Weather History for KIAD - March, 2013

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Sunday, March 17, 2013

  Actual Average Record
Temperature  
Mean Temperature 35 °F 44 °F  
Max Temperature 40 °F 56 °F 77 °F (1963)
Min Temperature 30 °F 33 °F 16 °F (1970)
Degree Days  
Heating Degree Days 30 21  
Month to date heating degree days 411 395  
Since 1 July heating degree days 3775 3985  
Cooling Degree Days 0 0  
Month to date cooling degree days 0 0  
Year to date cooling degree days 0 0  
Moisture  
Dew Point 27 °F    
Average Humidity 70    
Maximum Humidity 92    
Minimum Humidity 48    
Precipitation  
Precipitation 0.00 in 0.11 in 1.14 in (1993)
Month to date precipitation 2.14 1.70  
Year to date precipitation 7.47 7.12  
Snow  
Snow 0.00 in 0.10 in 4.50 in (2014)
Month to date snowfall 3.3 2.0  
Since 1 July snowfall 8.6 20.9  
Snow Depth 0.00 in    
Sea Level Pressure  
Sea Level Pressure 30.12 in    
Wind  
Wind Speed 6 mph (North)    
Max Wind Speed 14 mph    
Max Gust Speed 16 mph    
Visibility 8 miles    
Events      
T = Trace of Precipitation, MM = Missing Value Source: NWS Daily Summary

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Astronomy

Mar. 17, 2013 Rise Set
Actual Time 7:17 AM EDT 7:19 PM EDT
Civil Twilight 6:51 AM EDT 7:45 PM EDT
Nautical Twilight 6:20 AM EDT 8:16 PM EDT
Astronomical Twilight 5:48 AM EDT 8:48 PM EDT
Moon 10:31 AM EDT (3/17) 12:22 AM EDT (3/17)
Length of Visible Light 12h 54m
Length of Day
12h 01m
Waxing Crescent, 31% of the Moon is Illuminated
Mar 17
Waxing Crescent
Mar 19
First Quarter
Mar 27
Full
Apr 3
Last Quarter
Apr 10
New

Hourly Weather History & Observations

Time (EDT) Temp. Windchill Dew Point Humidity Pressure Visibility Wind Dir Wind Speed Gust Speed Precip Events Conditions
12:52 AM 37.0 °F 29.3 °F 32.0 °F 82% 29.93 in 7.0 mi North 11.5 mph - N/A   Mostly Cloudy
1:52 AM 36.0 °F 28.5 °F 30.9 °F 82% 29.93 in 7.0 mi North 10.4 mph - N/A   Partly Cloudy
2:52 AM 36.0 °F 29.6 °F 30.9 °F 82% 29.96 in 6.0 mi North 8.1 mph - N/A   Haze
3:52 AM 35.1 °F 29.3 °F 30.0 °F 82% 29.97 in 7.0 mi North 6.9 mph - N/A   Mostly Cloudy
4:52 AM 33.1 °F - 30.0 °F 89% 29.99 in 6.0 mi Calm Calm - N/A   Scattered Clouds
5:52 AM 30.9 °F - 28.9 °F 92% 30.02 in 4.0 mi Calm Calm - N/A   Mostly Cloudy
6:52 AM 32.0 °F - 30.0 °F 92% 30.05 in 4.0 mi Calm Calm - N/A   Mostly Cloudy
7:52 AM 33.1 °F 30.0 °F 30.0 °F 89% 30.08 in 4.0 mi WSW 3.5 mph - N/A   Overcast
8:52 AM 36.0 °F 33.3 °F 30.9 °F 82% 30.11 in 7.0 mi North 3.5 mph - N/A   Overcast
9:52 AM 37.9 °F 34.4 °F 30.9 °F 76% 30.14 in 10.0 mi Variable 4.6 mph - N/A   Overcast
10:52 AM 39.9 °F 34.5 °F 28.9 °F 65% 30.16 in 10.0 mi NNW 8.1 mph - N/A   Overcast
11:19 AM 39.2 °F 33.0 °F 28.4 °F 65% 30.15 in 10.0 mi North 9.2 mph - N/A   Overcast
11:52 AM 39.9 °F 32.9 °F 28.0 °F 63% 30.17 in 10.0 mi North 11.5 mph - N/A   Overcast
12:52 PM 39.0 °F 32.3 °F 28.9 °F 67% 30.18 in 10.0 mi NNE 10.4 mph - N/A   Overcast
1:52 PM 37.9 °F 30.9 °F 27.0 °F 65% 30.17 in 10.0 mi North 10.4 mph - N/A   Overcast
2:52 PM 39.0 °F 33.4 °F 25.0 °F 57% 30.17 in 10.0 mi North 8.1 mph - N/A   Overcast
3:52 PM 39.0 °F 34.0 °F 23.0 °F 53% 30.18 in 10.0 mi NNW 6.9 mph - N/A   Overcast
4:52 PM 39.0 °F 34.8 °F 21.0 °F 49% 30.18 in 10.0 mi Variable 5.8 mph - N/A   Overcast
5:52 PM 39.0 °F 35.7 °F 21.0 °F 49% 30.19 in 10.0 mi Variable 4.6 mph - N/A   Overcast
6:52 PM 39.0 °F 35.7 °F 21.9 °F 50% 30.21 in 10.0 mi Variable 4.6 mph - N/A   Overcast
7:52 PM 39.0 °F 36.8 °F 23.0 °F 53% 30.23 in 10.0 mi NE 3.5 mph - N/A   Overcast
8:52 PM 39.0 °F 36.8 °F 24.1 °F 55% 30.24 in 10.0 mi NE 3.5 mph - N/A   Overcast
9:52 PM 39.0 °F 36.8 °F 25.0 °F 57% 30.25 in 10.0 mi NNE 3.5 mph - N/A   Overcast
10:52 PM 39.0 °F 35.7 °F 25.0 °F 57% 30.26 in 10.0 mi NE 4.6 mph - N/A   Overcast
11:52 PM 37.0 °F 32.4 °F 30.0 °F 76% 30.28 in 10.0 mi South 5.8 mph - N/A   Overcast