Weather History for Leesburg, VA

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Saturday, April 20, 2013

  Actual Average (KIAD) Record (KIAD)
Temperature  
Mean Temperature 52 °F 55 °F  
Max Temperature 59 °F 67 °F 88 °F (1976)
Min Temperature 44 °F 43 °F 28 °F (1974)
Degree Days  
Heating Degree Days 14 11  
Month to date heating degree days 223  
Since 1 July heating degree days 4460  
Cooling Degree Days 0 1  
Month to date cooling degree days 5  
Year to date cooling degree days 8  
Growing Degree Days 2 (Base 50)    
Moisture  
Dew Point 32 °F    
Average Humidity 47    
Maximum Humidity 67    
Minimum Humidity 34    
Precipitation  
Precipitation 0.00 in 0.11 in 2.90 in (2008)
Month to date precipitation 1.99  
Year to date precipitation 10.79  
Snow  
Snow 0.00 in 0.00 in T in (1983)
Month to date snowfall 0.3  
Since 1 July snowfall 22.0  
Snow Depth -    
Sea Level Pressure  
Sea Level Pressure 30.07 in    
Wind  
Wind Speed 15 mph (NW)    
Max Wind Speed 25 mph    
Max Gust Speed 37 mph    
Visibility 10 miles    
Events Rain    
T = Trace of Precipitation, MM = Missing Value Source: NWS Daily Summary

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Astronomy

Apr. 20, 2013 Rise Set
Actual Time 6:26 AM EDT 7:52 PM EDT
Civil Twilight 5:58 AM EDT 8:20 PM EDT
Nautical Twilight 5:24 AM EDT 8:54 PM EDT
Astronomical Twilight 4:49 AM EDT 9:30 PM EDT
Moon 2:36 PM EDT (4/20) 3:11 AM EDT (4/20)
Length of Visible Light 14h 22m
Length of Day
13h 26m
Waxing Gibbous, 71% of the Moon is Illuminated
Apr 20
Waxing Gibbous
Apr 25
Full
May 2
Last Quarter
May 9
New
May 18
First Quarter

Hourly Weather History & Observations

Time (EDT) Temp. Windchill Dew Point Humidity Pressure Visibility Wind Dir Wind Speed Gust Speed Precip Events Conditions
12:15 AM 51.8 °F - 41.0 °F 67% 29.80 in 10.0 mi NNW 16.1 mph 25.3 mph N/A Rain Light Rain
12:35 AM 51.8 °F - 41.0 °F 67% 29.82 in 10.0 mi NNW 13.8 mph 20.7 mph N/A   Overcast
12:55 AM 53.6 °F - 39.2 °F 58% 29.81 in 10.0 mi NNW 15.0 mph 24.2 mph N/A   Overcast
1:15 AM 53.6 °F - 37.4 °F 54% 29.82 in 10.0 mi NW 17.3 mph 25.3 mph N/A   Overcast
1:35 AM 53.6 °F - 37.4 °F 54% 29.83 in 10.0 mi NW 18.4 mph 27.6 mph N/A   Overcast
1:55 AM 51.8 °F - 37.4 °F 58% 29.84 in 10.0 mi WNW 11.5 mph 20.7 mph N/A   Overcast
2:15 AM 51.8 °F - 37.4 °F 58% 29.85 in 10.0 mi NW 16.1 mph 26.5 mph N/A   Overcast
2:35 AM 51.8 °F - 35.6 °F 54% 29.86 in 10.0 mi NW 20.7 mph 29.9 mph N/A   Overcast
2:55 AM 51.8 °F - 35.6 °F 54% 29.86 in 10.0 mi NW 15.0 mph 24.2 mph N/A   Overcast
3:15 AM 50.0 °F - 35.6 °F 58% 29.87 in 10.0 mi NW 12.7 mph 19.6 mph N/A   Mostly Cloudy
3:35 AM 50.0 °F - 33.8 °F 54% 29.89 in 10.0 mi NW 12.7 mph 25.3 mph N/A   Mostly Cloudy
3:55 AM 50.0 °F - 33.8 °F 54% 29.90 in 10.0 mi NW 18.4 mph 24.2 mph N/A   Scattered Clouds
4:15 AM 50.0 °F - 33.8 °F 54% 29.91 in 10.0 mi NW 11.5 mph 19.6 mph N/A   Clear
4:35 AM 50.0 °F - 33.8 °F 54% 29.92 in 10.0 mi NW 12.7 mph 21.9 mph N/A   Clear
4:55 AM 50.0 °F - 32.0 °F 50% 29.93 in 10.0 mi NW 11.5 mph 20.7 mph N/A   Clear
5:15 AM 50.0 °F - 32.0 °F 50% 29.94 in 10.0 mi NW 13.8 mph 24.2 mph N/A   Clear
5:35 AM 48.2 °F - 32.0 °F 54% 29.95 in 10.0 mi NW 12.7 mph 23.0 mph N/A   Clear
5:55 AM 48.2 °F - 32.0 °F 54% 29.96 in 10.0 mi NNW 10.4 mph - N/A   Clear
6:15 AM 46.4 °F 39.5 °F 32.0 °F 57% 29.98 in 10.0 mi NNW 17.3 mph 26.5 mph N/A   Scattered Clouds
6:35 AM 46.4 °F 38.1 °F 28.4 °F 50% 30.00 in 10.0 mi NW 24.2 mph 36.8 mph N/A   Clear
6:55 AM 44.6 °F 38.8 °F 28.4 °F 53% 30.01 in 10.0 mi NW 11.5 mph 21.9 mph N/A   Clear
7:15 AM 44.6 °F 39.7 °F 30.2 °F 57% 30.02 in 10.0 mi NW 9.2 mph - N/A   Clear
7:35 AM 44.6 °F 40.2 °F 30.2 °F 57% 30.03 in 10.0 mi NW 8.1 mph - N/A   Clear
7:55 AM 44.6 °F 37.4 °F 30.2 °F 57% 30.04 in 10.0 mi NW 16.1 mph 23.0 mph N/A   Clear
8:15 AM 46.4 °F 40.1 °F 30.2 °F 53% 30.04 in 10.0 mi NW 15.0 mph 25.3 mph N/A   Clear
8:35 AM 46.4 °F 39.2 °F 32.0 °F 57% 30.04 in 10.0 mi NW 18.4 mph 25.3 mph N/A   Clear
8:55 AM 48.2 °F - 32.0 °F 54% 30.05 in 10.0 mi NW 25.3 mph 28.8 mph N/A   Clear
9:15 AM 48.2 °F - 32.0 °F 54% 30.06 in 10.0 mi NW 18.4 mph 28.8 mph N/A   Clear
9:35 AM 50.0 °F - 32.0 °F 50% 30.07 in 10.0 mi WNW 18.4 mph 29.9 mph N/A   Clear
9:55 AM 50.0 °F - 32.0 °F 50% 30.07 in 10.0 mi NW 16.1 mph 25.3 mph N/A   Scattered Clouds
10:15 AM 51.8 °F - 32.0 °F 47% 30.09 in 10.0 mi WNW 18.4 mph 26.5 mph N/A   Scattered Clouds
10:35 AM 51.8 °F - 32.0 °F 47% 30.09 in 10.0 mi WNW 18.4 mph 25.3 mph N/A   Clear
10:55 AM 51.8 °F - 32.0 °F 47% 30.10 in 10.0 mi NW 17.3 mph 28.8 mph N/A   Scattered Clouds
11:15 AM 53.6 °F - 32.0 °F 44% 30.10 in 10.0 mi WNW 6.9 mph 24.2 mph N/A   Scattered Clouds
11:35 AM 53.6 °F - 32.0 °F 44% 30.10 in 10.0 mi NW 18.4 mph 26.5 mph N/A   Scattered Clouds
11:55 AM 53.6 °F - 32.0 °F 44% 30.10 in 10.0 mi NNW 20.7 mph 24.2 mph N/A   Clear
12:15 PM 53.6 °F - 32.0 °F 44% 30.11 in 10.0 mi WNW 11.5 mph 27.6 mph N/A   Clear
12:35 PM 55.4 °F - 32.0 °F 41% 30.10 in 10.0 mi West 15.0 mph 20.7 mph N/A   Scattered Clouds
12:55 PM 55.4 °F - 33.8 °F 44% 30.10 in 10.0 mi NNW 9.2 mph 20.7 mph N/A   Scattered Clouds
1:15 PM 55.4 °F - 33.8 °F 44% 30.09 in 10.0 mi West 9.2 mph 19.6 mph N/A   Scattered Clouds
1:35 PM 57.2 °F - 32.0 °F 38% 30.09 in 10.0 mi West 15.0 mph 24.2 mph N/A   Scattered Clouds
1:55 PM 57.2 °F - 32.0 °F 38% 30.09 in 10.0 mi NW 13.8 mph 24.2 mph N/A   Clear
2:15 PM 57.2 °F - 32.0 °F 38% 30.09 in 10.0 mi NW 19.6 mph 28.8 mph N/A   Scattered Clouds
2:35 PM 59.0 °F - 32.0 °F 36% 30.10 in 10.0 mi NW 16.1 mph 20.7 mph N/A   Clear
2:55 PM 59.0 °F - 32.0 °F 36% 30.10 in 10.0 mi West 15.0 mph 24.2 mph N/A   Scattered Clouds
3:15 PM 59.0 °F - 32.0 °F 36% 30.11 in 10.0 mi NW 16.1 mph 26.5 mph N/A   Clear
3:35 PM 59.0 °F - 32.0 °F 36% 30.10 in 10.0 mi NW 20.7 mph 27.6 mph N/A   Scattered Clouds
3:55 PM 59.0 °F - 32.0 °F 36% 30.11 in 10.0 mi NW 18.4 mph 25.3 mph N/A   Scattered Clouds
4:15 PM 59.0 °F - 32.0 °F 36% 30.11 in 10.0 mi West 15.0 mph 25.3 mph N/A   Scattered Clouds
4:35 PM 59.0 °F - 32.0 °F 36% 30.11 in 10.0 mi NNW 19.6 mph 26.5 mph N/A   Scattered Clouds
4:55 PM 59.0 °F - 32.0 °F 36% 30.12 in 10.0 mi NW 11.5 mph 23.0 mph N/A   Scattered Clouds
5:15 PM 59.0 °F - 32.0 °F 36% 30.13 in 10.0 mi WNW 15.0 mph 21.9 mph N/A   Clear
5:35 PM 59.0 °F - 30.2 °F 34% 30.14 in 10.0 mi WNW 12.7 mph 25.3 mph N/A   Clear
5:55 PM 59.0 °F - 32.0 °F 36% 30.15 in 10.0 mi NW 11.5 mph 20.7 mph N/A   Clear
6:15 PM 59.0 °F - 30.2 °F 34% 30.15 in 10.0 mi NNW 16.1 mph 19.6 mph N/A   Scattered Clouds
6:35 PM 57.2 °F - 30.2 °F 36% 30.16 in 10.0 mi NW 10.4 mph - N/A   Scattered Clouds
6:55 PM 57.2 °F - 30.2 °F 36% 30.18 in 10.0 mi NNW 10.4 mph 19.6 mph N/A   Clear
7:15 PM 55.4 °F - 30.2 °F 38% 30.18 in 10.0 mi NNW 12.7 mph 18.4 mph N/A   Clear
7:35 PM 55.4 °F - 30.2 °F 38% 30.20 in 10.0 mi North 5.8 mph 17.3 mph N/A   Clear
7:55 PM 53.6 °F - 30.2 °F 41% 30.21 in 10.0 mi North 8.1 mph - N/A   Clear
8:15 PM 53.6 °F - 30.2 °F 41% 30.22 in 10.0 mi North 11.5 mph - N/A   Clear
8:35 PM 51.8 °F - 30.2 °F 44% 30.24 in 10.0 mi North 6.9 mph - N/A   Clear
8:55 PM 51.8 °F - 30.2 °F 44% 30.27 in 10.0 mi North 10.4 mph - N/A   Clear
9:15 PM 51.8 °F - 30.2 °F 44% 30.28 in 10.0 mi North 9.2 mph - N/A   Clear
9:35 PM 50.0 °F - 30.2 °F 47% 30.30 in 10.0 mi North 8.1 mph - N/A   Clear
9:55 PM 50.0 °F - 28.4 °F 43% 30.31 in 10.0 mi North 6.9 mph - N/A   Clear
10:15 PM 50.0 °F - 28.4 °F 43% 30.32 in 10.0 mi North 4.6 mph - N/A   Clear
10:55 PM 48.2 °F - 28.4 °F 46% 30.34 in 10.0 mi North 8.1 mph - N/A   Clear
11:15 PM 46.4 °F 43.5 °F 30.2 °F 53% 30.35 in 10.0 mi NNE 5.8 mph - N/A   Clear
11:35 PM 46.4 °F 41.9 °F 30.2 °F 53% 30.35 in 10.0 mi North 9.2 mph - N/A   Clear
11:55 PM 46.4 °F 41.5 °F 30.2 °F 53% 30.36 in 10.0 mi North 10.4 mph 16.1 mph N/A   Clear