Philadelphia, PA

3:22 PM EST on December 06, 2016 (GMT -0500)
Philadelphia International

Weather History for KPHL - December, 2011

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Wednesday, December 21, 2011

  Actual Average Record
Temperature  
Mean Temperature 52 °F 36 °F  
Max Temperature 63 °F 43 °F 67 °F (2013)
Min Temperature 41 °F 29 °F 1 °F (1942)
Degree Days  
Heating Degree Days 13 29  
Month to date heating degree days 443 551  
Since 1 July heating degree days 1096 1367  
Cooling Degree Days 0 0  
Month to date cooling degree days 0 0  
Year to date cooling degree days 1617 1301  
Growing Degree Days 2 (Base 50)    
Moisture  
Dew Point 49 °F    
Average Humidity 86    
Maximum Humidity 93    
Minimum Humidity 78    
Precipitation  
Precipitation 0.07 in 0.11 in 1.40 in (1902)
Month to date precipitation 2.41 2.52  
Year to date precipitation 62.37 40.49  
Snow  
Snow 0.00 in 0.10 in 2.70 in (1962)
Month to date snowfall 0.0 1.9  
Since 1 July snowfall 0.3 2.2  
Snow Depth 0.00 in    
Sea Level Pressure  
Sea Level Pressure 29.91 in    
Wind  
Wind Speed 10 mph (SSW)    
Max Wind Speed 28 mph    
Max Gust Speed 35 mph    
Visibility 9 miles    
Events Rain    
T = Trace of Precipitation, MM = Missing Value Source: NWS Daily Summary

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Daily Weather History Graph

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Date:

Astronomy

Dec. 21, 2011 Rise Set
Actual Time 7:18 AM EST 4:39 PM EST
Civil Twilight 6:48 AM EST 5:09 PM EST
Nautical Twilight 6:14 AM EST 5:43 PM EST
Astronomical Twilight 5:41 AM EST 6:16 PM EST
Moon 3:49 AM EST (12/21) 1:56 PM EST (12/21)
Length of Visible Light 10h 21m
Length of Day
9h 20m
Waning Crescent, 12% of the Moon is Illuminated
Dec 21
Waning Crescent
Dec 24
New
Jan 1
First Quarter
Jan 9
Full
Jan 16
Last Quarter

Hourly Weather History & Observations

Time (EST) Temp. Windchill Dew Point Humidity Pressure Visibility Wind Dir Wind Speed Gust Speed Precip Events Conditions
12:54 AM 42.1 °F 39.2 °F 37.9 °F 85% 30.12 in 10.0 mi East 4.6 mph - N/A   Mostly Cloudy
1:54 AM 42.1 °F 40.2 °F 37.9 °F 85% 30.13 in 10.0 mi NNE 3.5 mph - N/A   Mostly Cloudy
2:54 AM 42.1 °F 40.2 °F 39.0 °F 89% 30.11 in 9.0 mi East 3.5 mph - N/A   Mostly Cloudy
3:54 AM 41.0 °F - 39.0 °F 93% 30.06 in 8.0 mi Calm Calm - N/A   Mostly Cloudy
4:54 AM 44.1 °F - 41.0 °F 89% 30.06 in 7.0 mi Calm Calm - N/A   Mostly Cloudy
5:17 AM 42.8 °F - 39.2 °F 87% 30.05 in 8.0 mi Calm Calm - N/A   Mostly Cloudy
5:54 AM 44.1 °F 42.5 °F 41.0 °F 89% 30.05 in 8.0 mi NNE 3.5 mph - N/A   Overcast
6:24 AM 44.6 °F 43.1 °F 42.8 °F 93% 30.04 in 8.0 mi ENE 3.5 mph - N/A   Overcast
6:54 AM 44.1 °F - 42.1 °F 93% 30.04 in 8.0 mi Calm Calm - N/A   Overcast
7:54 AM 44.1 °F 42.5 °F 41.0 °F 89% 30.03 in 7.0 mi ENE 3.5 mph - N/A   Overcast
8:54 AM 46.9 °F - 43.0 °F 86% 30.01 in 7.0 mi NE 4.6 mph - N/A   Overcast
9:03 AM 46.4 °F - 42.8 °F 87% 30.01 in 7.0 mi Calm Calm - 0.00 in Rain Light Rain
9:54 AM 48.0 °F - 44.1 °F 86% 30.00 in 7.0 mi ENE 3.5 mph - 0.00 in   Overcast
10:26 AM 48.2 °F - 44.6 °F 87% 29.98 in 7.0 mi East 3.5 mph - N/A   Overcast
10:54 AM 50.0 °F - 46.0 °F 86% 29.96 in 7.0 mi East 4.6 mph - 0.00 in   Overcast
11:50 AM 53.6 °F - 48.2 °F 82% 29.91 in 7.0 mi Calm Calm - N/A   Overcast
11:54 AM 54.0 °F - 48.9 °F 83% 29.92 in 7.0 mi Calm Calm - N/A   Overcast
12:54 PM 59.0 °F - 52.0 °F 78% 29.88 in 9.0 mi SSW 12.7 mph - 0.00 in Rain Light Rain
1:10 PM 59.0 °F - 51.8 °F 77% 29.87 in 10.0 mi SSW 13.8 mph 25.3 mph 0.00 in   Overcast
1:27 PM 59.0 °F - 51.8 °F 77% 29.87 in 10.0 mi SSW 11.5 mph - 0.01 in Rain Light Rain
1:49 PM 57.2 °F - 53.6 °F 88% 29.86 in 10.0 mi SSW 13.8 mph 24.2 mph 0.01 in Rain Light Rain
1:54 PM 57.9 °F - 53.1 °F 84% 29.85 in 10.0 mi SSW 15.0 mph 23.0 mph 0.01 in Rain Light Rain
2:08 PM 57.2 °F - 53.6 °F 88% 29.86 in 10.0 mi SSW 16.1 mph 21.9 mph 0.00 in Rain Light Rain
2:46 PM 57.2 °F - 53.6 °F 88% 29.84 in 10.0 mi SSW 15.0 mph 21.9 mph 0.01 in Rain Light Rain
2:54 PM 59.0 °F - 53.1 °F 81% 29.83 in 10.0 mi SSW 18.4 mph 25.3 mph 0.01 in   Overcast
3:27 PM 59.0 °F - 53.6 °F 82% 29.84 in 9.0 mi SSW 15.0 mph 24.2 mph 0.00 in Rain Light Rain
3:54 PM 57.9 °F - 54.0 °F 87% 29.82 in 9.0 mi SSW 15.0 mph 24.2 mph 0.01 in Rain Light Rain
4:31 PM 59.0 °F - 53.6 °F 82% 29.81 in 10.0 mi SSW 16.1 mph 25.3 mph 0.01 in Rain Light Rain
4:54 PM 57.9 °F - 54.0 °F 87% 29.82 in 10.0 mi SW 16.1 mph 20.7 mph 0.01 in Rain Light Rain
5:54 PM 59.0 °F - 55.0 °F 87% 29.80 in 10.0 mi SW 11.5 mph 21.9 mph 0.02 in Rain Light Rain
6:54 PM 60.1 °F - 55.9 °F 86% 29.78 in 10.0 mi SSW 18.4 mph 24.2 mph 0.00 in   Overcast
7:54 PM 61.0 °F - 55.9 °F 83% 29.76 in 10.0 mi SSW 21.9 mph 31.1 mph N/A   Overcast
8:54 PM 61.0 °F - 57.0 °F 87% 29.78 in 10.0 mi SW 20.7 mph - N/A   Overcast
9:50 PM 62.6 °F - 55.4 °F 77% 29.78 in 10.0 mi SW 25.3 mph 33.4 mph 0.01 in   Mostly Cloudy
9:54 PM 62.1 °F - 55.9 °F 80% 29.78 in 10.0 mi SW 23.0 mph 33.4 mph 0.01 in   Mostly Cloudy
10:37 PM 60.8 °F - 55.4 °F 82% 29.80 in 10.0 mi WSW 19.6 mph 29.9 mph N/A   Mostly Cloudy
10:54 PM 61.0 °F - 55.9 °F 83% 29.83 in 10.0 mi West 18.4 mph - N/A   Mostly Cloudy
11:05 PM 60.8 °F - 55.4 °F 82% 29.83 in 10.0 mi WSW 20.7 mph - N/A   Scattered Clouds
11:54 PM 60.1 °F - 54.0 °F 80% 29.86 in 10.0 mi West 15.0 mph - N/A   Scattered Clouds