Weather History for KIAD - January, 2013

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Wednesday, January 16, 2013

  Actual Average Record
Temperature  
Mean Temperature 38 °F 33 °F  
Max Temperature 41 °F 42 °F 65 °F (1974)
Min Temperature 34 °F 24 °F -4 °F (1964)
Degree Days  
Heating Degree Days 27 32  
Month to date heating degree days 413 512  
Since 1 July heating degree days 2101 2310  
Cooling Degree Days 0 0  
Month to date cooling degree days 0 0  
Year to date cooling degree days 0 0  
Moisture  
Dew Point 35 °F    
Average Humidity 96    
Maximum Humidity 100    
Minimum Humidity 92    
Precipitation  
Precipitation 0.29 in 0.08 in 0.64 in (1991)
Month to date precipitation 1.09 1.33  
Year to date precipitation 1.09 1.33  
Snow  
Snow 0.00 in 0.20 in 2.30 in (1965)
Month to date snowfall T 3.2  
Since 1 July snowfall 2.2 7.2  
Snow Depth 0.00 in    
Sea Level Pressure  
Sea Level Pressure 30.05 in    
Wind  
Wind Speed 4 mph (NNE)    
Max Wind Speed 16 mph    
Max Gust Speed 22 mph    
Visibility 6 miles    
Events Rain    
T = Trace of Precipitation, MM = Missing Value Source: NWS Daily Summary

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Astronomy

Jan. 16, 2013 Rise Set
Actual Time 7:26 AM EST 5:13 PM EST
Civil Twilight 6:57 AM EST 5:42 PM EST
Nautical Twilight 6:24 AM EST 6:15 PM EST
Astronomical Twilight 5:52 AM EST 6:47 PM EST
Moon 10:05 AM EST (1/16) 10:59 PM EST (1/16)
Length of Visible Light 10h 45m
Length of Day
9h 46m
Waxing Crescent, 28% of the Moon is Illuminated
Jan 16
Waxing Crescent
Jan 18
First Quarter
Jan 26
Full
Feb 3
Last Quarter
Feb 10
New

Hourly Weather History & Observations

Time (EST) Temp. Windchill Dew Point Humidity Pressure Visibility Wind Dir Wind Speed Gust Speed Precip Events Conditions
12:08 AM 35.6 °F 29.9 °F 33.8 °F 93% 30.16 in 3.0 mi NNE 6.9 mph - 0.02 in Rain Light Rain
12:17 AM 35.6 °F 29.9 °F 33.8 °F 93% 30.15 in 2.5 mi NNE 6.9 mph - 0.03 in Rain Light Rain
12:45 AM 35.6 °F 28.6 °F 33.8 °F 93% 30.12 in 2.5 mi NE 9.2 mph - 0.05 in Rain Light Rain
12:52 AM 35.1 °F 30.1 °F 33.1 °F 92% 30.14 in 2.5 mi NNE 5.8 mph - 0.05 in Rain Light Rain
1:02 AM 35.6 °F 31.7 °F 33.8 °F 93% 30.14 in 2.5 mi NNE 4.6 mph - 0.01 in Rain Light Rain
1:35 AM 35.6 °F 29.9 °F 33.8 °F 93% 30.13 in 3.0 mi NNE 6.9 mph - 0.05 in Rain Light Rain
1:41 AM 35.6 °F 30.7 °F 33.8 °F 93% 30.13 in 2.5 mi NNE 5.8 mph - 0.06 in Rain Light Rain
1:48 AM 35.6 °F 30.7 °F 33.8 °F 93% 30.14 in 2.5 mi North 5.8 mph - 0.06 in Rain Light Rain
1:52 AM 35.1 °F 29.3 °F 33.1 °F 92% 30.15 in 2.5 mi North 6.9 mph - 0.07 in Rain Light Rain
2:20 AM 33.8 °F 27.7 °F 33.8 °F 100% 30.15 in 2.5 mi NNW 6.9 mph - 0.06 in Rain Rain
2:26 AM 33.8 °F 27.7 °F 33.8 °F 100% 30.15 in 3.0 mi North 6.9 mph - 0.07 in Rain Light Rain
2:52 AM 35.1 °F 30.1 °F 33.1 °F 92% 30.14 in 3.0 mi NNE 5.8 mph - 0.09 in Rain Light Rain
3:25 AM 35.6 °F 31.7 °F 33.8 °F 93% 30.11 in 5.0 mi NE 4.6 mph - 0.01 in   Overcast
3:52 AM 35.1 °F 31.0 °F 33.1 °F 92% 30.10 in 9.0 mi ENE 4.6 mph - 0.01 in   Overcast
4:07 AM 35.6 °F 32.8 °F 33.8 °F 93% 30.08 in 10.0 mi ENE 3.5 mph - 0.00 in Rain Light Rain
4:52 AM 35.1 °F 32.2 °F 33.1 °F 92% 30.04 in 10.0 mi ESE 3.5 mph - 0.01 in   Overcast
5:05 AM 35.6 °F - 33.8 °F 93% 30.05 in 10.0 mi Calm Calm - N/A   Overcast
5:52 AM 35.1 °F 30.1 °F 33.1 °F 92% 30.09 in 9.0 mi NW 5.8 mph - 0.00 in   Overcast
6:52 AM 35.1 °F 30.1 °F 33.1 °F 92% 30.05 in 9.0 mi NNE 5.8 mph - 0.01 in Rain Light Rain
7:52 AM 35.1 °F - 33.1 °F 92% 30.04 in 8.0 mi Calm Calm - 0.00 in   Light Drizzle
8:30 AM 35.6 °F 31.7 °F 33.8 °F 93% 30.06 in 3.0 mi West 4.6 mph - 0.02 in Rain Light Rain
8:52 AM 35.1 °F - 34.0 °F 96% 30.06 in 3.0 mi Calm Calm - 0.03 in Rain Light Rain
9:52 AM 36.0 °F 29.0 °F 34.0 °F 93% 30.02 in 3.0 mi South 9.2 mph - 0.02 in Rain Light Rain
10:17 AM 35.6 °F 30.7 °F 33.8 °F 93% 30.04 in 3.0 mi SSW 5.8 mph - 0.00 in   Overcast
10:52 AM 36.0 °F 30.3 °F 35.1 °F 97% 30.03 in 3.0 mi SSW 6.9 mph - 0.00 in   Overcast
11:33 AM 37.4 °F 30.8 °F 35.6 °F 93% 29.94 in 3.0 mi South 9.2 mph - 0.01 in Rain Light Rain
11:52 AM 37.0 °F 29.8 °F 36.0 °F 96% 29.91 in 3.0 mi South 10.4 mph - 0.01 in   Overcast
12:52 PM 37.9 °F 31.5 °F 36.0 °F 93% 29.91 in 3.0 mi WSW 9.2 mph - 0.00 in   Overcast
1:52 PM 39.0 °F 35.7 °F 37.0 °F 93% 29.88 in 6.0 mi Variable 4.6 mph - 0.00 in Rain Light Rain
2:52 PM 39.0 °F 36.8 °F 36.0 °F 89% 29.95 in 6.0 mi NNW 3.5 mph - 0.00 in   Overcast
3:52 PM 39.0 °F - 37.0 °F 93% 29.95 in 6.0 mi Calm Calm - N/A   Overcast
4:52 PM 39.0 °F - 37.9 °F 96% 29.96 in 10.0 mi Calm Calm - 0.00 in   Overcast
5:52 PM 39.9 °F - 37.9 °F 93% 29.98 in 10.0 mi Calm Calm - N/A   Mostly Cloudy
6:52 PM 39.0 °F 36.8 °F 37.0 °F 93% 29.99 in 10.0 mi SW 3.5 mph - N/A   Mostly Cloudy
7:52 PM 39.9 °F 37.8 °F 37.9 °F 93% 29.99 in 10.0 mi SSW 3.5 mph - N/A   Overcast
8:52 PM 39.9 °F 37.8 °F 37.9 °F 93% 29.99 in 10.0 mi South 3.5 mph - N/A   Overcast
9:52 PM 39.9 °F 36.7 °F 39.0 °F 97% 29.99 in 10.0 mi South 4.6 mph - 0.00 in   Overcast
10:52 PM 39.9 °F - 39.0 °F 97% 29.99 in 9.0 mi Calm Calm - 0.00 in   Overcast
11:52 PM 39.9 °F - 39.0 °F 97% 29.97 in 9.0 mi Calm Calm - 0.00 in   Mostly Cloudy