Boston, MA

4:43 PM EDT on April 26, 2017 (GMT -0400)
Logan International

Weather History for KBOS - December, 2011

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Monday, December 12, 2011

  Actual Average Record
Temperature  
Mean Temperature 40 °F 36 °F  
Max Temperature 49 °F 42 °F 68 °F (1979)
Min Temperature 31 °F 29 °F 2 °F (1988)
Degree Days  
Heating Degree Days 25 29  
Month to date heating degree days 250 326  
Since 1 July heating degree days 975 1381  
Cooling Degree Days 0 0  
Month to date cooling degree days 0 0  
Year to date cooling degree days 1007 747  
Moisture  
Dew Point 18 °F    
Average Humidity 42    
Maximum Humidity 63    
Minimum Humidity 21    
Precipitation  
Precipitation 0.00 in 0.12 in 4.21 in (1992)
Month to date precipitation 2.58 1.56  
Year to date precipitation 51.01 41.55  
Snow  
Snow 0.00 in 0.30 in 13.00 in (1960)
Month to date snowfall 0.0 2.6  
Since 1 July snowfall 1.0 3.9  
Snow Depth 0.00 in    
Sea Level Pressure  
Sea Level Pressure 30.50 in    
Wind  
Wind Speed 9 mph (SW)    
Max Wind Speed 17 mph    
Max Gust Speed 21 mph    
Visibility 10 miles    
Events      
T = Trace of Precipitation, MM = Missing Value Source: NWS Daily Summary

Daily Weather History Graph

Daily Weather History Graph

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Date:

Astronomy

Dec. 12, 2011 Rise Set
Actual Time 7:03 AM EST 4:11 PM EST
Civil Twilight 6:31 AM EST 4:43 PM EST
Nautical Twilight 5:56 AM EST 5:18 PM EST
Astronomical Twilight 5:22 AM EST 5:52 PM EST
Moon 6:20 PM EST (12/12) 8:32 AM EST (12/12)
Length of Visible Light 10h 11m
Length of Day
9h 07m
Waning Gibbous, 96% of the Moon is Illuminated
Dec 12
Waning Gibbous
Dec 17
Last Quarter
Dec 24
New
Jan 1
First Quarter
Jan 9
Full

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 33.1 °F 26.9 °F 16.0 °F 50% 30.58 in 10.0 mi SW 6.9 mph - 0.01 in   Clear
1:54 AM 32.0 °F 26.4 °F 17.1 °F 54% 30.58 in 10.0 mi SW 5.8 mph - N/A   Clear
2:54 AM 32.0 °F 24.2 °F 18.0 °F 56% 30.57 in 10.0 mi SSW 9.2 mph - N/A   Clear
3:54 AM 33.1 °F 24.4 °F 19.0 °F 56% 30.56 in 10.0 mi SSW 11.5 mph - N/A   Clear
4:54 AM 32.0 °F 25.6 °F 19.0 °F 59% 30.56 in 10.0 mi SW 6.9 mph - N/A   Clear
5:54 AM 30.9 °F 23.5 °F 19.9 °F 64% 30.56 in 10.0 mi SSW 8.1 mph - N/A   Clear
6:54 AM 30.9 °F 24.3 °F 19.9 °F 64% 30.56 in 10.0 mi SW 6.9 mph - N/A   Clear
7:54 AM 33.1 °F 26.9 °F 19.9 °F 59% 30.56 in 10.0 mi SW 6.9 mph - N/A   Partly Cloudy
8:54 AM 37.0 °F 31.0 °F 19.0 °F 48% 30.56 in 10.0 mi SW 8.1 mph - N/A   Partly Cloudy
9:54 AM 39.9 °F 32.1 °F 18.0 °F 41% 30.55 in 10.0 mi WSW 13.8 mph - N/A   Partly Cloudy
10:54 AM 45.0 °F 38.5 °F 14.0 °F 29% 30.53 in 10.0 mi SW 13.8 mph - N/A   Partly Cloudy
11:54 AM 46.0 °F 41.4 °F 14.0 °F 28% 30.50 in 10.0 mi SW 9.2 mph - 0.01 in   Partly Cloudy
12:54 PM 48.0 °F - 12.0 °F 24% 30.48 in 10.0 mi SW 11.5 mph - N/A   Scattered Clouds
1:54 PM 48.9 °F - 10.0 °F 21% 30.46 in 10.0 mi SW 13.8 mph 20.7 mph N/A   Mostly Cloudy
2:54 PM 46.9 °F - 16.0 °F 29% 30.46 in 10.0 mi SW 10.4 mph - N/A   Mostly Cloudy
3:54 PM 45.0 °F 38.9 °F 16.0 °F 31% 30.47 in 10.0 mi SW 12.7 mph - N/A   Mostly Cloudy
4:54 PM 43.0 °F 37.7 °F 19.9 °F 40% 30.45 in 10.0 mi SW 9.2 mph - N/A   Mostly Cloudy
5:54 PM 42.1 °F 37.7 °F 21.9 °F 45% 30.45 in 10.0 mi SW 6.9 mph - N/A   Partly Cloudy
6:54 PM 41.0 °F 36.4 °F 23.0 °F 49% 30.45 in 10.0 mi SW 6.9 mph - N/A   Partly Cloudy
7:54 PM 39.9 °F 35.1 °F 23.0 °F 51% 30.44 in 10.0 mi SW 6.9 mph - N/A   Partly Cloudy
8:54 PM 37.9 °F 32.1 °F 23.0 °F 55% 30.42 in 10.0 mi SW 8.1 mph - N/A   Partly Cloudy
9:54 PM 36.0 °F 30.3 °F 23.0 °F 59% 30.41 in 10.0 mi SW 6.9 mph - N/A   Partly Cloudy
10:54 PM 37.0 °F 30.4 °F 21.0 °F 52% 30.41 in 10.0 mi WSW 9.2 mph - 0.01 in   Partly Cloudy
11:54 PM 37.0 °F 31.0 °F 19.0 °F 48% 30.40 in 10.0 mi SW 8.1 mph - N/A   Partly Cloudy