Weather History for KBOS - December, 2010

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Sunday, December 19, 2010

  Actual Average Record
Temperature  
Mean Temperature 31 °F 34 °F  
Max Temperature 37 °F 40 °F 64 °F (1899)
Min Temperature 25 °F 27 °F -10 °F (1875)
Degree Days  
Heating Degree Days 34 31  
Month to date heating degree days 598 538  
Since 1 July heating degree days 1527 1593  
Cooling Degree Days 0 0  
Month to date cooling degree days 0 0  
Year to date cooling degree days 1082 747  
Moisture  
Dew Point 20 °F    
Average Humidity 63    
Maximum Humidity 81    
Minimum Humidity 44    
Precipitation  
Precipitation T in 0.12 in 1.35 in (1986)
Month to date precipitation 1.70 2.41  
Year to date precipitation 47.75 42.40  
Snow  
Snow T in 0.30 in 10.00 in (1945)
Month to date snowfall T 4.7  
Since 1 July snowfall T 6.0  
Snow Depth 0.00 in    
Sea Level Pressure  
Sea Level Pressure 29.99 in    
Wind  
Wind Speed 8 mph (North)    
Max Wind Speed 14 mph    
Max Gust Speed 17 mph    
Visibility 10 miles    
Events      
T = Trace of Precipitation, MM = Missing Value Source: NWS Daily Summary

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Astronomy

Dec. 19, 2010 Rise Set
Actual Time 7:08 AM EST 4:13 PM EST
Civil Twilight 6:36 AM EST 4:45 PM EST
Nautical Twilight 6:01 AM EST 5:21 PM EST
Astronomical Twilight 5:27 AM EST 5:55 PM EST
Moon 2:42 PM EST (12/19) 5:29 AM EST (12/19)
Length of Visible Light 10h 08m
Length of Day
9h 04m
Waxing Gibbous, 97% of the Moon is Illuminated
Dec 19
Waxing Gibbous
Dec 21
Full
Dec 27
Last Quarter
Jan 4
New
Jan 12
First 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 27.0 °F 20.5 °F 21.9 °F 81% 30.06 in 9.0 mi North 5.8 mph - N/A   Partly Cloudy
1:54 AM 28.0 °F - 23.0 °F 81% 30.08 in 9.0 mi Calm Calm - N/A   Partly Cloudy
2:54 AM 28.0 °F - 23.0 °F 81% 30.07 in 8.0 mi Calm Calm - N/A   Scattered Clouds
3:54 AM 28.9 °F 21.9 °F 21.9 °F 75% 30.07 in 10.0 mi NNW 6.9 mph - N/A   Mostly Cloudy
4:54 AM 28.9 °F 22.8 °F 21.0 °F 72% 30.06 in 10.0 mi North 5.8 mph - N/A   Mostly Cloudy
5:54 AM 28.9 °F 21.9 °F 21.0 °F 72% 30.06 in 9.0 mi North 6.9 mph - N/A   Mostly Cloudy
6:54 AM 28.0 °F 20.8 °F 19.9 °F 72% 30.06 in 10.0 mi North 6.9 mph - N/A   Partly Cloudy
7:54 AM 30.0 °F 23.2 °F 19.9 °F 66% 30.06 in 10.0 mi North 6.9 mph - N/A   Mostly Cloudy
8:54 AM 32.0 °F 24.8 °F 19.9 °F 61% 30.06 in 10.0 mi North 8.1 mph - N/A   Mostly Cloudy
9:54 AM 33.1 °F 25.5 °F 19.0 °F 56% 30.06 in 10.0 mi North 9.2 mph - N/A   Mostly Cloudy
10:54 AM 34.0 °F 28.0 °F 17.1 °F 50% 30.04 in 10.0 mi NNW 6.9 mph - N/A   Overcast
11:54 AM 36.0 °F 28.5 °F 17.1 °F 46% 29.99 in 10.0 mi North 10.4 mph - N/A   Overcast
12:54 PM 37.0 °F 29.8 °F 19.0 °F 48% 29.97 in 10.0 mi North 10.4 mph - N/A   Mostly Cloudy
1:54 PM 36.0 °F 29.6 °F 18.0 °F 48% 29.98 in 10.0 mi North 8.1 mph - N/A   Overcast
2:54 PM 36.0 °F 30.3 °F 17.1 °F 46% 29.99 in 10.0 mi North 6.9 mph - N/A   Overcast
3:54 PM 35.1 °F 27.4 °F 16.0 °F 46% 29.97 in 10.0 mi North 10.4 mph - N/A   Mostly Cloudy
4:54 PM 34.0 °F 28.8 °F 17.1 °F 50% 29.97 in 10.0 mi North 5.8 mph - N/A   Mostly Cloudy
5:54 PM 34.0 °F 26.6 °F 19.0 °F 54% 29.96 in 10.0 mi North 9.2 mph - N/A   Overcast
6:42 PM 33.8 °F 26.4 °F 19.4 °F 56% 29.95 in 10.0 mi North 9.2 mph - N/A   Overcast
6:54 PM 34.0 °F 26.6 °F 19.9 °F 56% 29.95 in 10.0 mi North 9.2 mph - N/A   Overcast
7:54 PM 34.0 °F 26.0 °F 19.9 °F 56% 29.92 in 10.0 mi North 10.4 mph - N/A   Overcast
8:20 PM 33.8 °F 25.3 °F 21.2 °F 60% 29.92 in 10.0 mi North 11.5 mph - N/A   Overcast
8:54 PM 34.0 °F 26.0 °F 19.9 °F 56% 29.91 in 10.0 mi North 10.4 mph - N/A   Overcast
9:54 PM 34.0 °F 26.0 °F 19.9 °F 56% 29.89 in 10.0 mi North 10.4 mph - 0.00 in   Overcast
10:54 PM 33.1 °F 23.9 °F 21.0 °F 61% 29.87 in 10.0 mi North 12.7 mph - N/A   Overcast
11:54 PM 33.1 °F 25.5 °F 21.0 °F 61% 29.86 in 10.0 mi North 9.2 mph - N/A   Overcast