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Friday, February 1, 2013

  Actual Average (KIAD) Record (KIAD)
Temperature  
Mean Temperature 26 °F 34 °F  
Max Temperature 32 °F 44 °F 75 °F (2002)
Min Temperature 19 °F 24 °F 2 °F (1965)
Degree Days  
Heating Degree Days 40 31  
Month to date heating degree days 31  
Since 1 July heating degree days 2815  
Cooling Degree Days 0 0  
Month to date cooling degree days 0  
Year to date cooling degree days 0  
Moisture  
Dew Point 15 °F    
Average Humidity 61    
Maximum Humidity 100    
Minimum Humidity 47    
Precipitation  
Precipitation 0.00 in 0.10 in 1.44 in (2008)
Month to date precipitation 0.10  
Year to date precipitation 2.78  
Snow  
Snow 0.00 in 0.30 in 1.50 in (1966)
Month to date snowfall 0.3  
Since 1 July snowfall 11.6  
Snow Depth -    
Sea Level Pressure  
Sea Level Pressure 30.11 in    
Wind  
Wind Speed 10 mph (NW)    
Max Wind Speed 26 mph    
Max Gust Speed 40 mph    
Visibility 9 miles    
Events Snow    
T = Trace of Precipitation, MM = Missing Value Source: NWS Daily Summary

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Date:

Astronomy

Feb. 01, 2013 Rise Set
Actual Time 7:16 AM EST 5:31 PM EST
Civil Twilight 6:48 AM EST 5:59 PM EST
Nautical Twilight 6:16 AM EST 6:31 PM EST
Astronomical Twilight 5:45 AM EST 7:03 PM EST
Moon 11:33 PM EST (2/1) 9:51 AM EST (2/1)
Length of Visible Light 11h 11m
Length of Day
10h 15m
Waning Gibbous, 70% of the Moon is Illuminated
Feb 1
Waning Gibbous
Feb 3
Last Quarter
Feb 10
New
Feb 17
First Quarter
Feb 25
Full

Hourly Weather History & Observations

Time (EST) Temp. Windchill Dew Point Humidity Pressure Visibility Wind Dir Wind Speed Gust Speed Precip Events Conditions
12:15 AM 32.0 °F 28.7 °F 17.6 °F 55% 29.88 in 10.0 mi WSW 3.5 mph - N/A   Mostly Cloudy
12:35 AM 30.2 °F - 17.6 °F 60% 29.88 in 10.0 mi Calm Calm - N/A   Clear
1:15 AM 28.4 °F 21.2 °F 21.2 °F 74% 29.88 in 10.0 mi South 6.9 mph - N/A   Mostly Cloudy
1:35 AM 30.2 °F 25.4 °F 21.2 °F 69% 29.88 in 10.0 mi SSW 4.6 mph - N/A   Overcast
1:55 AM 30.2 °F 24.3 °F 21.2 °F 69% 29.88 in 10.0 mi SSW 5.8 mph - N/A   Overcast
2:15 AM 30.2 °F 26.7 °F 21.2 °F 69% 29.87 in 10.0 mi South 3.5 mph - N/A   Overcast
2:35 AM 30.2 °F - 21.2 °F 69% 29.85 in 10.0 mi Calm Calm - N/A   Overcast
2:55 AM 32.0 °F - 21.2 °F 64% 29.85 in 10.0 mi North - - N/A   Overcast
3:15 AM 32.0 °F - 21.2 °F 64% 29.84 in 10.0 mi Calm Calm - N/A   Overcast
3:35 AM 32.0 °F - 21.2 °F 64% 29.83 in 10.0 mi Calm Calm - N/A   Overcast
3:55 AM 32.0 °F - 21.2 °F 64% 29.82 in 10.0 mi Calm Calm - N/A   Overcast
4:15 AM 32.0 °F - 21.2 °F 64% 29.83 in 10.0 mi Calm Calm - N/A   Overcast
4:35 AM 32.0 °F - 23.0 °F 69% 29.82 in 10.0 mi Calm Calm - N/A   Overcast
5:15 AM 32.0 °F 25.6 °F 21.2 °F 64% 29.84 in 10.0 mi North 6.9 mph - N/A   Overcast
5:35 AM 32.0 °F 22.1 °F 26.6 °F 80% 29.86 in 5.0 mi NNW 13.8 mph 18.4 mph N/A Snow Light Snow
5:55 AM 30.2 °F 20.2 °F 30.2 °F 100% 29.88 in 1.2 mi NNW 12.7 mph - N/A Snow Light Snow
6:15 AM 30.2 °F 17.4 °F 30.2 °F 100% 29.90 in 0.8 mi NNW 20.7 mph 26.5 mph N/A Snow Snow
6:35 AM 28.4 °F 18.0 °F 28.4 °F 100% 29.91 in 4.0 mi NNW 12.7 mph 19.6 mph N/A Snow Light Snow
7:15 AM 28.4 °F 17.5 °F 24.8 °F 86% 29.93 in 10.0 mi NW 13.8 mph 17.3 mph N/A   Overcast
7:35 AM 28.4 °F 18.5 °F 24.8 °F 86% 29.94 in 10.0 mi NW 11.5 mph 18.4 mph N/A   Overcast
7:55 AM 28.4 °F 17.0 °F 24.8 °F 86% 29.97 in 1.8 mi NNW 15.0 mph 21.9 mph N/A Snow Light Snow
8:15 AM 26.6 °F 15.7 °F 23.0 °F 86% 29.99 in 4.0 mi NW 12.7 mph 25.3 mph N/A Snow Light Snow
8:35 AM 28.4 °F 16.6 °F 19.4 °F 69% 30.01 in 4.0 mi NW 16.1 mph 31.1 mph N/A   Haze
9:15 AM 26.6 °F 12.7 °F 14.0 °F 59% 30.05 in 2.5 mi NW 20.7 mph 40.3 mph N/A   Haze
9:35 AM 26.6 °F 12.0 °F 12.2 °F 55% 30.05 in 5.0 mi WNW 23.0 mph 38.0 mph N/A   Haze
9:55 AM 26.6 °F 11.1 °F 12.2 °F 55% 30.07 in 10.0 mi NW 26.5 mph 38.0 mph N/A   Clear
10:15 AM 28.4 °F 16.2 °F 12.2 °F 51% 30.09 in 10.0 mi NW 17.3 mph 33.4 mph N/A   Clear
10:35 AM 26.6 °F 14.3 °F 12.2 °F 55% 30.10 in 10.0 mi NW 16.1 mph 29.9 mph N/A   Scattered Clouds
11:15 AM 26.6 °F 13.4 °F 10.4 °F 51% 30.12 in 10.0 mi NW 18.4 mph 34.5 mph N/A   Mostly Cloudy
11:35 AM 26.6 °F 12.4 °F 12.2 °F 55% 30.13 in 10.0 mi NW 21.9 mph 31.1 mph N/A   Overcast
11:55 AM 28.4 °F 14.1 °F 12.2 °F 51% 30.13 in 10.0 mi NW 24.2 mph 35.7 mph N/A   Overcast
12:15 PM 28.4 °F 14.1 °F 14.0 °F 55% 30.14 in 10.0 mi WNW 24.2 mph 35.7 mph N/A   Mostly Cloudy
12:35 PM 28.4 °F 15.8 °F 12.2 °F 51% 30.15 in 10.0 mi WNW 18.4 mph 34.5 mph N/A   Scattered Clouds
1:15 PM 28.4 °F 16.6 °F 12.2 °F 51% 30.16 in 10.0 mi NW 16.1 mph 26.5 mph N/A   Overcast
1:35 PM 28.4 °F 14.1 °F 10.4 °F 47% 30.16 in 10.0 mi NW 24.2 mph 29.9 mph N/A   Overcast
2:15 PM 28.4 °F 16.6 °F 10.4 °F 47% 30.17 in 10.0 mi NW 16.1 mph 31.1 mph N/A   Mostly Cloudy
2:35 PM 28.4 °F 16.6 °F 10.4 °F 47% 30.18 in 10.0 mi NW 16.1 mph 32.2 mph N/A   Mostly Cloudy
2:55 PM 28.4 °F 14.1 °F 10.4 °F 47% 30.19 in 10.0 mi NW 24.2 mph 31.1 mph N/A   Scattered Clouds
3:15 PM 28.4 °F 15.8 °F 10.4 °F 47% 30.20 in 10.0 mi NW 18.4 mph 29.9 mph N/A   Scattered Clouds
3:35 PM 28.4 °F 15.8 °F 10.4 °F 47% 30.21 in 10.0 mi WNW 18.4 mph 33.4 mph N/A   Overcast
3:55 PM 28.4 °F 16.2 °F 10.4 °F 47% 30.22 in 10.0 mi WNW 17.3 mph 32.2 mph N/A   Overcast
4:15 PM 28.4 °F 19.1 °F 10.4 °F 47% 30.23 in 10.0 mi NNW 10.4 mph 23.0 mph N/A   Overcast
4:35 PM 26.6 °F 15.2 °F 8.6 °F 47% 30.25 in 10.0 mi WNW 13.8 mph 23.0 mph N/A   Mostly Cloudy
5:15 PM 26.6 °F 15.7 °F 8.6 °F 47% 30.26 in 10.0 mi WNW 12.7 mph 21.9 mph N/A   Overcast
5:35 PM 24.8 °F 11.9 °F 8.6 °F 50% 30.27 in 10.0 mi WNW 16.1 mph 25.3 mph N/A   Mostly Cloudy
6:15 PM 23.0 °F 12.4 °F 8.6 °F 54% 30.28 in 10.0 mi WNW 10.4 mph 21.9 mph N/A   Clear
6:35 PM 23.0 °F 10.1 °F 8.6 °F 54% 30.31 in 10.0 mi NW 15.0 mph 20.7 mph N/A   Clear
6:55 PM 23.0 °F 10.6 °F 8.6 °F 54% 30.31 in 10.0 mi NNW 13.8 mph 19.6 mph N/A   Clear
7:15 PM 23.0 °F 13.9 °F 8.6 °F 54% 30.32 in 10.0 mi NW 8.1 mph 19.6 mph N/A   Clear
7:35 PM 23.0 °F 10.1 °F 8.6 °F 54% 30.33 in 10.0 mi West 15.0 mph 23.0 mph N/A   Clear
7:55 PM 23.0 °F 10.1 °F 8.6 °F 54% 30.33 in 10.0 mi WNW 15.0 mph - N/A   Clear
8:15 PM 21.2 °F 13.6 °F 8.6 °F 58% 30.34 in 10.0 mi West 5.8 mph - N/A   Clear
8:35 PM 21.2 °F 10.1 °F 8.6 °F 58% 30.34 in 10.0 mi WNW 10.4 mph 18.4 mph N/A   Clear
8:55 PM 21.2 °F 10.1 °F 8.6 °F 58% 30.35 in 10.0 mi WNW 10.4 mph - N/A   Clear
9:15 PM 21.2 °F 11.7 °F 8.6 °F 58% 30.35 in 10.0 mi WNW 8.1 mph 17.3 mph N/A   Clear
9:35 PM 21.2 °F 12.6 °F 8.6 °F 58% 30.36 in 10.0 mi NW 6.9 mph - N/A   Clear
9:55 PM 21.2 °F 8.9 °F 8.6 °F 58% 30.36 in 10.0 mi NW 12.7 mph 19.6 mph N/A   Clear
10:15 PM 21.2 °F 10.9 °F 8.6 °F 58% 30.38 in 10.0 mi WNW 9.2 mph - N/A   Clear
10:35 PM 19.4 °F 10.4 °F 8.6 °F 63% 30.38 in 10.0 mi WNW 6.9 mph - N/A   Clear
10:55 PM 19.4 °F 7.9 °F 8.6 °F 63% 30.38 in 10.0 mi WNW 10.4 mph 17.3 mph N/A   Clear
11:15 PM 19.4 °F 9.5 °F 8.6 °F 63% 30.39 in 10.0 mi West 8.1 mph - N/A   Clear
11:35 PM 19.4 °F 7.9 °F 8.6 °F 63% 30.39 in 10.0 mi WNW 10.4 mph 16.1 mph N/A   Clear
11:55 PM 19.4 °F 7.9 °F 8.6 °F 63% 30.39 in 10.0 mi NW 10.4 mph 20.7 mph N/A   Clear