
Precipitation  
Precipitation 0.00 in 0.10 in 1.82 in (2005)
Month to date precipitation 0.20 1.26  
Year to date precipitation 0.20 1.26  
Snow  
Snow 0.00 in 0.20 in 1.60 in (1957)
Month to date snowfall 1.4 2.0  
Since 1 July snowfall 3.5 4.8  
Snow Depth 0.00 in    
Sea Level Pressure  
Sea Level Pressure 30.40 in    
Wind  
Wind Speed 5 mph (NW)    
Max Wind Speed 17 mph    
Max Gust Speed 24 mph    
Visibility 10 miles    
Events      
T = Trace of Precipitation, MM = Missing Value Source: NWS Daily Summary

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Astronomy

Jan. 14, 2011 Rise Set
Actual Time 7:25 AM EST 5:09 PM EST
Civil Twilight 6:56 AM EST 5:38 PM EST
Nautical Twilight 6:23 AM EST 6:11 PM EST
Astronomical Twilight 5:51 AM EST 6:43 PM EST
Moon 12:25 PM EST (1/14) 2:23 AM EST (1/14)
Length of Visible Light 10h 42m
Length of Day
9h 43m
Waxing Gibbous, 71% of the Moon is Illuminated
Jan 14
Waxing Gibbous
Jan 19
Full
Jan 26
Last Quarter
Feb 2
New
Feb 11
First 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 25.0 °F 17.1 °F 10.9 °F 55% 30.41 in 10.0 mi NW 6.9 mph - N/A   Mostly Cloudy
1:52 AM 25.0 °F 18.1 °F 10.0 °F 53% 30.41 in 10.0 mi NNW 5.8 mph - N/A   Mostly Cloudy
2:52 AM 25.0 °F 19.3 °F 10.0 °F 53% 30.43 in 10.0 mi West 4.6 mph - N/A   Mostly Cloudy
3:52 AM 25.0 °F 18.1 °F 10.0 °F 53% 30.42 in 10.0 mi NNW 5.8 mph - N/A   Mostly Cloudy
4:52 AM 25.0 °F 20.7 °F 10.9 °F 55% 30.42 in 10.0 mi NNW 3.5 mph - N/A   Scattered Clouds
5:52 AM 25.0 °F - 10.9 °F 55% 30.41 in 10.0 mi Calm Calm - N/A   Scattered Clouds
6:52 AM 25.0 °F 15.5 °F 15.1 °F 66% 30.41 in 10.0 mi NNW 9.2 mph - N/A   Mostly Cloudy
7:21 AM 24.8 °F 16.9 °F 17.6 °F 74% 30.42 in 10.0 mi NNW 6.9 mph - N/A   Mostly Cloudy
7:52 AM 26.1 °F 21.9 °F 18.0 °F 71% 30.42 in 10.0 mi Variable 3.5 mph - N/A   Mostly Cloudy
8:52 AM 28.9 °F 22.8 °F 19.9 °F 69% 30.44 in 10.0 mi NW 5.8 mph - N/A   Mostly Cloudy
9:52 AM 32.0 °F 24.8 °F 18.0 °F 56% 30.45 in 10.0 mi West 8.1 mph - N/A   Partly Cloudy
10:52 AM 33.1 °F 23.4 °F 15.1 °F 48% 30.44 in 10.0 mi NW 13.8 mph 20.7 mph N/A   Scattered Clouds
11:15 AM 32.0 °F 23.0 °F 15.8 °F 51% 30.43 in 10.0 mi NW 11.5 mph - N/A   Mostly Cloudy
11:52 AM 33.1 °F 24.9 °F 14.0 °F 46% 30.41 in 10.0 mi NW 10.4 mph 17.3 mph N/A   Mostly Cloudy
12:52 PM 35.1 °F 25.2 °F 12.9 °F 40% 30.38 in 10.0 mi West 16.1 mph 24.2 mph N/A   Scattered Clouds
1:52 PM 36.0 °F 28.0 °F 14.0 °F 41% 30.38 in 10.0 mi NW 11.5 mph 20.7 mph N/A   Scattered Clouds
2:52 PM 37.0 °F 31.6 °F 14.0 °F 39% 30.38 in 10.0 mi NNW 6.9 mph - N/A   Scattered Clouds
3:52 PM 36.0 °F 32.1 °F 14.0 °F 41% 30.38 in 10.0 mi NW 4.6 mph - N/A   Scattered Clouds
4:52 PM 35.1 °F 29.3 °F 14.0 °F 42% 30.37 in 10.0 mi WNW 6.9 mph - N/A   Scattered Clouds
5:52 PM 33.1 °F - 15.1 °F 48% 30.37 in 10.0 mi Calm Calm - N/A   Scattered Clouds
6:52 PM 30.9 °F 27.5 °F 18.0 °F 59% 30.37 in 10.0 mi SSE 3.5 mph - N/A   Mostly Cloudy
7:52 PM 32.0 °F - 19.9 °F 61% 30.37 in 10.0 mi Calm Calm - N/A   Mostly Cloudy
8:52 PM 30.9 °F - 21.9 °F 69% 30.37 in 10.0 mi Calm Calm - N/A   Mostly Cloudy
9:52 PM 30.9 °F - 21.9 °F 69% 30.38 in 10.0 mi Calm Calm - N/A   Overcast
10:52 PM 32.0 °F - 18.0 °F 56% 30.35 in 10.0 mi Calm Calm - N/A   Overcast
11:52 PM 32.0 °F - 18.0 °F 56% 30.34 in 10.0 mi Calm Calm - N/A   Mostly Cloudy