Weather History for KDCA - December, 2012

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Sunday, December 9, 2012

  Actual Average Record
Temperature  
Mean Temperature 51 °F 41 °F  
Max Temperature 52 °F 49 °F 71 °F (1991)
Min Temperature 49 °F 34 °F 4 °F (1876)
Degree Days  
Heating Degree Days 14 24  
Month to date heating degree days 137 201  
Since 1 July heating degree days 848 896  
Cooling Degree Days 0 0  
Month to date cooling degree days 0 0  
Year to date cooling degree days 1975 1549  
Moisture  
Dew Point 48 °F    
Average Humidity 85    
Maximum Humidity 93    
Minimum Humidity 77    
Precipitation  
Precipitation 0.14 in 0.11 in 1.29 in (2009)
Month to date precipitation 0.21 0.97  
Year to date precipitation 29.63 37.66  
Snow  
Snow 0.00 in 0.00 in 1.60 in (2005)
Month to date snowfall 0.0 0.5  
Since 1 July snowfall T 1.0  
Snow Depth 0.00 in    
Sea Level Pressure  
Sea Level Pressure 30.10 in    
Wind  
Wind Speed 7 mph (NE)    
Max Wind Speed 16 mph    
Max Gust Speed 21 mph    
Visibility 4 miles    
Events Fog , Rain    
T = Trace of Precipitation, MM = Missing Value Source: NWS Daily Summary

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Date:

Astronomy

Dec. 09, 2012 Rise Set
Actual Time 7:15 AM EST 4:46 PM EST
Civil Twilight 6:45 AM EST 5:15 PM EST
Nautical Twilight 6:12 AM EST 5:49 PM EST
Astronomical Twilight 5:39 AM EST 6:21 PM EST
Moon 2:47 AM EST (12/9) 1:50 PM EST (12/9)
Length of Visible Light 10h 30m
Length of Day
9h 30m
Waning Crescent, 19% of the Moon is Illuminated
Dec 9
Waning Crescent
Dec 13
New
Dec 20
First Quarter
Dec 28
Full
Jan 4
Last Quarter

Hourly Weather History & Observations

Time (EST) Temp. Dew Point Humidity Pressure Visibility Wind Dir Wind Speed Gust Speed Precip Events Conditions
12:22 AM 51.8 °F 48.2 °F 88% 30.04 in 4.0 mi NE 5.8 mph - N/A   Scattered Clouds
12:34 AM 51.8 °F 48.2 °F 88% 30.04 in 4.0 mi NE 5.8 mph - N/A   Mostly Cloudy
12:52 AM 51.1 °F 48.9 °F 92% 30.04 in 3.0 mi NNE 4.6 mph - N/A   Overcast
1:52 AM 51.1 °F 48.9 °F 92% 30.05 in 3.0 mi ENE 4.6 mph - N/A   Overcast
2:39 AM 51.8 °F 48.2 °F 88% 30.06 in 2.5 mi ENE 4.6 mph - N/A   Mist
2:52 AM 51.1 °F 48.9 °F 92% 30.07 in 2.5 mi NE 4.6 mph - N/A   Mist
3:52 AM 50.0 °F 48.9 °F 96% 30.06 in 2.0 mi ENE 6.9 mph - N/A   Mist
4:16 AM 51.8 °F 48.2 °F 88% 30.07 in 0.5 mi NE 3.5 mph - N/A Fog Fog
4:32 AM 51.8 °F 50.0 °F 94% 30.07 in 1.8 mi NE 4.6 mph - N/A   Mist
4:52 AM 51.1 °F 48.9 °F 92% 30.08 in 2.0 mi NE 4.6 mph - N/A   Mist
5:50 AM 51.8 °F 48.2 °F 88% 30.12 in 3.0 mi North 4.6 mph - 0.00 in Rain Light Rain
5:52 AM 51.1 °F 50.0 °F 96% 30.12 in 3.0 mi North 4.6 mph - 0.00 in Rain Light Rain
6:52 AM 51.1 °F 48.9 °F 92% 30.13 in 4.0 mi NNE 9.2 mph - 0.01 in Rain Light Rain
7:52 AM 51.1 °F 48.9 °F 92% 30.17 in 4.0 mi ENE 6.9 mph - 0.06 in Rain Light Rain
8:52 AM 52.0 °F 48.9 °F 89% 30.18 in 6.0 mi NE 10.4 mph - 0.00 in   Overcast
9:19 AM 51.8 °F 48.2 °F 88% 30.18 in 6.0 mi NE 10.4 mph - N/A   Overcast
9:52 AM 52.0 °F 48.0 °F 86% 30.18 in 7.0 mi ENE 11.5 mph - N/A   Overcast
10:52 AM 52.0 °F 48.0 °F 86% 30.18 in 9.0 mi ENE 12.7 mph - N/A   Overcast
11:52 AM 51.1 °F 46.9 °F 86% 30.15 in 10.0 mi ENE 12.7 mph - 0.00 in   Overcast
12:52 PM 51.8 °F 44.6 °F 76% 30.15 in 10.0 mi East 12.7 mph - N/A   Overcast
1:17 PM 50.0 °F 46.4 °F 87% 30.14 in 7.0 mi ENE 11.5 mph - N/A   Overcast
1:52 PM 50.0 °F 46.0 °F 86% 30.13 in 3.0 mi NE 8.1 mph - N/A   Overcast
2:52 PM 50.0 °F 46.9 °F 89% 30.13 in 3.0 mi NE 6.9 mph - 0.00 in   Light Drizzle
3:09 PM 50.0 °F 46.4 °F 87% 30.13 in 3.0 mi NNE 4.6 mph - 0.00 in   Light Drizzle
3:32 PM 48.2 °F 46.4 °F 93% 30.13 in 2.5 mi NNE 6.9 mph - 0.00 in   Light Drizzle
3:44 PM 48.2 °F 46.4 °F 93% 30.13 in 3.0 mi NNE 8.1 mph - 0.00 in   Light Drizzle
3:52 PM 48.9 °F 46.9 °F 93% 30.13 in 3.0 mi NE 6.9 mph - 0.00 in   Light Drizzle
4:04 PM 48.2 °F 46.4 °F 93% 30.13 in 2.5 mi NE 6.9 mph - 0.00 in   Light Drizzle
4:32 PM 48.2 °F 46.4 °F 93% 30.12 in 1.8 mi NE 5.8 mph - 0.00 in   Light Drizzle
4:52 PM 48.9 °F 46.9 °F 93% 30.12 in 2.5 mi NE 5.8 mph - 0.00 in   Light Drizzle
5:08 PM 48.2 °F 46.4 °F 93% 30.11 in 3.0 mi NE 5.8 mph - 0.00 in   Light Drizzle
5:52 PM 48.9 °F 46.9 °F 93% 30.11 in 3.0 mi NNE 4.6 mph - 0.00 in   Light Drizzle
6:01 PM 48.2 °F 46.4 °F 93% 30.12 in 2.5 mi NNE 4.6 mph - 0.00 in   Light Drizzle
6:13 PM 48.2 °F 46.4 °F 93% 30.12 in 1.8 mi NNE 3.5 mph - 0.00 in   Light Drizzle
6:45 PM 48.2 °F 46.4 °F 93% 30.10 in 1.0 mi East 4.6 mph - 0.00 in   Light Drizzle
6:52 PM 48.9 °F 48.0 °F 97% 30.10 in 1.2 mi Calm Calm - 0.00 in Rain Light Rain
7:01 PM 48.2 °F 48.2 °F 100% 30.10 in 2.0 mi Calm Calm - 0.00 in   Light Drizzle
7:08 PM 48.2 °F 48.2 °F 100% 30.10 in 1.8 mi Calm Calm - 0.01 in Rain Light Rain
7:23 PM 50.0 °F 46.4 °F 87% 30.10 in 2.5 mi Calm Calm - 0.07 in Rain Light Rain
7:31 PM 50.0 °F 48.2 °F 94% 30.10 in 4.0 mi North 3.5 mph - 0.07 in Rain Light Rain
7:52 PM 48.9 °F 48.0 °F 97% 30.09 in 4.0 mi North 3.5 mph - 0.07 in Rain Light Rain
8:52 PM 48.9 °F 48.0 °F 97% 30.07 in 6.0 mi NE 4.6 mph - 0.00 in   Overcast
9:52 PM 48.9 °F 48.0 °F 97% 30.04 in 7.0 mi NE 4.6 mph - 0.00 in Rain Light Rain
10:01 PM 48.2 °F 48.2 °F 100% 30.04 in 4.0 mi NE 4.6 mph - 0.00 in   Overcast
10:24 PM 48.2 °F 46.4 °F 93% 30.03 in 2.5 mi NE 4.6 mph - 0.00 in   Light Drizzle
10:52 PM 48.9 °F 48.0 °F 97% 30.02 in 1.2 mi NNE 3.5 mph - 0.00 in   Light Drizzle
11:08 PM 48.2 °F 48.2 °F 100% 30.02 in 0.8 mi North 3.5 mph - 0.00 in   Light Drizzle
11:52 PM 48.9 °F 48.0 °F 97% 30.00 in 0.2 mi East 3.5 mph - 0.00 in Fog Light Drizzle