Weather History for Washington, DC

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Saturday, September 8, 2012

  Actual Average Record
Temperature  
Mean Temperature 79 °F 74 °F  
Max Temperature 91 °F 82 °F 100 °F (1939)
Min Temperature 66 °F 65 °F 52 °F (1988)
Degree Days  
Heating Degree Days 0 0  
Month to date heating degree days 0 0  
Since 1 July heating degree days 0 0  
Cooling Degree Days 14 9  
Month to date cooling degree days 129 80  
Year to date cooling degree days 1830 1391  
Growing Degree Days 28 (Base 50)    
Moisture  
Dew Point 68 °F    
Average Humidity 73    
Maximum Humidity 94    
Minimum Humidity 52    
Precipitation  
Precipitation 0.49 in 0.12 in 2.93 in (1969)
Month to date precipitation 2.44 0.88  
Year to date precipitation 21.15 27.28  
Snow  
Snow 0.00 in 0.00 in - ()
Month to date snowfall 0.0 0.0  
Since 1 July snowfall 0.0 0.0  
Snow Depth 0.00 in    
Sea Level Pressure  
Sea Level Pressure 29.75 in    
Wind  
Wind Speed 12 mph (SSW)    
Max Wind Speed 40 mph    
Max Gust Speed 58 mph    
Visibility 8 miles    
Events Fog , Rain , Thunderstorm    
T = Trace of Precipitation, MM = Missing Value Source: NWS Daily Summary

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Date:

Astronomy

Sep. 08, 2012 Rise Set
Actual Time 6:43 AM EDT 7:26 PM EDT
Civil Twilight 6:16 AM EDT 7:53 PM EDT
Nautical Twilight 5:44 AM EDT 8:25 PM EDT
Astronomical Twilight 5:12 AM EDT 8:58 PM EDT
Moon No Moon Rise 2:19 PM EDT (9/8)
Length of Visible Light 13h 36m
Length of Day
12h 43m
Waning Gibbous, 49% of the Moon is Illuminated
Sep 8
Waning Gibbous
Sep 15
New
Sep 22
First Quarter
Sep 29
Full
Oct 8
Last Quarter

Hourly Weather History & Observations

Time (EDT) Temp. Heat Index Dew Point Humidity Pressure Visibility Wind Dir Wind Speed Gust Speed Precip Events Conditions
12:35 AM 75.2 °F - 71.6 °F 89% 29.88 in 10.0 mi South 10.4 mph - N/A   Mostly Cloudy
12:52 AM 75.0 °F - 71.1 °F 87% 29.88 in 10.0 mi SSW 10.4 mph - N/A   Mostly Cloudy
1:52 AM 75.9 °F - 72.0 °F 87% 29.84 in 10.0 mi South 11.5 mph - N/A   Overcast
2:28 AM 75.2 °F - 71.6 °F 89% 29.83 in 10.0 mi South 13.8 mph - N/A   Mostly Cloudy
2:37 AM 75.2 °F - 71.6 °F 89% 29.83 in 10.0 mi South 11.5 mph - N/A   Overcast
2:52 AM 75.0 °F - 72.0 °F 90% 29.82 in 10.0 mi SSW 13.8 mph - N/A   Mostly Cloudy
3:52 AM 75.9 °F - 72.0 °F 87% 29.81 in 9.0 mi SSW 9.2 mph - N/A   Overcast
4:07 AM 75.2 °F - 71.6 °F 89% 29.80 in 8.0 mi South 9.2 mph - N/A   Overcast
4:52 AM 75.9 °F - 73.0 °F 91% 29.80 in 5.0 mi SSW 9.2 mph - N/A   Overcast
5:52 AM 75.9 °F - 73.0 °F 91% 29.78 in 5.0 mi South 8.1 mph - N/A   Overcast
6:15 AM 75.2 °F - 73.4 °F 94% 29.78 in 5.0 mi South 10.4 mph - N/A   Mostly Cloudy
6:52 AM 75.9 °F - 72.0 °F 87% 29.78 in 6.0 mi South 10.4 mph - N/A   Overcast
7:32 AM 75.2 °F - 71.6 °F 89% 29.76 in 8.0 mi South 11.5 mph - N/A   Overcast
7:52 AM 75.9 °F - 72.0 °F 87% 29.76 in 8.0 mi South 9.2 mph - N/A   Overcast
8:09 AM 75.2 °F - 71.6 °F 89% 29.76 in 8.0 mi South 13.8 mph - N/A   Mostly Cloudy
8:17 AM 75.2 °F - 71.6 °F 89% 29.76 in 8.0 mi South 10.4 mph - N/A   Mostly Cloudy
8:23 AM 75.2 °F - 71.6 °F 89% 29.76 in 9.0 mi South 11.5 mph - N/A   Mostly Cloudy
8:52 AM 78.1 °F - 72.0 °F 81% 29.75 in 10.0 mi SSW 10.4 mph - N/A   Mostly Cloudy
9:09 AM 78.8 °F - 71.6 °F 78% 29.75 in 10.0 mi South 12.7 mph - N/A   Mostly Cloudy
9:25 AM 78.8 °F - 71.6 °F 78% 29.74 in 10.0 mi South 13.8 mph - N/A   Mostly Cloudy
9:33 AM 78.8 °F - 71.6 °F 78% 29.74 in 10.0 mi SSW 13.8 mph - N/A   Mostly Cloudy
9:43 AM 78.8 °F - 71.6 °F 78% 29.74 in 10.0 mi SSW 13.8 mph - N/A   Mostly Cloudy
9:52 AM 79.0 °F - 70.0 °F 74% 29.74 in 10.0 mi SSW 16.1 mph 21.9 mph N/A   Mostly Cloudy
10:52 AM 82.0 °F 86.7 °F 72.0 °F 71% 29.72 in 10.0 mi South 16.1 mph - N/A   Scattered Clouds
11:52 AM 84.9 °F 89.4 °F 70.0 °F 61% 29.70 in 10.0 mi South 18.4 mph 27.6 mph N/A   Scattered Clouds
12:52 PM 87.1 °F 91.3 °F 69.1 °F 55% 29.67 in 10.0 mi SSW 20.7 mph 29.9 mph N/A   Mostly Cloudy
1:52 PM 89.1 °F 93.7 °F 69.1 °F 52% 29.65 in 10.0 mi South 21.9 mph 27.6 mph N/A   Mostly Cloudy
2:52 PM 89.1 °F 93.7 °F 69.1 °F 52% 29.62 in 10.0 mi SSW 18.4 mph 28.8 mph N/A   Mostly Cloudy
3:37 PM 89.6 °F 93.4 °F 68.0 °F 49% 29.59 in 10.0 mi SW 19.6 mph - N/A   Mostly Cloudy
3:52 PM 88.0 °F 91.4 °F 68.0 °F 51% 29.60 in 10.0 mi SSW 20.7 mph 25.3 mph N/A Thunderstorm Thunderstorm
3:59 PM 80.6 °F 82.3 °F 64.4 °F 58% 29.66 in 1.5 mi NNW 38.0 mph 57.5 mph 0.00 in Rain , Thunderstorm Heavy Thunderstorms and Rain
4:01 PM 71.6 °F - 64.4 °F 78% 29.68 in 0.5 mi NNW 29.9 mph 57.5 mph 0.00 in Rain , Thunderstorm Heavy Thunderstorms and Rain
4:11 PM 66.2 °F - 62.6 °F 88% 29.70 in 0.5 mi NNW 29.9 mph 50.6 mph 0.20 in Fog , Rain , Thunderstorm Heavy Thunderstorms and Rain
4:18 PM 66.2 °F - 62.6 °F 88% 29.70 in 2.0 mi NNW 23.0 mph 40.3 mph 0.38 in Rain , Thunderstorm Heavy Thunderstorms and Rain
4:22 PM 66.2 °F - 62.6 °F 88% 29.70 in 4.0 mi NNW 16.1 mph 39.1 mph 0.40 in Rain , Thunderstorm Light Thunderstorms and Rain
4:32 PM 66.2 °F - 62.6 °F 88% 29.70 in 4.0 mi North 11.5 mph 26.5 mph 0.41 in Rain Light Rain
4:37 PM 66.2 °F - 62.6 °F 88% 29.71 in 7.0 mi NNW 10.4 mph - 0.42 in Rain Light Rain
4:52 PM 66.0 °F - 62.1 °F 87% 29.69 in 8.0 mi NE 8.1 mph - 0.44 in Rain Light Rain
5:52 PM 68.0 °F - 63.0 °F 84% 29.74 in 7.0 mi SSW 8.1 mph - 0.03 in Rain Light Rain
6:52 PM 68.0 °F - 63.0 °F 84% 29.75 in 10.0 mi SSW 5.8 mph - 0.02 in Rain Light Rain
7:52 PM 68.0 °F - 64.0 °F 87% 29.77 in 10.0 mi SW 4.6 mph - 0.00 in Rain Light Rain
8:52 PM 68.0 °F - 64.9 °F 90% 29.80 in 10.0 mi WSW 3.5 mph - 0.00 in   Overcast
9:52 PM 69.1 °F - 64.9 °F 87% 29.83 in 10.0 mi West 6.9 mph - N/A   Overcast
10:52 PM 68.0 °F - 60.1 °F 76% 29.82 in 10.0 mi NNW 12.7 mph - N/A   Overcast
11:52 PM 68.0 °F - 59.0 °F 73% 29.87 in 10.0 mi NW 6.9 mph - N/A   Overcast