Dulles Airport, VA

1:47 AM EST on November 20, 2017 (GMT -0500)
Washington Dulles International

Weather History for KIAD - May, 2014

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Thursday, May 8, 2014

  Actual Average Record
Temperature  
Mean Temperature 71 °F 61 °F  
Max Temperature 87 °F 73 °F 90 °F (2000)
Min Temperature 55 °F 49 °F 29 °F (1974)
Degree Days  
Heating Degree Days 0 6  
Month to date heating degree days 42 51  
Since 1 July heating degree days 5112 4623  
Cooling Degree Days 6 1  
Month to date cooling degree days 7 8  
Year to date cooling degree days 18 28  
Growing Degree Days 20 (Base 50)    
Moisture  
Dew Point 56 °F    
Average Humidity 64    
Maximum Humidity 93    
Minimum Humidity 35    
Precipitation  
Precipitation 0.00 in 0.13 in 1.46 in (2008)
Month to date precipitation 0.54 1.06  
Year to date precipitation 18.55 13.33  
Snow  
Snow 0.00 in 0.00 in - ()
Month to date snowfall 0.0 0.0  
Since 1 July snowfall 52.8 22.0  
Snow Depth 0.00 in    
Sea Level Pressure  
Sea Level Pressure 30.09 in    
Wind  
Wind Speed 3 mph (South)    
Max Wind Speed 12 mph    
Max Gust Speed 15 mph    
Visibility 9 miles    
Events      
T = Trace of Precipitation, MM = Missing Value Source: NWS Daily Summary

Daily Weather History Graph

Daily Weather History Graph

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Astronomy

May. 08, 2014 Rise Set
Actual Time 6:04 AM EDT 8:09 PM EDT
Civil Twilight 5:34 AM EDT 8:38 PM EDT
Nautical Twilight 4:58 AM EDT 9:14 PM EDT
Astronomical Twilight 4:19 AM EDT 9:53 PM EDT
Moon 2:11 PM EDT (5/8) 2:30 AM EDT (5/8)
Length of Visible Light 15h 04m
Length of Day
14h 05m
Waxing Gibbous, 64% of the Moon is Illuminated
May 8
Waxing Gibbous
May 14
Full
May 21
Last Quarter
May 28
New
Jun 5
First Quarter

Hourly Weather History & Observations

Time (EDT) Temp. Heat Index Dew Point Humidity Pressure Visibility Wind Dir Wind Speed Gust Speed Precip Events Conditions
12:52 AM 55.0 °F - 51.1 °F 86% 30.15 in 10.0 mi Calm Calm - N/A   Mostly Cloudy
1:21 AM 55.4 °F - 51.8 °F 88% 30.13 in 10.0 mi Calm Calm - N/A   Overcast
1:52 AM 55.9 °F - 51.1 °F 84% 30.13 in 10.0 mi ENE 4.6 mph - N/A   Overcast
2:52 AM 55.4 °F - 51.8 °F 88% 30.11 in 10.0 mi Calm Calm - N/A   Overcast
3:52 AM 55.9 °F - 52.0 °F 87% 30.11 in 10.0 mi Calm Calm - N/A   Overcast
4:52 AM 57.0 °F - 53.1 °F 87% 30.11 in 10.0 mi Calm Calm - N/A   Overcast
5:17 AM 55.4 °F - 53.6 °F 94% 30.11 in 10.0 mi Variable 4.6 mph - N/A   Overcast
5:52 AM 55.0 °F - 53.1 °F 93% 30.11 in 10.0 mi Calm Calm - N/A   Overcast
6:25 AM 57.2 °F - 55.4 °F 94% 30.12 in 6.0 mi Calm Calm - N/A   Overcast
6:52 AM 57.0 °F - 55.0 °F 93% 30.14 in 7.0 mi Calm Calm - N/A   Overcast
7:52 AM 57.0 °F - 55.0 °F 93% 30.14 in 5.0 mi Calm Calm - N/A   Overcast
8:05 AM 57.2 °F - 55.4 °F 94% 30.14 in 3.0 mi Calm Calm - N/A   Overcast
8:49 AM 60.8 °F - 55.4 °F 82% 30.14 in 2.5 mi SW 3.5 mph - N/A   Mostly Cloudy
8:52 AM 60.1 °F - 55.9 °F 86% 30.14 in 2.5 mi Calm Calm - N/A   Mostly Cloudy
9:20 AM 62.6 °F - 55.4 °F 77% 30.14 in 5.0 mi Variable 3.5 mph - N/A   Haze
9:52 AM 64.0 °F - 57.0 °F 78% 30.13 in 5.0 mi Calm Calm - N/A   Haze
10:52 AM 69.8 °F - 57.2 °F 64% 30.13 in 10.0 mi Calm Calm - N/A   Scattered Clouds
11:52 AM 71.1 °F - 57.9 °F 63% 30.11 in 10.0 mi Calm Calm - 0.01 in   Scattered Clouds
12:52 PM 75.9 °F - 60.1 °F 58% 30.09 in 10.0 mi WNW 3.5 mph - N/A   Partly Cloudy
1:52 PM 80.6 °F 81.5 °F 60.8 °F 51% 30.07 in 10.0 mi SW 4.6 mph - N/A   Partly Cloudy
2:52 PM 84.9 °F 83.6 °F 55.0 °F 36% 30.03 in 10.0 mi Variable 4.6 mph - N/A   Mostly Cloudy
3:52 PM 86.0 °F 84.5 °F 55.0 °F 35% 30.01 in 10.0 mi SW 5.8 mph - 0.01 in   Scattered Clouds
4:52 PM 86.0 °F 84.5 °F 55.4 °F 35% 30.01 in 10.0 mi WSW 6.9 mph - N/A   Scattered Clouds
5:52 PM 84.9 °F 83.7 °F 55.9 °F 37% 29.99 in 10.0 mi SSW 4.6 mph - N/A   Mostly Cloudy
6:52 PM 82.9 °F 82.1 °F 55.9 °F 39% 29.99 in 10.0 mi SSE 8.1 mph - N/A   Mostly Cloudy
7:52 PM 78.8 °F - 57.2 °F 47% 30.01 in 10.0 mi SSE 5.8 mph - N/A   Partly Cloudy
8:52 PM 77.0 °F - 57.9 °F 52% 30.02 in 10.0 mi South 4.6 mph - N/A   Partly Cloudy
9:52 PM 75.0 °F - 61.0 °F 62% 30.04 in 10.0 mi SSE 6.9 mph - N/A   Clear
10:52 PM 72.0 °F - 63.0 °F 73% 30.03 in 10.0 mi ESE 6.9 mph - N/A   Partly Cloudy
11:52 PM 70.0 °F - 62.1 °F 76% 30.05 in 10.0 mi Calm Calm - N/A   Clear