Weather History for Washington, DC

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Thursday, September 26, 2013

  Actual Average Record
Temperature  
Mean Temperature 68 °F 67 °F  
Max Temperature 77 °F 76 °F 96 °F (1930)
Min Temperature 59 °F 58 °F 38 °F (1879)
Degree Days  
Heating Degree Days 0 2  
Month to date heating degree days 9 13  
Since 1 July heating degree days 9 13  
Cooling Degree Days 3 4  
Month to date cooling degree days 198 190  
Year to date cooling degree days 1628 1501  
Growing Degree Days 18 (Base 50)    
Moisture  
Dew Point 52 °F    
Average Humidity 60    
Maximum Humidity 84    
Minimum Humidity 36    
Precipitation  
Precipitation 0.00 in 0.13 in 2.25 in (1902)
Month to date precipitation 1.22 3.21  
Year to date precipitation 29.54 29.61  
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 30.01 in    
Wind  
Wind Speed 4 mph (NE)    
Max Wind Speed 12 mph    
Max Gust Speed 14 mph    
Visibility 10 miles    
Events      
T = Trace of Precipitation, MM = Missing Value Source: NWS Daily Summary

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Astronomy

Sep. 26, 2013 Rise Set
Actual Time 6:59 AM EDT 6:58 PM EDT
Civil Twilight 6:33 AM EDT 7:24 PM EDT
Nautical Twilight 6:02 AM EDT 7:55 PM EDT
Astronomical Twilight 5:30 AM EDT 8:27 PM EDT
Moon 11:57 PM EDT (9/26) 1:47 PM EDT (9/26)
Length of Visible Light 12h 51m
Length of Day
11h 58m
Waning Gibbous, 55% of the Moon is Illuminated
Sep 26
Waning Gibbous
Sep 26
Last Quarter
Oct 4
New
Oct 11
First Quarter
Oct 18
Full

Hourly Weather History & Observations

Time (EDT) Temp. Dew Point Humidity Pressure Visibility Wind Dir Wind Speed Gust Speed Precip Events Conditions
12:52 AM 62.1 °F 55.0 °F 78% 29.94 in 10.0 mi North 3.5 mph - N/A   Mostly Cloudy
1:52 AM 62.1 °F 54.0 °F 75% 29.95 in 10.0 mi ENE 4.6 mph - N/A   Overcast
2:52 AM 60.1 °F 55.0 °F 83% 29.94 in 10.0 mi North 4.6 mph - N/A   Overcast
3:52 AM 60.1 °F 54.0 °F 80% 29.94 in 10.0 mi Calm Calm - N/A   Overcast
4:52 AM 61.0 °F 52.0 °F 72% 29.94 in 10.0 mi NE 5.8 mph - N/A   Mostly Cloudy
5:52 AM 60.1 °F 53.1 °F 78% 29.95 in 10.0 mi Calm Calm - N/A   Overcast
6:52 AM 60.1 °F 52.0 °F 75% 29.96 in 10.0 mi NNE 3.5 mph - N/A   Mostly Cloudy
7:52 AM 60.1 °F 54.0 °F 80% 29.99 in 10.0 mi North 4.6 mph - N/A   Overcast
8:52 AM 63.0 °F 53.1 °F 70% 30.00 in 10.0 mi NE 4.6 mph - N/A   Overcast
9:52 AM 64.0 °F 53.1 °F 67% 30.02 in 10.0 mi NE 4.6 mph - N/A   Overcast
10:52 AM 68.0 °F 53.1 °F 59% 30.03 in 10.0 mi NE 6.9 mph - N/A   Mostly Cloudy
11:52 AM 71.1 °F 54.0 °F 55% 30.02 in 10.0 mi NNE 6.9 mph - N/A   Mostly Cloudy
12:52 PM 73.9 °F 50.0 °F 43% 30.02 in 10.0 mi ENE 4.6 mph - N/A   Mostly Cloudy
1:52 PM 75.9 °F 48.9 °F 38% 30.01 in 10.0 mi NE 6.9 mph - N/A   Mostly Cloudy
2:52 PM 75.0 °F 48.9 °F 40% 30.01 in 10.0 mi East 3.5 mph - N/A   Mostly Cloudy
3:52 PM 77.0 °F 48.9 °F 37% 30.00 in 10.0 mi ENE 3.5 mph - N/A   Mostly Cloudy
4:52 PM 75.9 °F 51.1 °F 42% 30.00 in 10.0 mi East 9.2 mph - N/A   Mostly Cloudy
5:52 PM 73.0 °F 51.1 °F 46% 30.01 in 10.0 mi East 10.4 mph - N/A   Scattered Clouds
6:52 PM 72.0 °F 52.0 °F 49% 30.03 in 10.0 mi East 8.1 mph - N/A   Scattered Clouds
7:52 PM 69.1 °F 52.0 °F 54% 30.04 in 10.0 mi ENE 4.6 mph - N/A   Partly Cloudy
8:52 PM 68.0 °F 52.0 °F 56% 30.06 in 10.0 mi Calm Calm - N/A   Clear
9:52 PM 66.9 °F 52.0 °F 59% 30.07 in 10.0 mi Calm Calm - N/A   Clear
10:52 PM 64.9 °F 54.0 °F 68% 30.08 in 10.0 mi NE 3.5 mph - N/A   Partly Cloudy
11:52 PM 64.0 °F 54.0 °F 70% 30.09 in 10.0 mi Calm Calm - N/A   Clear