Weather History for KBOS - December, 2012

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Saturday, December 22, 2012

  Actual Average Record
Temperature  
Mean Temperature 34 °F 33 °F  
Max Temperature 38 °F 39 °F 62 °F (1990)
Min Temperature 30 °F 26 °F 1 °F (1883)
Degree Days  
Heating Degree Days 31 32  
Month to date heating degree days 524 634  
Since 1 July heating degree days 1537 1689  
Cooling Degree Days 0 0  
Month to date cooling degree days 0 0  
Year to date cooling degree days 905 747  
Moisture  
Dew Point 22 °F    
Average Humidity 63    
Maximum Humidity 82    
Minimum Humidity 43    
Precipitation  
Precipitation 0.00 in 0.11 in 1.31 in (1969)
Month to date precipitation 3.29 2.76  
Year to date precipitation 34.09 42.75  
Snow  
Snow 0.00 in 0.30 in 5.30 in (1975)
Month to date snowfall 0.5 5.6  
Since 1 July snowfall 0.9 6.9  
Snow Depth -    
Sea Level Pressure  
Sea Level Pressure 29.40 in    
Wind  
Wind Speed 16 mph (West)    
Max Wind Speed 28 mph    
Max Gust Speed 37 mph    
Visibility 10 miles    
Events      
T = Trace of Precipitation, MM = Missing Value Source: NWS Daily Summary

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Astronomy

Dec. 22, 2012 Rise Set
Actual Time 7:10 AM EST 4:15 PM EST
Civil Twilight 6:38 AM EST 4:47 PM EST
Nautical Twilight 6:03 AM EST 5:22 PM EST
Astronomical Twilight 5:28 AM EST 5:56 PM EST
Moon 12:34 PM EST (12/22) 1:49 AM EST (12/22)
Length of Visible Light 10h 08m
Length of Day
9h 04m
Waxing Gibbous, 73% of the Moon is Illuminated
Dec 22
Waxing Gibbous
Dec 28
Full
Jan 4
Last Quarter
Jan 11
New
Jan 18
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 37.9 °F 30.0 °F 30.0 °F 73% 29.24 in 10.0 mi SW 12.7 mph - N/A   Overcast
1:54 AM 36.0 °F 26.0 °F 28.9 °F 76% 29.25 in 10.0 mi SW 17.3 mph - N/A   Clear
2:54 AM 35.1 °F 26.4 °F 28.0 °F 76% 29.26 in 10.0 mi SW 12.7 mph - N/A   Scattered Clouds
3:54 AM 35.1 °F 26.9 °F 28.0 °F 76% 29.26 in 10.0 mi SW 11.5 mph - N/A   Scattered Clouds
4:54 AM 35.1 °F 26.9 °F 28.0 °F 76% 29.26 in 10.0 mi SW 11.5 mph - N/A   Partly Cloudy
5:54 AM 35.1 °F 26.9 °F 28.0 °F 76% 29.28 in 10.0 mi SW 11.5 mph - N/A   Mostly Cloudy
6:54 AM 36.0 °F 27.1 °F 28.9 °F 76% 29.30 in 10.0 mi SW 13.8 mph - N/A   Overcast
7:54 AM 36.0 °F 27.5 °F 28.9 °F 76% 29.31 in 10.0 mi WSW 12.7 mph - N/A   Overcast
8:54 AM 37.0 °F 28.9 °F 30.9 °F 79% 29.34 in 10.0 mi WSW 12.7 mph - N/A   Overcast
9:54 AM 37.9 °F 28.5 °F 28.0 °F 68% 29.36 in 10.0 mi West 17.3 mph 24.2 mph N/A   Overcast
10:54 AM 37.9 °F 28.5 °F 21.9 °F 53% 29.35 in 10.0 mi West 17.3 mph 28.8 mph N/A   Mostly Cloudy
11:54 AM 37.9 °F 28.5 °F 19.0 °F 47% 29.35 in 10.0 mi West 17.3 mph 33.4 mph N/A   Mostly Cloudy
12:54 PM 37.0 °F 26.4 °F 19.9 °F 50% 29.35 in 10.0 mi West 20.7 mph 29.9 mph N/A   Mostly Cloudy
1:54 PM 36.0 °F 25.3 °F 18.0 °F 48% 29.38 in 10.0 mi West 19.6 mph 36.8 mph N/A   Mostly Cloudy
2:54 PM 34.0 °F 22.4 °F 18.0 °F 52% 29.41 in 10.0 mi West 20.7 mph 34.5 mph N/A   Mostly Cloudy
3:54 PM 33.1 °F 20.6 °F 16.0 °F 50% 29.44 in 10.0 mi West 23.0 mph 34.5 mph N/A   Mostly Cloudy
4:54 PM 32.0 °F 19.2 °F 12.9 °F 45% 29.47 in 10.0 mi West 23.0 mph 33.4 mph N/A   Scattered Clouds
5:54 PM 30.9 °F 18.7 °F 12.9 °F 47% 29.52 in 10.0 mi WNW 19.6 mph 25.3 mph N/A   Scattered Clouds
6:54 PM 30.9 °F 19.1 °F 12.9 °F 47% 29.54 in 10.0 mi WNW 18.4 mph 27.6 mph N/A   Scattered Clouds
7:54 PM 30.0 °F 19.5 °F 15.1 °F 54% 29.57 in 10.0 mi West 13.8 mph 20.7 mph N/A   Partly Cloudy
8:54 PM 30.0 °F 18.3 °F 12.9 °F 49% 29.60 in 10.0 mi WNW 17.3 mph 32.2 mph N/A   Partly Cloudy
9:54 PM 30.0 °F 19.1 °F 16.0 °F 56% 29.61 in 10.0 mi WNW 15.0 mph 23.0 mph N/A   Partly Cloudy
10:54 PM 30.0 °F 19.1 °F 16.0 °F 56% 29.63 in 10.0 mi West 15.0 mph 21.9 mph N/A   Partly Cloudy
11:54 PM 30.0 °F 18.3 °F 15.1 °F 54% 29.64 in 10.0 mi West 17.3 mph 28.8 mph N/A   Partly Cloudy