Dulles Airport, VA

12:11 PM EDT on October 20, 2017 (GMT -0400)
Washington Dulles International

Weather History for KIAD - June, 2013

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Sunday, June 30, 2013

  Actual Average Record
Temperature  
Mean Temperature 77 °F 76 °F  
Max Temperature 86 °F 87 °F 98 °F (1964)
Min Temperature 68 °F 65 °F 51 °F (1989)
Degree Days  
Heating Degree Days 0 0  
Month to date heating degree days 0 13  
Since 1 June heating degree days 0 15  
Since 1 July heating degree days 4560 4717  
Cooling Degree Days 12 11  
Month to date cooling degree days 256 237  
Year to date cooling degree days 395 329  
Since 1 June cooling degree days 256 237  
Growing Degree Days 27 (Base 50)    
Moisture  
Dew Point 70 °F    
Average Humidity 77    
Maximum Humidity 93    
Minimum Humidity 61    
Precipitation  
Precipitation T in 0.13 in 1.25 in (1972)
Month to date precipitation 4.64 3.98  
Year to date precipitation 18.63 20.80  
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 29.78 in    
Wind  
Wind Speed 6 mph (South)    
Max Wind Speed 24 mph    
Max Gust Speed 30 mph    
Visibility 10 miles    
Events Rain , Thunderstorm    
T = Trace of Precipitation, MM = Missing Value Source: NWS Daily Summary

Daily Weather History Graph

Daily Weather History Graph

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Date:

Astronomy

Jun. 30, 2013 Rise Set
Actual Time 5:47 AM EDT 8:39 PM EDT
Civil Twilight 5:15 AM EDT 9:11 PM EDT
Nautical Twilight 4:35 AM EDT 9:51 PM EDT
Astronomical Twilight 3:49 AM EDT 10:37 PM EDT
Moon 12:42 AM EDT (6/30) 1:54 PM EDT (6/30)
Length of Visible Light 15h 55m
Length of Day
14h 51m
Last Quarter, 45% of the Moon is Illuminated
Jun 30
Last Quarter
Jul 8
New
Jul 15
First Quarter
Jul 22
Full
Jul 29
Last 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 75.0 °F - 64.9 °F 71% 29.71 in 10.0 mi Calm Calm - N/A   Mostly Cloudy
1:52 AM 72.0 °F - 64.9 °F 78% 29.71 in 10.0 mi Calm Calm - N/A   Mostly Cloudy
2:52 AM 72.0 °F - 66.0 °F 81% 29.71 in 10.0 mi SE 4.6 mph - N/A   Overcast
3:52 AM 71.1 °F - 66.0 °F 84% 29.69 in 10.0 mi SE 4.6 mph - N/A   Clear
4:52 AM 71.1 °F - 68.0 °F 90% 29.71 in 10.0 mi Calm Calm - N/A   Clear
5:52 AM 71.1 °F - 69.1 °F 93% 29.73 in 10.0 mi South 4.6 mph - N/A   Mostly Cloudy
6:52 AM 72.0 °F - 70.0 °F 93% 29.75 in 9.0 mi SSW 6.9 mph - N/A   Overcast
7:52 AM 73.0 °F - 70.0 °F 90% 29.78 in 9.0 mi SW 8.1 mph - N/A   Overcast
8:52 AM 73.9 °F - 71.1 °F 91% 29.78 in 6.0 mi SW 4.6 mph - N/A   Overcast
9:52 AM 75.0 °F - 71.1 °F 87% 29.79 in 7.0 mi SW 6.9 mph - N/A   Overcast
10:52 AM 75.9 °F - 72.0 °F 87% 29.79 in 6.0 mi SSW 4.6 mph - N/A   Overcast
11:22 AM 77.0 °F - 71.6 °F 83% 29.79 in 8.0 mi South 5.8 mph - N/A   Overcast
11:29 AM 77.0 °F - 71.6 °F 83% 29.79 in 8.0 mi South 4.6 mph - N/A   Mostly Cloudy
11:38 AM 78.8 °F - 71.6 °F 78% 29.79 in 9.0 mi Variable 3.5 mph - N/A   Mostly Cloudy
11:52 AM 79.0 °F - 72.0 °F 79% 29.78 in 10.0 mi South 5.8 mph - N/A   Mostly Cloudy
12:52 PM 82.0 °F 86.7 °F 72.0 °F 71% 29.77 in 10.0 mi Variable 4.6 mph - N/A   Scattered Clouds
1:52 PM 84.0 °F 88.4 °F 70.0 °F 63% 29.77 in 10.0 mi South 6.9 mph - N/A   Mostly Cloudy
2:52 PM 79.0 °F - 70.0 °F 74% 29.78 in 10.0 mi SSW 21.9 mph 27.6 mph 0.00 in Rain Light Rain
3:12 PM 75.2 °F - 69.8 °F 83% 29.78 in 10.0 mi South 8.1 mph 19.6 mph 0.00 in Rain Light Rain
3:52 PM 81.0 °F 84.9 °F 71.1 °F 72% 29.76 in 10.0 mi South 4.6 mph - 0.00 in   Mostly Cloudy
4:52 PM 82.9 °F 88.0 °F 72.0 °F 69% 29.76 in 10.0 mi South 5.8 mph - N/A   Mostly Cloudy
5:52 PM 82.9 °F 88.8 °F 73.0 °F 72% 29.77 in 10.0 mi South 5.8 mph - N/A   Mostly Cloudy
6:52 PM 82.0 °F 86.7 °F 72.0 °F 71% 29.78 in 10.0 mi South 4.6 mph - N/A   Mostly Cloudy
7:52 PM 81.0 °F 85.2 °F 72.0 °F 74% 29.80 in 10.0 mi South 3.5 mph - N/A   Mostly Cloudy
8:52 PM 80.1 °F 84.2 °F 73.0 °F 79% 29.82 in 10.0 mi SSE 3.5 mph - N/A   Mostly Cloudy
9:32 PM 80.6 °F 85.4 °F 73.4 °F 79% 29.84 in 10.0 mi South 6.9 mph - N/A Thunderstorm Thunderstorm
9:52 PM 77.0 °F - 70.0 °F 79% 29.83 in 10.0 mi South 5.8 mph - 0.00 in Rain , Thunderstorm Light Thunderstorms and Rain
10:05 PM 75.2 °F - 69.8 °F 83% 29.85 in 10.0 mi SSE 3.5 mph - 0.00 in Rain , Thunderstorm Light Thunderstorms and Rain
10:21 PM 75.2 °F - 69.8 °F 83% 29.86 in 10.0 mi SSW 6.9 mph - 0.00 in Rain , Thunderstorm Light Thunderstorms and Rain
10:52 PM 77.0 °F - 69.1 °F 76% 29.85 in 10.0 mi SSW 9.2 mph - 0.00 in   Mostly Cloudy
11:52 PM 75.0 °F - 68.0 °F 79% 29.86 in 10.0 mi South 9.2 mph - N/A   Overcast