Weather History for Washington, DC

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Saturday, December 13, 2014

  Actual Average Record
Temperature  
Mean Temperature 40 °F 40 °F  
Max Temperature 49 °F 47 °F 71 °F (1889)
Min Temperature 31 °F 33 °F 11 °F (1960)
Degree Days  
Heating Degree Days 25 25  
Month to date heating degree days 272 299  
Since 1 July heating degree days 879 994  
Cooling Degree Days 0 0  
Month to date cooling degree days 0 0  
Year to date cooling degree days 1712 1549  
Moisture  
Dew Point 26 °F    
Average Humidity 58    
Maximum Humidity 70    
Minimum Humidity 46    
Precipitation  
Precipitation 0.00 in 0.09 in 2.43 in (1909)
Month to date precipitation 1.68 1.39  
Year to date precipitation 42.59 38.08  
Snow  
Snow 0.00 in 0.10 in 6.70 in (1966)
Month to date snowfall T 0.8  
Since 1 July snowfall T 1.3  
Snow Depth 0.00 in    
Sea Level Pressure  
Sea Level Pressure 30.08 in    
Wind  
Wind Speed 6 mph (NW)    
Max Wind Speed 18 mph    
Max Gust Speed 25 mph    
Visibility 10 miles    
Events      
T = Trace of Precipitation, MM = Missing Value Source: NWS Daily Summary

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Astronomy

Dec. 13, 2014 Rise Set
Actual Time 7:17 AM EST 4:46 PM EST
Civil Twilight 6:48 AM EST 5:16 PM EST
Nautical Twilight 6:14 AM EST 5:50 PM EST
Astronomical Twilight 5:42 AM EST 6:22 PM EST
Moon 11:43 PM EST (12/13) 11:43 AM EST (12/13)
Length of Visible Light 10h 28m
Length of Day
9h 28m
Waning Gibbous, 58% of the Moon is Illuminated
Dec 13
Waning Gibbous
Dec 14
Last Quarter
Dec 21
New
Dec 28
First Quarter
Jan 4
Full

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 36.0 °F 31.1 °F 23.0 °F 59% 30.12 in 10.0 mi North 5.8 mph - N/A   Mostly Cloudy
1:52 AM 35.1 °F 30.1 °F 23.0 °F 61% 30.12 in 10.0 mi SW 5.8 mph - N/A   Overcast
2:52 AM 35.1 °F 32.2 °F 24.1 °F 64% 30.12 in 10.0 mi SW 3.5 mph - N/A   Clear
3:52 AM 35.1 °F - 24.1 °F 64% 30.11 in 10.0 mi Calm Calm - N/A   Scattered Clouds
4:52 AM 34.0 °F 29.8 °F 23.0 °F 64% 30.10 in 10.0 mi SW 4.6 mph - N/A   Scattered Clouds
5:52 AM 33.1 °F 30.0 °F 24.1 °F 70% 30.10 in 9.0 mi South 3.5 mph - N/A   Clear
6:52 AM 33.1 °F 27.7 °F 23.0 °F 66% 30.12 in 10.0 mi SSW 5.8 mph - N/A   Mostly Cloudy
7:52 AM 33.1 °F - 25.0 °F 72% 30.13 in 7.0 mi Calm Calm - N/A   Mostly Cloudy
8:52 AM 36.0 °F - 27.0 °F 70% 30.14 in 7.0 mi Calm Calm - N/A   Mostly Cloudy
9:52 AM 39.0 °F - 27.0 °F 62% 30.15 in 7.0 mi Calm Calm - N/A   Mostly Cloudy
10:52 AM 44.1 °F 42.5 °F 27.0 °F 51% 30.13 in 7.0 mi Variable 3.5 mph - N/A   Mostly Cloudy
11:52 AM 46.9 °F - 28.9 °F 50% 30.10 in 9.0 mi NW 13.8 mph - N/A   Mostly Cloudy
12:52 PM 46.9 °F - 28.9 °F 50% 30.07 in 10.0 mi NW 15.0 mph - N/A   Mostly Cloudy
1:52 PM 48.9 °F - 30.0 °F 48% 30.05 in 10.0 mi NNW 10.4 mph - N/A   Mostly Cloudy
2:52 PM 48.2 °F - 28.4 °F 46% 30.03 in 10.0 mi NNW 9.2 mph - N/A   Mostly Cloudy
3:52 PM 48.2 °F - 30.2 °F 50% 30.03 in 10.0 mi North 9.2 mph - N/A   Overcast
4:52 PM 45.0 °F 41.8 °F 28.9 °F 53% 30.01 in 10.0 mi North 5.8 mph - N/A   Mostly Cloudy
5:52 PM 45.0 °F 40.6 °F 28.0 °F 52% 30.02 in 10.0 mi NNW 8.1 mph - N/A   Mostly Cloudy
6:52 PM 43.0 °F 38.8 °F 28.9 °F 58% 30.03 in 10.0 mi North 6.9 mph - N/A   Mostly Cloudy
7:52 PM 43.0 °F 38.2 °F 25.0 °F 49% 30.03 in 10.0 mi NW 8.1 mph - N/A   Mostly Cloudy
8:52 PM 41.0 °F 38.0 °F 26.1 °F 55% 30.03 in 10.0 mi NNW 4.6 mph - N/A   Mostly Cloudy
9:52 PM 39.9 °F 36.7 °F 26.1 °F 58% 30.04 in 10.0 mi NNW 4.6 mph - N/A   Mostly Cloudy
10:52 PM 39.9 °F 35.8 °F 27.0 °F 60% 30.04 in 10.0 mi NNW 5.8 mph - N/A   Mostly Cloudy
11:52 PM 39.9 °F 36.7 °F 27.0 °F 60% 30.03 in 10.0 mi North 4.6 mph - N/A   Scattered Clouds