Arlington, DC

8:23 PM EDT on August 25, 2016 (GMT -0400)
Ronald Reagan Washington National

Weather History for KDCA - January, 2011

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Friday, January 28, 2011

  Actual Average Record
Temperature  
Mean Temperature 34 °F 36 °F  
Max Temperature 38 °F 44 °F 73 °F (1949)
Min Temperature 30 °F 29 °F -2 °F (1935)
Degree Days  
Heating Degree Days 31 29  
Month to date heating degree days 872 812  
Since 1 July heating degree days 2377 2293  
Cooling Degree Days 0 0  
Month to date cooling degree days 0 0  
Year to date cooling degree days 0 0  
Moisture  
Dew Point 28 °F    
Average Humidity 76    
Maximum Humidity 92    
Minimum Humidity 59    
Precipitation  
Precipitation 0.07 in 0.10 in 2.15 in (1922)
Month to date precipitation 2.25 2.53  
Year to date precipitation 2.25 2.53  
Snow  
Snow 0.60 in 0.30 in 21.00 in (1922)
Month to date snowfall 7.3 4.9  
Since 1 July snowfall 9.4 7.7  
Snow Depth 4.00 in    
Sea Level Pressure  
Sea Level Pressure 29.86 in    
Wind  
Wind Speed 6 mph (South)    
Max Wind Speed 16 mph    
Max Gust Speed 21 mph    
Visibility 6 miles    
Events Snow    
T = Trace of Precipitation, MM = Missing Value Source: NWS Daily Summary

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Date:

Astronomy

Jan. 28, 2011 Rise Set
Actual Time 7:17 AM EST 5:24 PM EST
Civil Twilight 6:49 AM EST 5:53 PM EST
Nautical Twilight 6:17 AM EST 6:25 PM EST
Astronomical Twilight 5:45 AM EST 6:56 PM EST
Moon 2:50 AM EST (1/28) 12:28 PM EST (1/28)
Length of Visible Light 11h 03m
Length of Day
10h 06m
Waning Crescent, 27% of the Moon is Illuminated
Jan 28
Waning Crescent
Feb 2
New
Feb 11
First Quarter
Feb 18
Full
Feb 24
Last Quarter

Hourly Weather History & Observations

Time (EST) Temp. Windchill Dew Point Humidity Pressure Visibility Wind Dir Wind Speed Gust Speed Precip Events Conditions
12:52 AM 33.1 °F 25.5 °F 25.0 °F 72% 29.90 in 10.0 mi South 9.2 mph - N/A   Overcast
1:48 AM 33.8 °F 26.4 °F 26.6 °F 75% 29.90 in 10.0 mi South 9.2 mph - N/A   Overcast
1:52 AM 33.1 °F 26.1 °F 26.1 °F 75% 29.90 in 10.0 mi South 8.1 mph - N/A   Overcast
2:16 AM 33.8 °F 27.7 °F 26.6 °F 75% 29.90 in 10.0 mi South 6.9 mph - N/A   Overcast
2:52 AM 33.1 °F 28.7 °F 27.0 °F 78% 29.89 in 10.0 mi South 4.6 mph - N/A   Overcast
3:01 AM 33.8 °F 29.6 °F 26.6 °F 75% 29.89 in 10.0 mi South 4.6 mph - N/A   Overcast
3:52 AM 33.1 °F 26.9 °F 26.1 °F 75% 29.88 in 10.0 mi South 6.9 mph - N/A   Overcast
4:36 AM 32.0 °F 27.5 °F 26.6 °F 80% 29.86 in 10.0 mi SSE 4.6 mph - N/A   Overcast
4:52 AM 32.0 °F 27.5 °F 26.1 °F 79% 29.85 in 10.0 mi SE 4.6 mph - N/A   Overcast
5:52 AM 32.0 °F 26.4 °F 26.1 °F 79% 29.85 in 10.0 mi South 5.8 mph - N/A   Overcast
6:52 AM 30.9 °F 25.2 °F 26.1 °F 82% 29.84 in 10.0 mi South 5.8 mph - N/A   Mostly Cloudy
7:37 AM 30.2 °F 26.7 °F 26.6 °F 86% 29.85 in 8.0 mi South 3.5 mph - N/A   Overcast
7:52 AM 30.9 °F 27.5 °F 27.0 °F 85% 29.85 in 9.0 mi South 3.5 mph - N/A   Overcast
8:52 AM 32.0 °F 27.5 °F 28.0 °F 85% 29.85 in 9.0 mi SSE 4.6 mph - N/A   Overcast
9:21 AM 32.0 °F 27.5 °F 28.4 °F 87% 29.86 in 8.0 mi South 4.6 mph - 0.00 in Snow Light Snow
9:34 AM 32.0 °F 28.7 °F 28.4 °F 87% 29.86 in 4.0 mi South 3.5 mph - 0.00 in Snow Light Snow
9:42 AM 32.0 °F 28.7 °F 28.4 °F 87% 29.86 in 2.0 mi SSW 3.5 mph - 0.00 in Snow Light Snow
9:47 AM 32.0 °F 27.5 °F 28.4 °F 87% 29.86 in 1.5 mi South 4.6 mph - 0.00 in Snow Light Snow
9:52 AM 32.0 °F 27.5 °F 28.0 °F 85% 29.86 in 1.0 mi South 4.6 mph - 0.00 in Snow Light Snow
10:03 AM 32.0 °F - 28.4 °F 87% 29.86 in 0.8 mi Calm Calm - 0.01 in Snow Light Snow
10:52 AM 32.0 °F 28.7 °F 30.0 °F 92% 29.85 in 0.8 mi South 3.5 mph - 0.02 in Snow Light Snow
11:07 AM 32.0 °F 27.5 °F 30.2 °F 93% 29.85 in 0.5 mi South 4.6 mph - 0.00 in Snow Snow
11:29 AM 32.0 °F 27.5 °F 30.2 °F 93% 29.84 in 0.5 mi South 4.6 mph - 0.02 in Snow Snow
11:48 AM 32.0 °F 27.5 °F 30.2 °F 93% 29.83 in 1.0 mi South 4.6 mph - 0.03 in Snow Light Snow
11:52 AM 32.0 °F 26.4 °F 30.0 °F 92% 29.83 in 0.8 mi South 5.8 mph - 0.03 in Snow Light Snow
12:14 PM 32.0 °F 26.4 °F 30.2 °F 93% 29.82 in 1.2 mi South 5.8 mph - 0.01 in Snow Light Snow
12:21 PM 32.0 °F 26.4 °F 30.2 °F 93% 29.81 in 2.5 mi South 5.8 mph - 0.01 in Snow Light Snow
12:29 PM 32.0 °F 27.5 °F 30.2 °F 93% 29.81 in 1.5 mi South 4.6 mph - 0.01 in Snow Light Snow
12:48 PM 32.0 °F - 30.2 °F 93% 29.81 in 2.5 mi Calm Calm - 0.01 in Snow Light Snow
12:52 PM 32.0 °F 28.7 °F 30.0 °F 92% 29.81 in 2.5 mi South 3.5 mph - 0.01 in Snow Light Snow
1:05 PM 33.8 °F - 30.2 °F 87% 29.80 in 3.0 mi Calm Calm - 0.00 in Snow Light Snow
1:34 PM 33.8 °F - 30.2 °F 87% 29.80 in 2.5 mi Calm Calm - 0.01 in Snow Light Snow
1:52 PM 35.1 °F - 30.0 °F 82% 29.79 in 4.0 mi Calm Calm - 0.01 in Snow Light Snow
2:52 PM 34.0 °F - 30.9 °F 89% 29.80 in 5.0 mi Calm Calm - 0.00 in   Overcast
3:52 PM 35.1 °F 32.2 °F 30.9 °F 85% 29.81 in 6.0 mi Variable 3.5 mph - N/A   Overcast
4:39 PM 35.6 °F - 30.2 °F 81% 29.83 in 9.0 mi Calm Calm - N/A   Mostly Cloudy
4:52 PM 37.0 °F 32.4 °F 30.0 °F 76% 29.83 in 9.0 mi NNW 5.8 mph - N/A   Mostly Cloudy
5:52 PM 37.0 °F 31.0 °F 30.0 °F 76% 29.87 in 10.0 mi WNW 8.1 mph - N/A   Mostly Cloudy
6:52 PM 37.0 °F 32.4 °F 30.0 °F 76% 29.90 in 9.0 mi WNW 5.8 mph - N/A   Overcast
7:52 PM 37.0 °F 31.0 °F 28.9 °F 73% 29.91 in 10.0 mi NW 8.1 mph - N/A   Overcast
8:52 PM 36.0 °F 31.1 °F 28.9 °F 76% 29.92 in 10.0 mi North 5.8 mph - N/A   Overcast
9:52 PM 37.9 °F 29.2 °F 26.1 °F 62% 29.93 in 10.0 mi NNW 15.0 mph 19.6 mph N/A   Mostly Cloudy
10:52 PM 37.9 °F 31.5 °F 25.0 °F 60% 29.94 in 10.0 mi WNW 9.2 mph - N/A   Mostly Cloudy
11:52 PM 36.0 °F 26.7 °F 24.1 °F 62% 29.96 in 10.0 mi NW 15.0 mph - N/A   Mostly Cloudy