Dulles Airport, VA

1:24 AM EST on February 25, 2018 (GMT -0500)
Washington Dulles International

Weather History for KIAD - May, 2013

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Sunday, May 5, 2013

  Actual Average Record
Temperature  
Mean Temperature 54 °F 60 °F  
Max Temperature 63 °F 72 °F 88 °F (1980)
Min Temperature 44 °F 48 °F 29 °F (1976)
Degree Days  
Heating Degree Days 11 6  
Month to date heating degree days 47 33  
Since 1 July heating degree days 4461 4605  
Cooling Degree Days 0 1  
Month to date cooling degree days 0 5  
Year to date cooling degree days 30 25  
Growing Degree Days 4 (Base 50)    
Moisture  
Dew Point 39 °F    
Average Humidity 63    
Maximum Humidity 83    
Minimum Humidity 42    
Precipitation  
Precipitation 0.00 in 0.14 in 2.34 in (1989)
Month to date precipitation 0.00 0.66  
Year to date precipitation 10.79 12.93  
Snow  
Snow 0.00 in 0.00 in - ()
Month to date snowfall 0.0 0.0  
Since 1 July snowfall 12.7 22.0  
Snow Depth 0.00 in    
Sea Level Pressure  
Sea Level Pressure 30.21 in    
Wind  
Wind Speed 6 mph (ESE)    
Max Wind Speed 15 mph    
Max Gust Speed 22 mph    
Visibility 10 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. 05, 2013 Rise Set
Actual Time 6:07 AM EDT 8:06 PM EDT
Civil Twilight 5:37 AM EDT 8:35 PM EDT
Nautical Twilight 5:02 AM EDT 9:11 PM EDT
Astronomical Twilight 4:24 AM EDT 9:49 PM EDT
Moon 3:34 AM EDT (5/5) 4:06 PM EDT (5/5)
Length of Visible Light 14h 57m
Length of Day
13h 59m
Waning Crescent, 18% of the Moon is Illuminated
May 5
Waning Crescent
May 9
New
May 18
First Quarter
May 25
Full
May 31
Last Quarter

Hourly Weather History & Observations

Time (EDT) Temp. Windchill Dew Point Humidity Pressure Visibility Wind Dir Wind Speed Gust Speed Precip Events Conditions
12:52 AM 50.0 °F - 37.9 °F 63% 30.23 in 10.0 mi Calm Calm - N/A   Partly Cloudy
1:52 AM 46.9 °F - 37.9 °F 71% 30.22 in 10.0 mi East 3.5 mph - N/A   Clear
2:52 AM 45.0 °F - 37.9 °F 76% 30.21 in 10.0 mi Calm Calm - N/A   Clear
3:52 AM 45.0 °F 41.8 °F 39.0 °F 80% 30.22 in 10.0 mi East 5.8 mph - N/A   Partly Cloudy
4:25 AM 46.4 °F 42.9 °F 39.2 °F 76% 30.21 in 10.0 mi ESE 6.9 mph - N/A   Mostly Cloudy
4:52 AM 46.9 °F - 39.9 °F 77% 30.21 in 10.0 mi East 8.1 mph - N/A   Mostly Cloudy
5:52 AM 46.0 °F 44.8 °F 39.0 °F 76% 30.22 in 10.0 mi ESE 3.5 mph - N/A   Overcast
6:52 AM 46.9 °F - 37.9 °F 71% 30.22 in 10.0 mi NE 12.7 mph - N/A   Overcast
7:52 AM 46.9 °F - 37.0 °F 68% 30.24 in 10.0 mi East 11.5 mph - N/A   Mostly Cloudy
8:52 AM 48.0 °F - 37.9 °F 68% 30.26 in 10.0 mi ENE 8.1 mph - N/A   Mostly Cloudy
9:52 AM 50.0 °F - 37.4 °F 62% 30.24 in 10.0 mi East 8.1 mph - N/A   Overcast
10:52 AM 52.0 °F - 37.9 °F 59% 30.25 in 10.0 mi East 6.9 mph - N/A   Mostly Cloudy
11:50 AM 55.4 °F - 39.2 °F 54% 30.23 in 10.0 mi East 6.9 mph - N/A   Mostly Cloudy
11:52 AM 55.0 °F - 37.9 °F 53% 30.23 in 10.0 mi ESE 6.9 mph - N/A   Mostly Cloudy
12:52 PM 57.0 °F - 37.9 °F 49% 30.22 in 10.0 mi SE 5.8 mph - N/A   Scattered Clouds
1:52 PM 59.0 °F - 39.0 °F 48% 30.20 in 10.0 mi Variable 4.6 mph - N/A   Scattered Clouds
2:52 PM 61.0 °F - 37.9 °F 42% 30.19 in 10.0 mi East 6.9 mph - N/A   Scattered Clouds
3:52 PM 63.0 °F - 39.0 °F 41% 30.17 in 10.0 mi SE 9.2 mph 18.4 mph N/A   Partly Cloudy
4:52 PM 62.1 °F - 39.0 °F 43% 30.15 in 10.0 mi ESE 11.5 mph - N/A   Scattered Clouds
5:52 PM 62.1 °F - 39.0 °F 43% 30.16 in 10.0 mi SSE 10.4 mph - N/A   Scattered Clouds
6:52 PM 60.1 °F - 41.0 °F 49% 30.16 in 10.0 mi ESE 8.1 mph - N/A   Scattered Clouds
7:52 PM 55.9 °F - 42.1 °F 60% 30.17 in 10.0 mi ESE 5.8 mph - N/A   Scattered Clouds
8:52 PM 54.0 °F - 42.1 °F 64% 30.17 in 10.0 mi East 5.8 mph - N/A   Partly Cloudy
9:52 PM 53.1 °F - 42.1 °F 66% 30.18 in 10.0 mi East 3.5 mph - N/A   Partly Cloudy
10:52 PM 48.0 °F - 42.1 °F 80% 30.19 in 10.0 mi Calm Calm - N/A   Partly Cloudy
11:52 PM 46.0 °F - 41.0 °F 83% 30.18 in 10.0 mi Calm Calm - N/A   Partly Cloudy