Weather History for Leesburg, VA

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Thursday, September 12, 2013

  Actual Average (KIAD) Record (KIAD)
Temperature  
Mean Temperature 82 °F 70 °F  
Max Temperature 95 °F 81 °F 95 °F (1998)
Min Temperature 69 °F 58 °F 40 °F (1967)
Degree Days  
Heating Degree Days 0 1  
Month to date heating degree days 5  
Since 1 July heating degree days 7  
Cooling Degree Days 17 5  
Month to date cooling degree days 82  
Year to date cooling degree days 1098  
Growing Degree Days 32 (Base 50)    
Moisture  
Dew Point 72 °F    
Average Humidity 85    
Maximum Humidity 100    
Minimum Humidity 47    
Precipitation  
Precipitation 0.05 in 0.13 in 1.18 in (1965)
Month to date precipitation 1.45  
Year to date precipitation 29.45  
Snow  
Snow 0.00 in 0.00 in - ()
Month to date snowfall 0.0  
Since 1 July snowfall 0.0  
Snow Depth -    
Sea Level Pressure  
Sea Level Pressure 29.89 in    
Wind  
Wind Speed 3 mph (SW)    
Max Wind Speed 16 mph    
Max Gust Speed 26 mph    
Visibility 8 miles    
Events Rain , Thunderstorm    
T = Trace of Precipitation, MM = Missing Value Source: NWS Daily Summary

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Astronomy

Sep. 12, 2013 Rise Set
Actual Time 6:49 AM EDT 7:23 PM EDT
Civil Twilight 6:22 AM EDT 7:49 PM EDT
Nautical Twilight 5:50 AM EDT 8:21 PM EDT
Astronomical Twilight 5:17 AM EDT 8:53 PM EDT
Moon 2:11 PM EDT (9/12) No Moon Set
Length of Visible Light 13h 27m
Length of Day
12h 33m
Waxing Crescent, 50% of the Moon is Illuminated
Sep 12
Waxing Crescent
Sep 12
First Quarter
Sep 19
Full
Sep 26
Last Quarter
Oct 4
New

Hourly Weather History & Observations

Time (EDT) Temp. Heat Index Dew Point Humidity Pressure Visibility Wind Dir Wind Speed Gust Speed Precip Events Conditions
12:15 AM 77.0 °F - 73.4 °F 89% 30.03 in 10.0 mi Calm Calm - N/A   Mostly Cloudy
12:35 AM 78.8 °F - 73.4 °F 83% 30.02 in 10.0 mi Calm Calm - N/A   Scattered Clouds
12:55 AM 77.0 °F - 73.4 °F 89% 30.01 in 10.0 mi SW 4.6 mph - N/A   Clear
1:15 AM 75.2 °F - 73.4 °F 94% 30.00 in 10.0 mi West 3.5 mph - N/A   Clear
1:35 AM 75.2 °F - 73.4 °F 94% 30.00 in 10.0 mi West 3.5 mph - N/A   Clear
1:55 AM 73.4 °F - 73.4 °F 100% 29.99 in 7.0 mi Calm Calm - N/A   Clear
2:15 AM 75.2 °F - 73.4 °F 94% 29.99 in 7.0 mi Calm Calm - N/A   Scattered Clouds
2:35 AM 75.2 °F - 73.4 °F 94% 29.99 in 10.0 mi Calm Calm - N/A   Scattered Clouds
2:55 AM 73.4 °F - 73.4 °F 100% 29.98 in 7.0 mi SSW 3.5 mph - N/A   Clear
3:15 AM 73.4 °F - 73.4 °F 100% 29.98 in 7.0 mi Calm Calm - N/A   Clear
3:35 AM 73.4 °F - 73.4 °F 100% 29.98 in 7.0 mi Calm Calm - N/A   Clear
3:55 AM 73.4 °F - 73.4 °F 100% 29.98 in 7.0 mi Calm Calm - N/A   Clear
4:15 AM 71.6 °F - 71.6 °F 100% 29.97 in 5.0 mi SSW 3.5 mph - N/A   Clear
4:35 AM 71.6 °F - 71.6 °F 100% 29.98 in 5.0 mi Calm Calm - N/A   Clear
4:55 AM 71.6 °F - 71.6 °F 100% 29.97 in 5.0 mi Calm Calm - N/A   Clear
5:15 AM 71.6 °F - 71.6 °F 100% 29.97 in 5.0 mi Calm Calm - N/A   Clear
5:35 AM 71.6 °F - 71.6 °F 100% 29.97 in 4.0 mi Calm Calm - N/A   Clear
5:55 AM 71.6 °F - 71.6 °F 100% 29.97 in 5.0 mi Calm Calm - N/A   Clear
6:15 AM 71.6 °F - 71.6 °F 100% 29.97 in 4.0 mi SSW 3.5 mph - N/A   Clear
6:35 AM 71.6 °F - 71.6 °F 100% 29.98 in 4.0 mi Calm Calm - N/A   Clear
6:55 AM 71.6 °F - 71.6 °F 100% 29.98 in 3.0 mi Calm Calm - N/A   Clear
7:15 AM 71.6 °F - 71.6 °F 100% 29.98 in 2.5 mi Calm Calm - N/A   Clear
7:35 AM 71.6 °F - 71.6 °F 100% 29.98 in 2.0 mi Calm Calm - N/A   Clear
7:55 AM 71.6 °F - 71.6 °F 100% 29.97 in 3.0 mi Calm Calm - N/A   Clear
8:15 AM 73.4 °F - 73.4 °F 100% 29.97 in 5.0 mi Calm Calm - N/A   Clear
8:35 AM 75.2 °F - 73.4 °F 94% 29.96 in 7.0 mi Calm Calm - N/A   Clear
8:55 AM 77.0 °F - 73.4 °F 89% 29.95 in 7.0 mi South 3.5 mph - N/A   Clear
9:15 AM 77.0 °F - 73.4 °F 89% 29.95 in 5.0 mi South 5.8 mph - N/A   Clear
9:35 AM 80.6 °F 85.4 °F 73.4 °F 79% 29.95 in 5.0 mi South 4.6 mph - N/A   Haze
9:55 AM 80.6 °F 85.4 °F 73.4 °F 79% 29.94 in 10.0 mi South 4.6 mph - N/A   Mostly Cloudy
10:15 AM 82.4 °F 88.2 °F 73.4 °F 74% 29.94 in 10.0 mi SSW 4.6 mph - N/A   Scattered Clouds
10:35 AM 82.4 °F 88.2 °F 73.4 °F 74% 29.93 in 10.0 mi SSW 3.5 mph - N/A   Scattered Clouds
10:55 AM 86.0 °F 93.4 °F 73.4 °F 66% 29.93 in 10.0 mi SW 3.5 mph - N/A   Scattered Clouds
11:15 AM 86.0 °F 93.4 °F 73.4 °F 66% 29.93 in 10.0 mi WNW 4.6 mph - N/A   Mostly Cloudy
11:35 AM 87.8 °F 95.6 °F 73.4 °F 62% 29.91 in 10.0 mi WSW 5.8 mph - N/A   Scattered Clouds
11:55 AM 87.8 °F 93.8 °F 71.6 °F 58% 29.91 in 10.0 mi WNW 9.2 mph - N/A   Clear
12:15 PM 89.6 °F 96.2 °F 71.6 °F 55% 29.90 in 10.0 mi SW 6.9 mph - N/A   Clear
12:35 PM 89.6 °F 96.2 °F 71.6 °F 55% 29.89 in 10.0 mi SW 8.1 mph - N/A   Clear
12:55 PM 91.4 °F 98.4 °F 71.6 °F 52% 29.88 in 10.0 mi SW 5.8 mph - N/A   Scattered Clouds
1:15 PM 91.4 °F 98.4 °F 71.6 °F 52% 29.87 in 10.0 mi SW 8.1 mph - N/A   Mostly Cloudy
1:35 PM 91.4 °F 98.4 °F 71.6 °F 52% 29.86 in 10.0 mi WSW 9.2 mph - N/A   Mostly Cloudy
1:55 PM 91.4 °F 96.8 °F 69.8 °F 49% 29.84 in 10.0 mi SW 8.1 mph - N/A Thunderstorm Clear
2:15 PM 95.0 °F 103.2 °F 71.6 °F 47% 29.84 in 10.0 mi WSW 9.2 mph - N/A   Clear
2:35 PM 91.4 °F 96.8 °F 69.8 °F 49% 29.82 in 10.0 mi SW 6.9 mph - N/A   Scattered Clouds
2:55 PM 87.8 °F 93.8 °F 71.6 °F 58% 29.82 in 10.0 mi SW 16.1 mph 26.5 mph N/A Rain , Thunderstorm Thunderstorms and Rain
3:15 PM 82.4 °F 90.9 °F 77.0 °F 84% 29.78 in 10.0 mi SW 4.6 mph - 0.03 in Thunderstorm Scattered Clouds
3:35 PM 82.4 °F 89.5 °F 75.2 °F 79% 29.78 in 10.0 mi NNE 9.2 mph - 0.03 in Thunderstorm Mostly Cloudy
3:55 PM 80.6 °F 84.6 °F 71.6 °F 74% 29.79 in 10.0 mi NE 4.6 mph 10.4 mph 0.03 in Thunderstorm Thunderstorm
4:15 PM 80.6 °F 83.2 °F 68.0 °F 65% 29.80 in 10.0 mi NE 8.1 mph - N/A Thunderstorm Overcast
4:35 PM 80.6 °F 83.9 °F 69.8 °F 70% 29.79 in 10.0 mi SSE 6.9 mph - N/A Thunderstorm Scattered Clouds
4:55 PM 80.6 °F 84.6 °F 71.6 °F 74% 29.80 in 10.0 mi SE 13.8 mph 18.4 mph N/A Thunderstorm Scattered Clouds
5:15 PM 78.8 °F - 71.6 °F 78% 29.79 in 10.0 mi SSE 15.0 mph 19.6 mph N/A   Scattered Clouds
5:35 PM 78.8 °F - 71.6 °F 78% 29.80 in 10.0 mi South 11.5 mph - N/A   Scattered Clouds
5:55 PM 75.2 °F - 69.8 °F 83% 29.82 in 7.0 mi SW 10.4 mph - 0.01 in Rain , Thunderstorm Rain
6:15 PM 73.4 °F - 69.8 °F 88% 29.79 in 10.0 mi SSE 6.9 mph - 0.01 in Thunderstorm Overcast
6:35 PM 71.6 °F - 71.6 °F 100% 29.81 in 7.0 mi West 5.8 mph - 0.01 in Rain Light Rain
6:55 PM 71.6 °F - 71.6 °F 100% 29.79 in 10.0 mi SW 4.6 mph - 0.01 in   Mostly Cloudy
7:15 PM 71.6 °F - 71.6 °F 100% 29.80 in 7.0 mi SW 4.6 mph - N/A   Scattered Clouds
7:35 PM 71.6 °F - 71.6 °F 100% 29.79 in 7.0 mi Calm Calm - N/A   Clear
7:55 PM 69.8 °F - 69.8 °F 100% 29.79 in 7.0 mi Calm Calm - N/A   Clear
8:15 PM 69.8 °F - 69.8 °F 100% 29.80 in 7.0 mi Calm Calm - N/A   Clear
8:35 PM 69.8 °F - 69.8 °F 100% 29.80 in 7.0 mi WSW 4.6 mph - N/A   Clear
8:55 PM 71.6 °F - 69.8 °F 94% 29.80 in 10.0 mi Calm Calm - N/A   Clear
9:15 PM 69.8 °F - 69.8 °F 100% 29.80 in 10.0 mi West 5.8 mph - N/A   Scattered Clouds
9:35 PM 71.6 °F - 69.8 °F 94% 29.80 in 10.0 mi West 4.6 mph - N/A   Mostly Cloudy
9:55 PM 71.6 °F - 69.8 °F 94% 29.80 in 10.0 mi WNW 5.8 mph - N/A   Overcast
10:15 PM 71.6 °F - 69.8 °F 94% 29.79 in 10.0 mi WNW 4.6 mph - N/A   Scattered Clouds
10:35 PM 73.4 °F - 69.8 °F 88% 29.79 in 10.0 mi NW 5.8 mph - N/A   Mostly Cloudy
10:55 PM 73.4 °F - 69.8 °F 88% 29.79 in 10.0 mi NW 4.6 mph - N/A   Overcast
11:15 PM 73.4 °F - 68.0 °F 83% 29.79 in 10.0 mi NW 4.6 mph - N/A   Mostly Cloudy
11:35 PM 71.6 °F - 69.8 °F 94% 29.79 in 10.0 mi WNW 3.5 mph - N/A   Overcast
11:55 PM 71.6 °F - 69.8 °F 94% 29.79 in 10.0 mi NW 3.5 mph - N/A   Overcast