Dulles Airport, VA

2:41 PM EDT on April 22, 2018 (GMT -0400)
Washington Dulles International

Weather History for KIAD - October, 2011

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Tuesday, October 18, 2011

  Actual Average Record
Temperature  
Mean Temperature 61 °F 55 °F  
Max Temperature 73 °F 68 °F 85 °F (2016)
Min Temperature 48 °F 43 °F 27 °F (1976)
Degree Days  
Heating Degree Days 4 10  
Month to date heating degree days 108 140  
Since 1 July heating degree days 141 198  
Cooling Degree Days 0 0  
Month to date cooling degree days 2 16  
Year to date cooling degree days 1497 1173  
Growing Degree Days 8 (Base 50)    
Moisture  
Dew Point 50 °F    
Average Humidity 71    
Maximum Humidity 100    
Minimum Humidity 41    
Precipitation  
Precipitation T in 0.10 in 2.09 in (1996)
Month to date precipitation 3.96 1.88  
Year to date precipitation 37.25 33.80  
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 29.82 in    
Wind  
Wind Speed 4 mph (East)    
Max Wind Speed 10 mph    
Max Gust Speed 13 mph    
Visibility 10 miles    
Events Rain    
T = Trace of Precipitation, MM = Missing Value Source: NWS Daily Summary

Daily Weather History Graph

Daily Weather History Graph

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Astronomy

Oct. 18, 2011 Rise Set
Actual Time 7:22 AM EDT 6:27 PM EDT
Civil Twilight 6:55 AM EDT 6:54 PM EDT
Nautical Twilight 6:24 AM EDT 7:25 PM EDT
Astronomical Twilight 5:53 AM EDT 7:56 PM EDT
Moon 11:08 PM EDT (10/18) 1:09 PM EDT (10/18)
Length of Visible Light 11h 59m
Length of Day
11h 05m
Waning Gibbous, 65% of the Moon is Illuminated
Oct 18
Waning Gibbous
Oct 19
Last Quarter
Oct 26
New
Nov 2
First Quarter
Nov 10
Full

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 - 48.0 °F 93% 29.82 in 10.0 mi Calm Calm - N/A   Clear
1:52 AM 48.9 °F - 46.9 °F 93% 29.83 in 10.0 mi Calm Calm - N/A   Partly Cloudy
2:52 AM 48.0 °F - 46.0 °F 93% 29.83 in 10.0 mi Calm Calm - N/A   Clear
3:52 AM 50.0 °F - 48.0 °F 93% 29.82 in 10.0 mi Calm Calm - N/A   Mostly Cloudy
4:52 AM 51.8 °F - 50.0 °F 94% 29.84 in 10.0 mi NW 4.6 mph - N/A   Mostly Cloudy
5:52 AM 52.0 °F - 50.0 °F 93% 29.85 in 10.0 mi Calm Calm - N/A   Mostly Cloudy
6:52 AM 52.0 °F - 50.0 °F 93% 29.86 in 10.0 mi Calm Calm - N/A   Mostly Cloudy
7:52 AM 52.0 °F - 50.0 °F 93% 29.85 in 10.0 mi Calm Calm - N/A   Mostly Cloudy
8:52 AM 57.9 °F - 53.1 °F 84% 29.87 in 10.0 mi Calm Calm - N/A   Mostly Cloudy
9:52 AM 62.1 °F - 53.1 °F 72% 29.88 in 10.0 mi Calm Calm - N/A   Mostly Cloudy
10:50 AM 44.6 °F 41.4 °F 44.6 °F 100% 29.84 in 10.0 mi North 5.8 mph - N/A Rain Light Rain
10:52 AM 66.0 °F - 53.1 °F 63% 29.88 in 10.0 mi NW 4.6 mph - N/A   Mostly Cloudy
11:52 AM 69.1 °F - 51.1 °F 53% 29.87 in 10.0 mi ESE 6.9 mph - N/A   Mostly Cloudy
12:52 PM 70.0 °F - 48.9 °F 47% 29.86 in 10.0 mi SE 6.9 mph - N/A   Clear
1:52 PM 72.0 °F - 46.9 °F 41% 29.82 in 10.0 mi South 5.8 mph - N/A   Mostly Cloudy
2:52 PM 72.0 °F - 46.0 °F 40% 29.80 in 10.0 mi East 6.9 mph - N/A   Mostly Cloudy
3:52 PM 71.1 °F - 50.0 °F 47% 29.78 in 10.0 mi ESE 5.8 mph - N/A   Mostly Cloudy
4:52 PM 72.0 °F - 48.9 °F 44% 29.78 in 10.0 mi SE 8.1 mph - N/A   Scattered Clouds
5:52 PM 69.1 °F - 53.1 °F 57% 29.79 in 10.0 mi SE 6.9 mph - N/A   Scattered Clouds
6:52 PM 66.0 °F - 53.1 °F 63% 29.78 in 10.0 mi ESE 3.5 mph - N/A   Scattered Clouds
7:52 PM 62.1 °F - 54.0 °F 75% 29.80 in 10.0 mi ESE 5.8 mph - N/A   Overcast
8:52 PM 64.0 °F - 53.1 °F 67% 29.78 in 10.0 mi East 3.5 mph - N/A   Overcast
9:52 PM 64.0 °F - 51.1 °F 63% 29.78 in 10.0 mi East 4.6 mph - N/A   Overcast
10:52 PM 63.0 °F - 52.0 °F 67% 29.77 in 10.0 mi East 4.6 mph - N/A   Overcast
11:52 PM 62.1 °F - 53.1 °F 72% 29.75 in 10.0 mi NE 5.8 mph - N/A   Overcast