Weather History for KIAD - August, 2014

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Wednesday, August 27, 2014

  Actual Average Record
Temperature  
Mean Temperature 73 °F 74 °F  
Max Temperature 87 °F 86 °F 100 °F (1987)
Min Temperature 59 °F 63 °F 46 °F (1969)
Degree Days  
Heating Degree Days 0 0  
Month to date heating degree days 0 0  
Since 1 June heating degree days 5 15  
Since 1 July heating degree days 3 0  
Cooling Degree Days 8 9  
Month to date cooling degree days 188 287  
Year to date cooling degree days 802 979  
Since 1 June cooling degree days 716 887  
Growing Degree Days 23 (Base 50)    
Moisture  
Dew Point 64 °F    
Average Humidity 73    
Maximum Humidity 100    
Minimum Humidity 46    
Precipitation  
Precipitation 0.00 in 0.10 in 1.98 in (1971)
Month to date precipitation 4.71 3.12  
Year to date precipitation 35.77 27.59  
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 30.02 in    
Wind  
Wind Speed 3 mph (WSW)    
Max Wind Speed 9 mph    
Max Gust Speed 12 mph    
Visibility 10 miles    
Events Fog    
T = Trace of Precipitation, MM = Missing Value Source: NWS Daily Summary

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Astronomy

Aug. 27, 2014 Rise Set
Actual Time 6:34 AM EDT 7:47 PM EDT
Civil Twilight 6:06 AM EDT 8:15 PM EDT
Nautical Twilight 5:33 AM EDT 8:48 PM EDT
Astronomical Twilight 4:58 AM EDT 9:22 PM EDT
Moon 8:26 AM EDT (8/27) 8:40 PM EDT (8/27)
Length of Visible Light 14h 08m
Length of Day
13h 13m
Waxing Crescent, 4% of the Moon is Illuminated
Aug 27
Waxing Crescent
Sep 2
First Quarter
Sep 8
Full
Sep 15
Last Quarter
Sep 24
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 64.0 °F - 63.0 °F 96% 30.09 in 10.0 mi Calm Calm - N/A   Clear
1:52 AM 63.0 °F - 62.1 °F 97% 30.07 in 10.0 mi Calm Calm - N/A   Clear
2:52 AM 63.0 °F - 61.0 °F 93% 30.06 in 10.0 mi Calm Calm - N/A   Clear
3:52 AM 61.0 °F - 60.1 °F 97% 30.05 in 9.0 mi NW 3.5 mph - N/A   Clear
4:52 AM 60.8 °F - 60.8 °F 100% 30.06 in 9.0 mi Calm Calm - N/A   Clear
5:52 AM 61.0 °F - 60.1 °F 97% 30.06 in 10.0 mi NW 3.5 mph - N/A   Clear
6:52 AM 59.0 °F - 57.9 °F 96% 30.08 in 7.0 mi Calm Calm - N/A Fog Patches of Fog
7:52 AM 66.0 °F - 62.1 °F 87% 30.09 in 10.0 mi Calm Calm - N/A   Clear
8:52 AM 69.1 °F - 64.0 °F 84% 30.09 in 10.0 mi Calm Calm - N/A   Clear
9:52 AM 73.4 °F - 64.4 °F 73% 30.09 in 10.0 mi WSW 3.5 mph - N/A   Clear
10:52 AM 79.0 °F - 62.1 °F 56% 30.08 in 10.0 mi Variable 3.5 mph - 0.01 in   Clear
11:52 AM 80.1 °F 81.5 °F 63.0 °F 56% 30.06 in 10.0 mi South 3.5 mph - N/A   Clear
12:52 PM 82.0 °F 83.0 °F 62.1 °F 51% 30.04 in 10.0 mi South 5.8 mph - N/A   Partly Cloudy
1:52 PM 84.9 °F 85.4 °F 62.1 °F 46% 30.01 in 10.0 mi Calm Calm - N/A   Partly Cloudy
2:52 PM 84.2 °F 85.6 °F 64.4 °F 51% 30.00 in 10.0 mi Variable 3.5 mph - N/A   Partly Cloudy
3:52 PM 86.0 °F 87.3 °F 64.0 °F 48% 29.96 in 10.0 mi WNW 8.1 mph - N/A   Partly Cloudy
4:52 PM 87.1 °F 88.9 °F 64.9 °F 48% 29.96 in 10.0 mi West 5.8 mph - N/A   Partly Cloudy
5:52 PM 86.0 °F 88.2 °F 66.2 °F 51% 29.95 in 10.0 mi West 4.6 mph - N/A   Partly Cloudy
6:52 PM 84.0 °F 86.3 °F 66.0 °F 55% 29.93 in 10.0 mi West 4.6 mph - N/A   Scattered Clouds
7:52 PM 79.0 °F - 68.0 °F 69% 29.92 in 10.0 mi Calm Calm - N/A   Scattered Clouds
8:52 PM 73.9 °F - 69.1 °F 85% 29.93 in 10.0 mi Calm Calm - N/A   Scattered Clouds
9:52 PM 75.0 °F - 69.1 °F 82% 29.93 in 10.0 mi SSW 3.5 mph - N/A   Scattered Clouds
10:52 PM 73.9 °F - 68.0 °F 82% 29.93 in 10.0 mi South 3.5 mph - N/A   Scattered Clouds
11:52 PM 73.0 °F - 69.1 °F 87% 29.93 in 10.0 mi Calm Calm - N/A   Mostly Cloudy