Boston, MA

10:43 AM EDT on August 17, 2017 (GMT -0400)
Logan International

Weather History for KBOS - December, 2011

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Saturday, December 17, 2011

  Actual Average Record
Temperature  
Mean Temperature 35 °F 34 °F  
Max Temperature 41 °F 41 °F 64 °F (2000)
Min Temperature 28 °F 28 °F -4 °F (1919)
Degree Days  
Heating Degree Days 30 31  
Month to date heating degree days 368 476  
Since 1 July heating degree days 1093 1531  
Cooling Degree Days 0 0  
Month to date cooling degree days 0 0  
Year to date cooling degree days 1007 747  
Moisture  
Dew Point 21 °F    
Average Humidity 55    
Maximum Humidity 70    
Minimum Humidity 39    
Precipitation  
Precipitation 0.00 in 0.12 in 2.82 in (1970)
Month to date precipitation 2.65 2.17  
Year to date precipitation 51.08 42.16  
Snow  
Snow 0.00 in 0.30 in 6.40 in (2013)
Month to date snowfall 0.0 4.0  
Since 1 July snowfall 1.0 5.3  
Snow Depth 0.00 in    
Sea Level Pressure  
Sea Level Pressure 30.07 in    
Wind  
Wind Speed 11 mph (NW)    
Max Wind Speed 18 mph    
Max Gust Speed 25 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. 17, 2011 Rise Set
Actual Time 7:07 AM EST 4:12 PM EST
Civil Twilight 6:35 AM EST 4:44 PM EST
Nautical Twilight 5:59 AM EST 5:20 PM EST
Astronomical Twilight 5:25 AM EST 5:54 PM EST
Moon 11:59 PM EST 11:13 AM EST
Length of Visible Light 10h 09m
Length of Day
9h 05m
Waning Gibbous, 54% of the Moon is Illuminated
Dec 17
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 41.0 °F 36.4 °F 28.0 °F 60% 30.03 in 10.0 mi West 6.9 mph - N/A   Partly Cloudy
1:54 AM 39.9 °F 33.9 °F 28.0 °F 63% 30.04 in 10.0 mi WNW 9.2 mph - N/A   Scattered Clouds
2:54 AM 39.0 °F 33.4 °F 28.0 °F 65% 30.04 in 10.0 mi West 8.1 mph - N/A   Scattered Clouds
3:54 AM 39.0 °F 32.8 °F 28.0 °F 65% 30.03 in 10.0 mi West 9.2 mph - N/A   Partly Cloudy
4:54 AM 37.9 °F 30.9 °F 28.0 °F 68% 30.03 in 10.0 mi WNW 10.4 mph - N/A   Partly Cloudy
5:54 AM 37.9 °F 32.1 °F 28.0 °F 68% 30.04 in 10.0 mi West 8.1 mph - N/A   Clear
6:54 AM 37.0 °F 31.0 °F 28.0 °F 70% 30.04 in 10.0 mi West 8.1 mph - N/A   Scattered Clouds
7:54 AM 37.9 °F 30.9 °F 28.0 °F 68% 30.06 in 10.0 mi West 10.4 mph - N/A   Overcast
8:54 AM 39.0 °F 33.4 °F 28.0 °F 65% 30.06 in 10.0 mi West 8.1 mph - N/A   Overcast
9:54 AM 39.9 °F 33.9 °F 28.0 °F 63% 30.06 in 10.0 mi WNW 9.2 mph - N/A   Overcast
10:54 AM 39.9 °F 32.1 °F 24.1 °F 53% 30.06 in 10.0 mi NNW 13.8 mph 21.9 mph N/A   Overcast
11:54 AM 39.0 °F 32.3 °F 24.1 °F 55% 30.04 in 10.0 mi NNW 10.4 mph - N/A   Mostly Cloudy
12:54 PM 39.9 °F 32.9 °F 23.0 °F 51% 30.03 in 10.0 mi NNW 11.5 mph - N/A   Mostly Cloudy
1:54 PM 39.0 °F 32.3 °F 19.9 °F 46% 30.03 in 10.0 mi North 10.4 mph 20.7 mph N/A   Overcast
2:54 PM 37.9 °F 32.1 °F 19.0 °F 47% 30.05 in 10.0 mi NNW 8.1 mph - N/A   Overcast
3:54 PM 37.0 °F 28.9 °F 18.0 °F 46% 30.07 in 10.0 mi NNW 12.7 mph 21.9 mph N/A   Overcast
4:54 PM 35.1 °F 25.5 °F 16.0 °F 46% 30.09 in 10.0 mi North 15.0 mph - N/A   Overcast
5:54 PM 34.0 °F 23.8 °F 15.1 °F 46% 30.10 in 10.0 mi North 16.1 mph - N/A   Overcast
6:54 PM 32.0 °F 21.6 °F 12.9 °F 45% 30.12 in 10.0 mi NNW 15.0 mph - N/A   Mostly Cloudy
7:54 PM 30.9 °F 20.7 °F 8.1 °F 38% 30.14 in 10.0 mi NNW 13.8 mph 20.7 mph N/A   Mostly Cloudy
8:54 PM 30.0 °F 20.5 °F 8.1 °F 40% 30.14 in 10.0 mi NNW 11.5 mph 20.7 mph N/A   Overcast
9:54 PM 28.9 °F 18.2 °F 7.0 °F 40% 30.15 in 10.0 mi NNW 13.8 mph - N/A   Overcast
10:54 PM 28.9 °F 18.2 °F 8.1 °F 41% 30.14 in 10.0 mi NNW 13.8 mph - N/A   Overcast
11:54 PM 28.0 °F 17.5 °F 10.0 °F 47% 30.14 in 10.0 mi NNW 12.7 mph - N/A   Overcast