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Thursday, April 11, 2013

  Actual Average (KIAD) Record (KIAD)
Temperature  
Mean Temperature 73 °F 53 °F  
Max Temperature 87 °F 65 °F 87 °F (1977)
Min Temperature 59 °F 41 °F 25 °F (1970)
Degree Days  
Heating Degree Days 0 12  
Month to date heating degree days 154  
Since 1 July heating degree days 4391  
Cooling Degree Days 8 0  
Month to date cooling degree days 0  
Year to date cooling degree days 3  
Growing Degree Days 23 (Base 50)    
Moisture  
Dew Point 57 °F    
Average Humidity 64    
Maximum Humidity 94    
Minimum Humidity 35    
Precipitation  
Precipitation 0.00 in 0.12 in 0.74 in (2009)
Month to date precipitation 1.33  
Year to date precipitation 10.13  
Snow  
Snow 0.00 in 0.00 in T in (1986)
Month to date snowfall 0.2  
Since 1 July snowfall 21.9  
Snow Depth -    
Sea Level Pressure  
Sea Level Pressure 29.83 in    
Wind  
Wind Speed 6 mph (ESE)    
Max Wind Speed 18 mph    
Max Gust Speed 29 mph    
Visibility 10 miles    
Events      
T = Trace of Precipitation, MM = Missing Value Source: NWS Daily Summary

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Astronomy

Apr. 11, 2013 Rise Set
Actual Time 6:39 AM EDT 7:43 PM EDT
Civil Twilight 6:11 AM EDT 8:11 PM EDT
Nautical Twilight 5:39 AM EDT 8:44 PM EDT
Astronomical Twilight 5:05 AM EDT 9:18 PM EDT
Moon 7:10 AM EDT (4/11) 9:15 PM EDT (4/11)
Length of Visible Light 13h 59m
Length of Day
13h 04m
New Moon, 2% of the Moon is Illuminated
Apr 11
New Moon
Apr 18
First Quarter
Apr 25
Full
May 2
Last Quarter
May 9
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 78.8 °F - 55.4 °F 44% 29.85 in 10.0 mi West 5.8 mph - N/A   Scattered Clouds
12:35 AM 75.2 °F - 57.2 °F 53% 29.90 in 10.0 mi North 18.4 mph 28.8 mph N/A   Mostly Cloudy
12:55 AM 73.4 °F - 57.2 °F 57% 29.90 in 10.0 mi NNE 11.5 mph 19.6 mph N/A   Scattered Clouds
1:15 AM 71.6 °F - 57.2 °F 60% 29.89 in 10.0 mi NNE 10.4 mph - N/A   Scattered Clouds
1:35 AM 71.6 °F - 57.2 °F 60% 29.88 in 10.0 mi North - - N/A   Clear
1:55 AM 69.8 °F - 57.2 °F 64% 29.88 in 10.0 mi Calm Calm - N/A   Clear
2:15 AM 69.8 °F - 57.2 °F 64% 29.87 in 10.0 mi Calm Calm - N/A   Clear
2:35 AM 64.4 °F - 55.4 °F 73% 29.88 in 10.0 mi North - - N/A   Clear
2:55 AM 66.2 °F - 57.2 °F 73% 29.88 in 10.0 mi North - - N/A   Clear
3:15 AM 66.2 °F - 57.2 °F 73% 29.87 in 10.0 mi North - - N/A   Clear
3:35 AM 62.6 °F - 55.4 °F 77% 29.87 in 10.0 mi North - - N/A   Clear
3:55 AM 62.6 °F - 55.4 °F 77% 29.86 in 10.0 mi North - - N/A   Clear
4:15 AM 62.6 °F - 55.4 °F 77% 29.85 in 10.0 mi North - - N/A   Clear
4:35 AM 59.0 °F - 55.4 °F 88% 29.86 in 10.0 mi North - - N/A   Clear
4:55 AM 60.8 °F - 57.2 °F 88% 29.87 in 10.0 mi West 3.5 mph - N/A   Clear
5:15 AM 59.0 °F - 55.4 °F 88% 29.88 in 10.0 mi WNW 3.5 mph - N/A   Clear
5:35 AM 59.0 °F - 55.4 °F 88% 29.88 in 10.0 mi North - - N/A   Clear
5:55 AM 59.0 °F - 55.4 °F 88% 29.88 in 10.0 mi Calm Calm - N/A   Clear
6:15 AM 59.0 °F - 55.4 °F 88% 29.89 in 10.0 mi North 3.5 mph - N/A   Clear
6:35 AM 59.0 °F - 55.4 °F 88% 29.90 in 10.0 mi Calm Calm - N/A   Clear
6:55 AM 59.0 °F - 55.4 °F 88% 29.89 in 10.0 mi Calm Calm - N/A   Clear
7:15 AM 59.0 °F - 55.4 °F 88% 29.89 in 10.0 mi North - - N/A   Clear
7:35 AM 59.0 °F - 55.4 °F 88% 29.89 in 10.0 mi North - - N/A   Clear
7:55 AM 60.8 °F - 55.4 °F 82% 29.89 in 10.0 mi Calm Calm - N/A   Clear
8:15 AM 60.8 °F - 59.0 °F 94% 29.89 in 10.0 mi North - - N/A   Clear
8:35 AM 64.4 °F - 59.0 °F 83% 29.89 in 10.0 mi North - - N/A   Clear
8:55 AM 68.0 °F - 59.0 °F 73% 29.89 in 10.0 mi Calm Calm - N/A   Clear
9:15 AM 69.8 °F - 59.0 °F 68% 29.90 in 10.0 mi Calm Calm - N/A   Clear
9:35 AM 71.6 °F - 59.0 °F 64% 29.89 in 10.0 mi North - - N/A   Unknown
9:55 AM 73.4 °F - 60.8 °F 65% 29.89 in - North - - N/A   Unknown
10:15 AM 75.2 °F - 60.8 °F 61% 29.89 in 10.0 mi Calm Calm - N/A   Clear
10:35 AM 75.2 °F - 59.0 °F 57% 29.89 in 10.0 mi SSE 5.8 mph - N/A   Clear
10:55 AM 78.8 °F - 60.8 °F 54% 29.88 in 10.0 mi North - - N/A   Clear
11:15 AM 78.8 °F - 60.8 °F 54% 29.88 in 10.0 mi Calm Calm - N/A   Clear
11:35 AM 78.8 °F - 59.0 °F 51% 29.88 in 10.0 mi North - - N/A   Clear
11:55 AM 80.6 °F 81.5 °F 60.8 °F 51% 29.87 in 10.0 mi SE 3.5 mph - N/A   Clear
12:15 PM 80.6 °F 81.5 °F 60.8 °F 51% 29.85 in 10.0 mi ESE 3.5 mph - N/A   Clear
12:35 PM 82.4 °F 82.5 °F 59.0 °F 45% 29.85 in 10.0 mi North - - N/A   Clear
1:15 PM 84.2 °F 83.8 °F 59.0 °F 42% 29.83 in 10.0 mi North - - N/A   Clear
1:35 PM 84.2 °F 83.5 °F 57.2 °F 40% 29.82 in 10.0 mi SSE 8.1 mph - N/A   Clear
1:55 PM 86.0 °F 85.4 °F 59.0 °F 40% 29.81 in 10.0 mi North - - N/A   Clear
2:15 PM 86.0 °F 85.4 °F 59.0 °F 40% 29.80 in 10.0 mi North - - N/A   Clear
2:35 PM 87.8 °F 87.1 °F 59.0 °F 38% 29.79 in 10.0 mi SW 8.1 mph - N/A   Clear
2:55 PM 86.0 °F 85.4 °F 59.0 °F 40% 29.79 in 10.0 mi South 9.2 mph - N/A   Clear
3:15 PM 86.0 °F 85.4 °F 59.0 °F 40% 29.77 in 10.0 mi Calm Calm - N/A   Clear
3:35 PM 86.0 °F 84.9 °F 57.2 °F 37% 29.77 in 10.0 mi South 9.2 mph - N/A   Clear
3:55 PM 86.0 °F 84.9 °F 57.2 °F 37% 29.76 in 10.0 mi North - - N/A   Clear
4:15 PM 86.0 °F 85.4 °F 59.0 °F 40% 29.75 in 10.0 mi North - - N/A   Clear
4:35 PM 87.8 °F 87.1 °F 59.0 °F 38% 29.74 in 10.0 mi North - - N/A   Scattered Clouds
4:55 PM 86.0 °F 86.1 °F 60.8 °F 43% 29.74 in 10.0 mi SE 8.1 mph - N/A   Scattered Clouds
5:15 PM 86.0 °F 86.1 °F 60.8 °F 43% 29.74 in 10.0 mi North - - N/A   Scattered Clouds
5:35 PM 86.0 °F 86.1 °F 60.8 °F 43% 29.74 in 10.0 mi SE 6.9 mph - N/A   Clear
5:55 PM 86.0 °F 84.9 °F 57.2 °F 37% 29.74 in 10.0 mi North - - N/A   Clear
6:15 PM 84.2 °F 82.8 °F 53.6 °F 35% 29.74 in 10.0 mi North - - N/A   Clear
6:35 PM 82.4 °F 81.4 °F 53.6 °F 37% 29.74 in 10.0 mi North - - N/A   Clear
6:55 PM 82.4 °F 81.4 °F 53.6 °F 37% 29.74 in 10.0 mi North - - N/A   Clear
7:15 PM 80.6 °F 80.3 °F 53.6 °F 39% 29.74 in 10.0 mi North - - N/A   Clear
7:35 PM 80.6 °F 80.3 °F 53.6 °F 39% 29.74 in 10.0 mi North - - N/A   Clear
7:55 PM 80.6 °F 80.3 °F 53.6 °F 39% 29.74 in 10.0 mi North - - N/A   Clear
8:15 PM 73.4 °F - 60.8 °F 65% 29.76 in 10.0 mi East 17.3 mph - N/A   Scattered Clouds
8:35 PM 69.8 °F - 60.8 °F 73% 29.78 in 10.0 mi ESE 15.0 mph 24.2 mph N/A   Scattered Clouds
8:55 PM 64.4 °F - 59.0 °F 83% 29.79 in 10.0 mi East 16.1 mph 21.9 mph N/A   Mostly Cloudy
9:15 PM 62.6 °F - 59.0 °F 88% 29.80 in 10.0 mi East 15.0 mph 24.2 mph N/A   Mostly Cloudy
9:35 PM 60.8 °F - 57.2 °F 88% 29.82 in 10.0 mi ESE 11.5 mph 18.4 mph N/A   Scattered Clouds
9:55 PM 60.8 °F - 55.4 °F 82% 29.82 in 10.0 mi East 8.1 mph 18.4 mph N/A   Scattered Clouds
10:15 PM 59.0 °F - 55.4 °F 88% 29.81 in 10.0 mi East 6.9 mph - N/A   Clear
10:35 PM 59.0 °F - 55.4 °F 88% 29.81 in 10.0 mi North - - N/A   Clear
10:55 PM 59.0 °F - 55.4 °F 88% 29.80 in 10.0 mi East 8.1 mph - N/A   Clear
11:15 PM 59.0 °F - 55.4 °F 88% 29.81 in 10.0 mi East 8.1 mph - N/A   Mostly Cloudy
11:35 PM 59.0 °F - 55.4 °F 88% 29.82 in 10.0 mi North - - N/A   Overcast
11:55 PM 59.0 °F - 55.4 °F 88% 29.83 in 10.0 mi ENE 6.9 mph - N/A   Overcast