Weather History for Washington, DC

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Saturday, January 28, 2012

  Actual Average Record
Temperature  
Mean Temperature 44 °F 36 °F  
Max Temperature 55 °F 44 °F 73 °F (1949)
Min Temperature 33 °F 29 °F -2 °F (1935)
Degree Days  
Heating Degree Days 21 29  
Month to date heating degree days 686 812  
Since 1 July heating degree days 1894 2293  
Cooling Degree Days 0 0  
Month to date cooling degree days 0 0  
Year to date cooling degree days 0 0  
Moisture  
Dew Point 26 °F    
Average Humidity 56    
Maximum Humidity 82    
Minimum Humidity 29    
Precipitation  
Precipitation 0.00 in 0.10 in 2.15 in (1922)
Month to date precipitation 2.19 2.53  
Year to date precipitation 2.19 2.53  
Snow  
Snow 0.00 in 0.30 in 21.00 in (1922)
Month to date snowfall 1.7 4.9  
Since 1 July snowfall 1.7 7.7  
Snow Depth 0.00 in    
Sea Level Pressure  
Sea Level Pressure 30.06 in    
Wind  
Wind Speed 8 mph (WSW)    
Max Wind Speed 25 mph    
Max Gust Speed 35 mph    
Visibility 10 miles    
Events      
T = Trace of Precipitation, MM = Missing Value Source: NWS Daily Summary

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Astronomy

Jan. 28, 2012 Rise Set
Actual Time 7:18 AM EST 5:24 PM EST
Civil Twilight 6:49 AM EST 5:52 PM EST
Nautical Twilight 6:17 AM EST 6:24 PM EST
Astronomical Twilight 5:46 AM EST 6:56 PM EST
Moon 9:43 AM EST (1/28) 11:06 PM EST (1/28)
Length of Visible Light 11h 03m
Length of Day
10h 06m
Waxing Crescent, 27% of the Moon is Illuminated
Jan 28
Waxing Crescent
Jan 30
First Quarter
Feb 7
Full
Feb 14
Last Quarter
Feb 21
New

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 39.9 °F - 26.1 °F 58% 30.02 in 10.0 mi Calm Calm - N/A   Clear
1:52 AM 39.0 °F 36.8 °F 26.1 °F 60% 30.02 in 10.0 mi NW 3.5 mph - N/A   Clear
2:52 AM 39.0 °F 34.0 °F 26.1 °F 60% 30.04 in 10.0 mi NNW 6.9 mph - N/A   Clear
3:52 AM 37.9 °F 35.5 °F 30.0 °F 73% 30.03 in 10.0 mi NE 3.5 mph - N/A   Clear
4:52 AM 37.9 °F - 28.0 °F 68% 30.06 in 10.0 mi Calm Calm - N/A   Clear
5:52 AM 36.0 °F - 28.0 °F 73% 30.08 in 10.0 mi Calm Calm - N/A   Clear
6:40 AM 35.6 °F 32.8 °F 30.2 °F 81% 30.08 in 10.0 mi WSW 3.5 mph - N/A   Scattered Clouds
6:52 AM 34.0 °F 31.0 °F 28.9 °F 82% 30.08 in 10.0 mi SW 3.5 mph - N/A   Scattered Clouds
7:52 AM 35.1 °F - 30.0 °F 82% 30.08 in 10.0 mi Calm Calm - N/A   Scattered Clouds
8:52 AM 39.0 °F 34.8 °F 30.9 °F 73% 30.07 in 10.0 mi SSW 5.8 mph - N/A   Mostly Cloudy
9:52 AM 42.1 °F 38.4 °F 28.0 °F 58% 30.11 in 10.0 mi SSW 5.8 mph - N/A   Scattered Clouds
10:52 AM 43.0 °F 36.8 °F 30.0 °F 60% 30.09 in 10.0 mi South 11.5 mph - N/A   Scattered Clouds
11:52 AM 46.9 °F - 32.0 °F 56% 30.05 in 10.0 mi South 10.4 mph - N/A   Scattered Clouds
12:52 PM 50.0 °F - 32.0 °F 50% 29.99 in 10.0 mi South 16.1 mph 21.9 mph N/A   Scattered Clouds
1:52 PM 51.1 °F - 32.0 °F 48% 29.96 in 10.0 mi SSW 13.8 mph 23.0 mph N/A   Partly Cloudy
2:52 PM 53.1 °F - 32.0 °F 45% 29.95 in 10.0 mi SSW 15.0 mph - N/A   Scattered Clouds
3:52 PM 53.1 °F - 32.0 °F 45% 29.94 in 10.0 mi SSW 16.1 mph 20.7 mph N/A   Scattered Clouds
4:52 PM 53.1 °F - 30.9 °F 43% 29.95 in 10.0 mi SSW 9.2 mph - N/A   Scattered Clouds
5:52 PM 54.0 °F - 30.9 °F 41% 29.99 in 10.0 mi West 8.1 mph - N/A   Overcast
6:07 PM 53.6 °F - 30.2 °F 41% 30.00 in 10.0 mi NW 23.0 mph 29.9 mph N/A   Overcast
6:52 PM 51.1 °F - 25.0 °F 36% 30.05 in 10.0 mi WNW 16.1 mph 27.6 mph N/A   Mostly Cloudy
7:41 PM 48.2 °F - 15.8 °F 27% 30.09 in 10.0 mi NW 25.3 mph 33.4 mph N/A   Partly Cloudy
7:52 PM 48.0 °F - 17.1 °F 29% 30.10 in 10.0 mi WNW 15.0 mph 33.4 mph N/A   Partly Cloudy
8:52 PM 46.0 °F 41.9 °F 19.0 °F 34% 30.13 in 10.0 mi WNW 8.1 mph - N/A   Partly Cloudy
9:52 PM 44.1 °F 39.5 °F 15.1 °F 31% 30.16 in 10.0 mi WNW 8.1 mph - N/A   Clear
10:52 PM 43.0 °F 37.7 °F 16.0 °F 34% 30.18 in 10.0 mi WNW 9.2 mph - N/A   Clear
11:52 PM 42.1 °F 34.5 °F 12.9 °F 31% 30.21 in 10.0 mi NW 15.0 mph 20.7 mph N/A   Clear