Weather History for Washington, DC

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Saturday, December 8, 2012

  Actual Average Record
Temperature  
Mean Temperature 51 °F 42 °F  
Max Temperature 54 °F 49 °F 74 °F (1978)
Min Temperature 48 °F 34 °F 8 °F (1882)
Degree Days  
Heating Degree Days 14 23  
Month to date heating degree days 123 177  
Since 1 July heating degree days 834 872  
Cooling Degree Days 0 0  
Month to date cooling degree days 0 0  
Year to date cooling degree days 1975 1549  
Growing Degree Days 1 (Base 50)    
Moisture  
Dew Point 48 °F    
Average Humidity 92    
Maximum Humidity 100    
Minimum Humidity 83    
Precipitation  
Precipitation 0.00 in 0.10 in 1.35 in (1972)
Month to date precipitation 0.07 0.86  
Year to date precipitation 29.49 37.55  
Snow  
Snow 0.00 in 0.10 in 3.60 in (1989)
Month to date snowfall 0.0 0.5  
Since 1 July snowfall T 1.0  
Snow Depth 0.00 in    
Sea Level Pressure  
Sea Level Pressure 29.95 in    
Wind  
Wind Speed 5 mph (SSW)    
Max Wind Speed 14 mph    
Max Gust Speed 20 mph    
Visibility 5 miles    
Events Fog    
T = Trace of Precipitation, MM = Missing Value Source: NWS Daily Summary

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Date:

Astronomy

Dec. 08, 2012 Rise Set
Actual Time 7:14 AM EST 4:46 PM EST
Civil Twilight 6:44 AM EST 5:15 PM EST
Nautical Twilight 6:11 AM EST 5:49 PM EST
Astronomical Twilight 5:39 AM EST 6:21 PM EST
Moon 1:39 AM EST (12/8) 1:12 PM EST (12/8)
Length of Visible Light 10h 31m
Length of Day
9h 31m
Waning Crescent, 28% of the Moon is Illuminated
Dec 8
Waning Crescent
Dec 13
New
Dec 20
First Quarter
Dec 28
Full
Jan 4
Last Quarter

Hourly Weather History & Observations

Time (EST) Temp. Dew Point Humidity Pressure Visibility Wind Dir Wind Speed Gust Speed Precip Events Conditions
12:52 AM 48.0 °F 46.9 °F 96% 29.97 in 5.0 mi South 5.8 mph - N/A   Overcast
1:52 AM 48.9 °F 46.9 °F 93% 29.95 in 5.0 mi South 5.8 mph - N/A   Overcast
2:52 AM 48.9 °F 46.9 °F 93% 29.94 in 5.0 mi South 4.6 mph - N/A   Overcast
3:52 AM 48.9 °F 46.9 °F 93% 29.94 in 5.0 mi Calm Calm - N/A   Overcast
4:52 AM 48.0 °F 46.9 °F 96% 29.93 in 2.5 mi South 4.6 mph - N/A   Overcast
4:58 AM 48.2 °F 46.4 °F 93% 29.93 in 2.0 mi South 4.6 mph - N/A   Overcast
5:08 AM 48.2 °F 46.4 °F 93% 29.93 in 1.8 mi South 4.6 mph - N/A   Overcast
5:15 AM 48.2 °F 46.4 °F 93% 29.93 in 1.0 mi South 3.5 mph - N/A   Overcast
5:19 AM 48.2 °F 46.4 °F 93% 29.93 in 0.8 mi South 4.6 mph - N/A   Overcast
5:52 AM 48.9 °F 46.9 °F 93% 29.93 in 0.5 mi South 4.6 mph - N/A Fog Fog
6:48 AM 48.2 °F 48.2 °F 100% 29.94 in 1.2 mi SW 3.5 mph - N/A   Overcast
6:52 AM 48.9 °F 48.0 °F 97% 29.94 in 1.8 mi SW 3.5 mph - N/A   Overcast
7:06 AM 48.2 °F 48.2 °F 100% 29.94 in 2.0 mi SSW 3.5 mph - N/A   Overcast
7:52 AM 50.0 °F 48.0 °F 93% 29.95 in 2.5 mi WSW 4.6 mph - N/A   Overcast
8:19 AM 50.0 °F 48.2 °F 94% 29.95 in 3.0 mi WSW 3.5 mph - N/A   Overcast
8:52 AM 50.0 °F 48.0 °F 93% 29.95 in 3.0 mi Calm Calm - N/A   Overcast
9:52 AM 51.1 °F 48.0 °F 89% 29.97 in 3.0 mi West 5.8 mph - N/A   Overcast
10:52 AM 51.1 °F 48.9 °F 92% 29.97 in 3.0 mi SW 4.6 mph - N/A   Overcast
11:52 AM 51.1 °F 48.0 °F 89% 29.95 in 4.0 mi South 9.2 mph - N/A   Overcast
12:32 PM 51.8 °F 48.2 °F 88% 29.92 in 5.0 mi South 9.2 mph - N/A   Overcast
12:52 PM 51.1 °F 48.0 °F 89% 29.93 in 5.0 mi South 6.9 mph - N/A   Overcast
1:52 PM 52.0 °F 48.9 °F 89% 29.91 in 5.0 mi South 11.5 mph - N/A   Overcast
2:52 PM 53.1 °F 48.9 °F 86% 29.92 in 8.0 mi South 6.9 mph - N/A   Mostly Cloudy
3:28 PM 53.6 °F 48.2 °F 82% 29.92 in 8.0 mi South 6.9 mph - N/A   Scattered Clouds
3:52 PM 54.0 °F 48.9 °F 83% 29.93 in 10.0 mi South 6.9 mph - N/A   Scattered Clouds
4:52 PM 50.0 °F 46.9 °F 89% 29.93 in 7.0 mi South 5.8 mph - N/A   Scattered Clouds
5:52 PM 52.0 °F 48.9 °F 89% 29.95 in 9.0 mi South 4.6 mph - N/A   Scattered Clouds
6:52 PM 51.8 °F 48.2 °F 88% 29.96 in 8.0 mi Calm Calm - N/A   Scattered Clouds
7:52 PM 50.0 °F 48.9 °F 96% 29.97 in 8.0 mi Calm Calm - N/A   Mostly Cloudy
8:07 PM 48.2 °F 46.4 °F 93% 29.98 in 7.0 mi Calm Calm - N/A   Mostly Cloudy
8:14 PM 48.2 °F 46.4 °F 93% 29.98 in 6.0 mi Calm Calm - N/A Fog Mostly Cloudy
8:36 PM 48.2 °F 48.2 °F 100% 29.98 in 6.0 mi Calm Calm - N/A Fog Mostly Cloudy
8:52 PM 48.0 °F 46.9 °F 96% 29.99 in 5.0 mi Calm Calm - N/A Fog Mostly Cloudy
9:27 PM 48.2 °F 48.2 °F 100% 29.99 in 4.0 mi NE 3.5 mph - N/A Fog Overcast
9:52 PM 50.0 °F 48.0 °F 93% 30.00 in 5.0 mi North 4.6 mph - N/A   Overcast
10:52 PM 51.1 °F 50.0 °F 96% 30.01 in 5.0 mi Calm Calm - N/A   Overcast
11:52 PM 50.0 °F 48.2 °F 94% 30.03 in 5.0 mi NNE 4.6 mph - N/A   Overcast