Weather History for KIAD - October, 2012

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Saturday, October 20, 2012

  Actual Average Record
Temperature  
Mean Temperature 55 °F 54 °F  
Max Temperature 67 °F 67 °F 83 °F (1969)
Min Temperature 43 °F 42 °F 20 °F (1972)
Degree Days  
Heating Degree Days 10 11  
Month to date heating degree days 166 161  
Since 1 July heating degree days 217 219  
Cooling Degree Days 0 0  
Month to date cooling degree days 14 16  
Year to date cooling degree days 1434 1173  
Growing Degree Days 4 (Base 50)    
Moisture  
Dew Point 41 °F    
Average Humidity 69    
Maximum Humidity 100    
Minimum Humidity 37    
Precipitation  
Precipitation 0.00 in 0.10 in 1.27 in (1976)
Month to date precipitation 3.22 2.08  
Year to date precipitation 25.98 34.00  
Snow  
Snow 0.00 in 0.00 in T in (1974)
Month to date snowfall 0.0 0.0  
Since 1 July snowfall 0.0 0.0  
Snow Depth 0.00 in    
Sea Level Pressure  
Sea Level Pressure 29.79 in    
Wind  
Wind Speed 4 mph (WNW)    
Max Wind Speed 16 mph    
Max Gust Speed 22 mph    
Visibility 10 miles    
Events      
T = Trace of Precipitation, MM = Missing Value Source: NWS Daily Summary

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Astronomy

Oct. 20, 2012 Rise Set
Actual Time 7:24 AM EDT 6:23 PM EDT
Civil Twilight 6:57 AM EDT 6:50 PM EDT
Nautical Twilight 6:26 AM EDT 7:21 PM EDT
Astronomical Twilight 5:55 AM EDT 7:52 PM EDT
Moon 12:57 PM EDT (10/20) 11:08 PM EDT (10/20)
Length of Visible Light 11h 52m
Length of Day
10h 58m
Waxing Crescent, 34% of the Moon is Illuminated
Oct 20
Waxing Crescent
Oct 21
First Quarter
Oct 29
Full
Nov 6
Last Quarter
Nov 13
New

Hourly Weather History & Observations

Time (EDT) Temp. Dew Point Humidity Pressure Visibility Wind Dir Wind Speed Gust Speed Precip Events Conditions
12:52 AM 53.1 °F 46.0 °F 77% 29.68 in 10.0 mi South 5.8 mph - N/A   Clear
1:52 AM 51.8 °F 46.4 °F 82% 29.68 in 10.0 mi South 3.5 mph - N/A   Clear
2:52 AM 48.0 °F 44.1 °F 86% 29.70 in 10.0 mi Calm Calm - N/A   Clear
3:52 AM 48.0 °F 43.0 °F 83% 29.71 in 10.0 mi NW 3.5 mph - N/A   Clear
4:52 AM 46.0 °F 42.1 °F 86% 29.72 in 10.0 mi Calm Calm - N/A   Clear
5:52 AM 44.1 °F 42.1 °F 93% 29.74 in 10.0 mi Calm Calm - N/A   Clear
6:52 AM 43.0 °F 42.1 °F 97% 29.75 in 10.0 mi Calm Calm - N/A   Clear
7:52 AM 46.0 °F 42.1 °F 86% 29.77 in 10.0 mi Calm Calm - N/A   Mostly Cloudy
8:52 AM 55.0 °F 44.1 °F 67% 29.79 in 10.0 mi Calm Calm - N/A   Overcast
9:52 AM 55.0 °F 46.0 °F 72% 29.80 in 10.0 mi Calm Calm - N/A   Overcast
10:52 AM 60.1 °F 45.0 °F 57% 29.80 in 10.0 mi Variable 3.5 mph - N/A   Mostly Cloudy
11:52 AM 62.1 °F 42.1 °F 48% 29.80 in 10.0 mi West 4.6 mph - N/A   Scattered Clouds
12:52 PM 64.9 °F 42.1 °F 43% 29.78 in 10.0 mi WNW 8.1 mph - N/A   Scattered Clouds
1:52 PM 64.4 °F 42.8 °F 45% 29.77 in 10.0 mi WNW 9.2 mph - N/A   Mostly Cloudy
2:52 PM 64.4 °F 39.2 °F 40% 29.77 in 10.0 mi WSW 8.1 mph - N/A   Mostly Cloudy
3:52 PM 64.0 °F 37.9 °F 38% 29.78 in 10.0 mi NW 12.7 mph - N/A   Mostly Cloudy
4:52 PM 64.4 °F 37.4 °F 37% 29.81 in 10.0 mi NNW 10.4 mph - N/A   Mostly Cloudy
5:52 PM 61.0 °F 37.0 °F 41% 29.83 in 10.0 mi NW 4.6 mph - N/A   Mostly Cloudy
6:52 PM 59.0 °F 39.0 °F 48% 29.85 in 10.0 mi NW 4.6 mph - N/A   Mostly Cloudy
7:52 PM 55.9 °F 36.0 °F 47% 29.87 in 10.0 mi WNW 5.8 mph - N/A   Partly Cloudy
8:52 PM 54.0 °F 37.0 °F 53% 29.89 in 10.0 mi NW 4.6 mph - N/A   Partly Cloudy
9:52 PM 50.0 °F 37.9 °F 63% 29.91 in 10.0 mi East 3.5 mph - N/A   Partly Cloudy
10:52 PM 53.1 °F 39.0 °F 59% 29.93 in 10.0 mi NNW 10.4 mph - N/A   Partly Cloudy
11:52 PM 50.0 °F 39.0 °F 66% 29.94 in 10.0 mi WNW 4.6 mph - N/A   Partly Cloudy