Weather History for Washington, DC

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Friday, April 11, 2008

  Actual Average Record
Temperature  
Mean Temperature 70 °F 55 °F  
Max Temperature 82 °F 65 °F 91 °F (1930)
Min Temperature 57 °F 46 °F 26 °F (1909)
Degree Days  
Heating Degree Days 0 10  
Month to date heating degree days 109 128  
Since 1 July heating degree days 3301 3804  
Cooling Degree Days 5 1  
Month to date cooling degree days 5 2  
Year to date cooling degree days 5 4  
Growing Degree Days 19 (Base 50)    
Moisture  
Dew Point 57 °F    
Average Humidity 69    
Maximum Humidity 93    
Minimum Humidity 45    
Precipitation  
Precipitation 0.09 in 0.10 in 1.93 in (1919)
Month to date precipitation 1.32 1.19  
Year to date precipitation 9.66 10.10  
Snow  
Snow 0.00 in 0.00 in 2.00 in (1894)
Month to date snowfall 0.0 0.0  
Since 1 July snowfall 4.9 15.4  
Snow Depth 0.00 in    
Sea Level Pressure  
Sea Level Pressure 29.86 in    
Wind  
Wind Speed 10 mph (South)    
Max Wind Speed 37 mph    
Max Gust Speed 48 mph    
Visibility 10 miles    
Events Rain    
T = Trace of Precipitation, MM = Missing Value Source: NWS Daily Summary

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Date:

Astronomy

Apr. 11, 2008 Rise Set
Actual Time 6:36 AM EDT 7:41 PM EDT
Civil Twilight 6:09 AM EDT 8:09 PM EDT
Nautical Twilight 5:37 AM EDT 8:41 PM EDT
Astronomical Twilight 5:03 AM EDT 9:15 PM EDT
Moon 10:42 AM EDT (4/11) 1:35 AM EDT (4/11)
Length of Visible Light 13h 59m
Length of Day
13h 04m
Waxing Crescent, 38% of the Moon is Illuminated
Apr 11
Waxing Crescent
Apr 12
First Quarter
Apr 20
Full
Apr 28
Last Quarter
May 5
New

Hourly Weather History & Observations

Time (EDT) Temp. Heat Index Dew Point Humidity Pressure Visibility Wind Dir Wind Speed Gust Speed Precip Events Conditions
12:52 AM 61.0 °F - 53.1 °F 75% 30.04 in 10.0 mi SE 3.5 mph - N/A   Overcast
1:52 AM 60.1 °F - 54.0 °F 80% 30.04 in 10.0 mi SE 4.6 mph - N/A   Overcast
2:52 AM 59.0 °F - 55.0 °F 87% 30.02 in 10.0 mi South 4.6 mph - N/A   Overcast
3:52 AM 59.0 °F - 55.0 °F 87% 30.00 in 10.0 mi SSE 4.6 mph - N/A   Overcast
4:52 AM 57.9 °F - 55.0 °F 90% 30.01 in 10.0 mi South 4.6 mph - N/A   Mostly Cloudy
5:52 AM 59.0 °F - 55.0 °F 87% 30.01 in 10.0 mi Calm Calm - N/A   Overcast
6:31 AM 57.2 °F - 55.4 °F 94% 30.01 in 10.0 mi Calm Calm - N/A   Overcast
6:52 AM 57.0 °F - 55.0 °F 93% 30.01 in 10.0 mi SE 3.5 mph - N/A   Overcast
7:33 AM 57.2 °F - 55.4 °F 94% 30.00 in 10.0 mi South 4.6 mph - N/A   Overcast
7:52 AM 59.0 °F - 55.9 °F 90% 29.99 in 10.0 mi South 6.9 mph - N/A   Overcast
8:10 AM 60.8 °F - 57.2 °F 88% 29.99 in 10.0 mi South 6.9 mph - N/A   Overcast
8:14 AM 60.8 °F - 57.2 °F 88% 29.99 in 10.0 mi South 6.9 mph - N/A   Overcast
8:52 AM 61.0 °F - 57.0 °F 87% 29.98 in 10.0 mi South 10.4 mph - N/A   Overcast
9:52 AM 66.9 °F - 59.0 °F 76% 29.96 in 10.0 mi South 13.8 mph - N/A   Overcast
10:52 AM 66.0 °F - 57.9 °F 75% 29.94 in 10.0 mi South 10.4 mph - N/A   Overcast
11:52 AM 73.0 °F - 59.0 °F 61% 29.90 in 10.0 mi South 17.3 mph 23.0 mph N/A   Overcast
12:52 PM 75.0 °F - 57.9 °F 55% 29.86 in 10.0 mi South 15.0 mph - N/A   Overcast
1:52 PM 78.1 °F - 57.0 °F 48% 29.83 in 10.0 mi South 17.3 mph 23.0 mph N/A   Overcast
2:52 PM 78.1 °F - 57.0 °F 48% 29.80 in 10.0 mi SSW 17.3 mph 24.2 mph N/A   Overcast
3:52 PM 81.0 °F 81.1 °F 57.9 °F 45% 29.77 in 10.0 mi South 15.0 mph 24.2 mph N/A   Mostly Cloudy
4:52 PM 80.1 °F 80.7 °F 59.0 °F 48% 29.74 in 10.0 mi South 15.0 mph - N/A   Mostly Cloudy
5:30 PM 80.6 °F 80.8 °F 57.2 °F 45% 29.72 in 10.0 mi South 16.1 mph - N/A   Overcast
5:52 PM 75.9 °F - 57.9 °F 54% 29.72 in 10.0 mi South 13.8 mph - N/A   Overcast
6:52 PM 77.0 °F - 57.9 °F 52% 29.70 in 10.0 mi South 11.5 mph - N/A   Mostly Cloudy
7:41 PM 73.4 °F - 57.2 °F 57% 29.71 in 10.0 mi South 9.2 mph - N/A   Overcast
7:52 PM 75.0 °F - 57.9 °F 55% 29.71 in 10.0 mi South 8.1 mph - N/A   Overcast
8:52 PM 73.0 °F - 57.9 °F 59% 29.70 in 10.0 mi South 11.5 mph - N/A   Mostly Cloudy
9:52 PM 72.0 °F - 57.9 °F 61% 29.72 in 10.0 mi South 12.7 mph - N/A   Overcast
10:10 PM 71.6 °F - 57.2 °F 60% 29.71 in 10.0 mi South 12.7 mph - N/A   Overcast
10:30 PM 71.6 °F - 59.0 °F 64% 29.78 in 4.0 mi WNW 27.6 mph 48.3 mph 0.00 in Rain Light Rain
10:41 PM 66.2 °F - 60.8 °F 83% 29.77 in 6.0 mi NW 17.3 mph 38.0 mph 0.08 in Rain Light Rain
10:52 PM 66.0 °F - 60.1 °F 81% 29.74 in 10.0 mi NW 16.1 mph 21.9 mph 0.09 in Rain Light Rain
11:22 PM 64.4 °F - 60.8 °F 88% 29.72 in 10.0 mi ENE 3.5 mph - 0.00 in   Overcast
11:52 PM 64.0 °F - 60.1 °F 87% 29.71 in 10.0 mi Calm Calm - 0.00 in   Overcast