Weather History for Washington, DC

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Monday, January 21, 2013

  Actual Average Record
Temperature  
Mean Temperature 40 °F 36 °F  
Max Temperature 47 °F 43 °F 70 °F (1959)
Min Temperature 32 °F 28 °F -4 °F (1985)
Degree Days  
Heating Degree Days 25 29  
Month to date heating degree days 473 609  
Since 1 July heating degree days 1787 2090  
Cooling Degree Days 0 0  
Month to date cooling degree days 0 0  
Year to date cooling degree days 0 0  
Moisture  
Dew Point 18 °F    
Average Humidity 43    
Maximum Humidity 51    
Minimum Humidity 34    
Precipitation  
Precipitation 0.00 in 0.10 in 1.41 in (1902)
Month to date precipitation 1.21 1.90  
Year to date precipitation 1.21 1.90  
Snow  
Snow 0.00 in 0.20 in 3.50 in (1982)
Month to date snowfall T 3.4  
Since 1 July snowfall 0.2 6.2  
Snow Depth 0.00 in    
Sea Level Pressure  
Sea Level Pressure 29.99 in    
Wind  
Wind Speed 10 mph (ENE)    
Max Wind Speed 26 mph    
Max Gust Speed 37 mph    
Visibility 10 miles    
Events      
T = Trace of Precipitation, MM = Missing Value Source: NWS Daily Summary

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Astronomy

Jan. 21, 2013 Rise Set
Actual Time 7:22 AM EST 5:17 PM EST
Civil Twilight 6:53 AM EST 5:46 PM EST
Nautical Twilight 6:20 AM EST 6:18 PM EST
Astronomical Twilight 5:49 AM EST 6:50 PM EST
Moon 12:56 PM EST (1/21) 2:48 AM EST (1/21)
Length of Visible Light 10h 52m
Length of Day
9h 55m
Waxing Gibbous, 75% of the Moon is Illuminated
Jan 21
Waxing Gibbous
Jan 26
Full
Feb 3
Last Quarter
Feb 10
New
Feb 17
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 37.9 °F 30.0 °F 14.0 °F 38% 30.09 in 10.0 mi North 12.7 mph - N/A   Mostly Cloudy
1:52 AM 37.0 °F 29.8 °F 12.9 °F 37% 30.11 in 10.0 mi North 10.4 mph - N/A   Scattered Clouds
2:52 AM 36.0 °F 28.0 °F 14.0 °F 41% 30.11 in 10.0 mi North 11.5 mph - N/A   Mostly Cloudy
3:52 AM 35.1 °F 28.6 °F 16.0 °F 46% 30.11 in 10.0 mi ENE 8.1 mph - N/A   Overcast
4:52 AM 35.1 °F 27.9 °F 15.1 °F 44% 30.11 in 10.0 mi ENE 9.2 mph - N/A   Overcast
5:52 AM 33.1 °F 26.9 °F 15.1 °F 48% 30.11 in 10.0 mi ENE 6.9 mph - N/A   Overcast
6:52 AM 33.1 °F 27.7 °F 16.0 °F 50% 30.12 in 10.0 mi East 5.8 mph - N/A   Mostly Cloudy
7:52 AM 34.0 °F 28.8 °F 17.1 °F 50% 30.11 in 10.0 mi ESE 5.8 mph - N/A   Mostly Cloudy
8:52 AM 35.1 °F 29.3 °F 18.0 °F 50% 30.11 in 10.0 mi ESE 6.9 mph - N/A   Mostly Cloudy
9:52 AM 37.9 °F 32.7 °F 19.0 °F 47% 30.10 in 10.0 mi SSE 6.9 mph - N/A   Mostly Cloudy
10:52 AM 37.9 °F 33.5 °F 19.0 °F 47% 30.08 in 10.0 mi South 5.8 mph - N/A   Mostly Cloudy
11:52 AM 39.9 °F 33.4 °F 21.0 °F 47% 30.02 in 10.0 mi South 10.4 mph - N/A   Mostly Cloudy
12:52 PM 42.1 °F 37.7 °F 19.9 °F 41% 29.96 in 10.0 mi South 6.9 mph - N/A   Mostly Cloudy
1:52 PM 44.1 °F 38.6 °F 23.0 °F 43% 29.91 in 10.0 mi South 10.4 mph - N/A   Mostly Cloudy
2:52 PM 46.0 °F 41.4 °F 25.0 °F 44% 29.87 in 10.0 mi South 9.2 mph - N/A   Scattered Clouds
3:52 PM 46.0 °F 41.9 °F 27.0 °F 47% 29.83 in 10.0 mi South 8.1 mph - N/A   Partly Cloudy
4:52 PM 45.0 °F 41.8 °F 27.0 °F 49% 29.80 in 10.0 mi SSW 5.8 mph - N/A   Scattered Clouds
5:52 PM 46.9 °F - 25.0 °F 42% 29.82 in 10.0 mi NW 4.6 mph - N/A   Overcast
6:52 PM 41.0 °F 33.1 °F 21.9 °F 47% 29.87 in 10.0 mi North 15.0 mph - N/A   Mostly Cloudy
7:52 PM 39.0 °F 29.6 °F 14.0 °F 36% 29.89 in 10.0 mi North 18.4 mph 28.8 mph N/A   Clear
8:52 PM 35.1 °F 25.9 °F 15.1 °F 44% 29.92 in 10.0 mi North 13.8 mph 20.7 mph N/A   Partly Cloudy
9:52 PM 34.0 °F 27.2 °F 14.0 °F 44% 29.93 in 10.0 mi NNW 8.1 mph 19.6 mph N/A   Clear
10:52 PM 33.8 °F 23.2 °F 10.4 °F 38% 29.93 in 10.0 mi NW 17.3 mph 26.5 mph N/A   Clear
11:52 PM 32.0 °F 19.2 °F 9.0 °F 38% 29.94 in 10.0 mi NW 23.0 mph 34.5 mph N/A   Clear