Dulles Airport, VA

5:47 AM EDT on October 15, 2019 (GMT -0400)
Washington Dulles International

Weather History for KIAD - August, 2019

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Monday, August 26, 2019

  Actual Average Record
Temperature  
Mean Temperature 68 °F 74 °F  
Max Temperature 75 °F 86 °F 95 °F (1975)
Min Temperature 60 °F 63 °F 48 °F (1977)
Degree Days  
Heating Degree Days 0 0  
Month to date heating degree days 0 0  
Since 1 June heating degree days 9 15  
Since 1 July heating degree days 0 0  
Cooling Degree Days 2 9  
Month to date cooling degree days 320 278  
Year to date cooling degree days 1199 970  
Since 1 June cooling degree days 1020 878  
Growing Degree Days 18 (Base 50)    
Moisture  
Dew Point 57 °F    
Average Humidity 72    
Maximum Humidity 86    
Minimum Humidity 54    
Precipitation  
Precipitation 0.00 in 0.11 in 1.48 in (1965)
Month to date precipitation 4.51 3.02  
Year to date precipitation 29.56 27.49  
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 30.16 in    
Wind  
Wind Speed 5 mph ()    
Max Wind Speed 13 mph    
Max Gust Speed 16 mph    
Visibility 10.0 miles    
Events      
T = Trace of Precipitation, MM = Missing Value Source: Averaged Metar Reports

Daily Weather History Graph

Daily Weather History Graph

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Astronomy

Aug. 26, 2019 Rise Set
Actual Time 6:33 AM EDT 7:49 PM EDT
Civil Twilight 6:05 AM EDT 8:17 PM EDT
Nautical Twilight 5:32 AM EDT 8:50 PM EDT
Astronomical Twilight 4:57 AM EDT 9:24 PM EDT
Moon 1:58 AM EDT (8/26) 5:08 PM EDT (8/26)
Length of Visible Light 14h 11m
Length of Day
13h 16m
Waning Crescent, 19% of the Moon is Illuminated
Aug 26
Waning Crescent
Aug 30
New
Sep 5
First Quarter
Sep 14
Full
Sep 21
Last Quarter

Hourly Weather History & Observations

Time (EDT) Temp. Dew Point Humidity Pressure Visibility Wind Dir Wind Speed Gust Speed Precip Events Conditions
12:52 AM 63.0 °F 55.9 °F 78% 30.19 in 10.0 mi ENE 4.6 mph - N/A   Mostly Cloudy
1:52 AM 61.0 °F 55.0 °F 81% 30.19 in 10.0 mi Calm Calm - N/A   Mostly Cloudy
2:52 AM 63.0 °F 55.9 °F 78% 30.18 in 10.0 mi North 4.6 mph - N/A   Mostly Cloudy
3:52 AM 60.1 °F 55.9 °F 86% 30.17 in 10.0 mi NNE 4.6 mph - N/A   Scattered Clouds
4:52 AM 62.1 °F 55.9 °F 80% 30.18 in 10.0 mi North 5.8 mph - N/A   Scattered Clouds
5:23 AM 62.1 °F 55.9 °F 80% 30.19 in 10.0 mi North 6.9 mph - N/A   Mostly Cloudy
5:52 AM 62.1 °F 55.9 °F 80% 30.19 in 10.0 mi NNE 8.1 mph - N/A   Mostly Cloudy
6:52 AM 62.1 °F 55.9 °F 80% 30.20 in 10.0 mi NNE 8.1 mph - N/A   Overcast
7:36 AM 62.1 °F 55.9 °F 80% 30.20 in 10.0 mi NNE 6.9 mph - N/A   Mostly Cloudy
7:52 AM 63.0 °F 55.9 °F 78% 30.19 in 10.0 mi NNE 6.9 mph - N/A   Mostly Cloudy
8:52 AM 64.9 °F 57.0 °F 75% 30.20 in 10.0 mi NE 8.1 mph - N/A   Mostly Cloudy
9:52 AM 66.9 °F 57.9 °F 73% 30.20 in 10.0 mi ENE 6.9 mph - N/A   Mostly Cloudy
10:52 AM 69.1 °F 57.9 °F 68% 30.19 in 10.0 mi East 6.9 mph - N/A   Overcast
11:52 AM 71.1 °F 57.9 °F 63% 30.18 in 10.0 mi ESE 8.1 mph - N/A   Overcast
11:59 AM 72.0 °F 59.0 °F 64% 30.18 in 10.0 mi ESE 8.1 mph - N/A   Overcast
12:20 PM 71.1 °F 57.9 °F 63% 30.17 in 10.0 mi ENE 4.6 mph - N/A   Mostly Cloudy
12:52 PM 72.0 °F 57.9 °F 61% 30.16 in 10.0 mi Variable 3.5 mph - N/A   Mostly Cloudy
1:52 PM 73.9 °F 57.0 °F 55% 30.15 in 10.0 mi ENE 5.8 mph - N/A   Mostly Cloudy
2:52 PM 75.0 °F 57.9 °F 55% 30.13 in 10.0 mi SE 8.1 mph - N/A   Mostly Cloudy
3:52 PM 73.9 °F 59.0 °F 59% 30.12 in 10.0 mi ESE 9.2 mph - N/A   Mostly Cloudy
4:52 PM 73.9 °F 59.0 °F 59% 30.10 in 10.0 mi East 11.5 mph - N/A   Mostly Cloudy
5:52 PM 73.0 °F 59.0 °F 61% 30.10 in 10.0 mi ESE 11.5 mph - N/A   Mostly Cloudy
6:52 PM 72.0 °F 59.0 °F 64% 30.10 in 10.0 mi East 10.4 mph - N/A   Mostly Cloudy
7:52 PM 69.1 °F 57.9 °F 68% 30.09 in 10.0 mi East 6.9 mph - N/A   Mostly Cloudy
8:52 PM 68.0 °F 59.0 °F 73% 30.10 in 10.0 mi SE 3.5 mph - N/A   Overcast
9:52 PM 66.9 °F 59.0 °F 76% 30.13 in 10.0 mi Calm Calm - N/A   Mostly Cloudy
10:52 PM 64.0 °F 59.0 °F 84% 30.13 in 10.0 mi SE 3.5 mph - N/A   Mostly Cloudy
11:52 PM 64.0 °F 59.0 °F 84% 30.13 in 10.0 mi SE 3.5 mph - N/A   Mostly Cloudy