Weather History for Boston, MA

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Tuesday, December 11, 2012

  Actual Average Record
Temperature  
Mean Temperature 45 °F 36 °F  
Max Temperature 56 °F 43 °F 68 °F (1911)
Min Temperature 34 °F 30 °F -2 °F (1876)
Degree Days  
Heating Degree Days 20 29  
Month to date heating degree days 241 297  
Since 1 July heating degree days 1254 1352  
Cooling Degree Days 0 0  
Month to date cooling degree days 0 0  
Year to date cooling degree days 905 747  
Moisture  
Dew Point 35 °F    
Average Humidity 71    
Maximum Humidity 93    
Minimum Humidity 49    
Precipitation  
Precipitation T in 0.13 in 1.52 in (1936)
Month to date precipitation 1.05 1.44  
Year to date precipitation 31.85 41.43  
Snow  
Snow 0.00 in 0.20 in 2.70 in (1986)
Month to date snowfall 0.5 2.3  
Since 1 July snowfall 0.9 3.6  
Snow Depth -    
Sea Level Pressure  
Sea Level Pressure 29.83 in    
Wind  
Wind Speed 11 mph (WNW)    
Max Wind Speed 21 mph    
Max Gust Speed 26 mph    
Visibility 10 miles    
Events Rain    
T = Trace of Precipitation, MM = Missing Value Source: NWS Daily Summary

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Date:

Astronomy

Dec. 11, 2012 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 4:53 AM EST (12/11) 2:48 PM EST (12/11)
Length of Visible Light 10h 11m
Length of Day
9h 08m
Waning Crescent, 4% of the Moon is Illuminated
Dec 11
Waning Crescent
Dec 13
New
Dec 20
First Quarter
Dec 28
Full
Jan 4
Last Quarter

Hourly Weather History & Observations

Time (EST) Temp. Windchill Dew Point Humidity Pressure Visibility Wind Dir Wind Speed Gust Speed Precip Events Conditions
12:26 AM 55.4 °F - 53.6 °F 94% 29.53 in 10.0 mi WSW 8.1 mph - N/A   Overcast
12:41 AM 55.4 °F - 53.6 °F 94% 29.54 in 10.0 mi WSW 6.9 mph - N/A   Overcast
12:54 AM 55.9 °F - 53.1 °F 90% 29.55 in 10.0 mi WSW 8.1 mph - N/A   Overcast
1:36 AM 53.6 °F - 50.0 °F 88% 29.58 in 10.0 mi NNW 19.6 mph 26.5 mph N/A   Overcast
1:54 AM 50.0 °F - 44.1 °F 80% 29.60 in 10.0 mi North 16.1 mph 23.0 mph N/A   Overcast
2:54 AM 46.9 °F - 42.1 °F 83% 29.63 in 10.0 mi NNW 8.1 mph - N/A   Overcast
3:54 AM 46.9 °F - 42.1 °F 83% 29.66 in 10.0 mi NW 8.1 mph - N/A   Overcast
4:54 AM 46.9 °F - 41.0 °F 80% 29.68 in 10.0 mi NW 5.8 mph - N/A   Mostly Cloudy
5:54 AM 46.9 °F - 39.9 °F 77% 29.70 in 10.0 mi WNW 10.4 mph - 0.00 in Rain Light Rain
6:54 AM 46.0 °F 42.5 °F 39.0 °F 76% 29.72 in 10.0 mi NW 6.9 mph - 0.00 in   Overcast
7:54 AM 46.0 °F 43.1 °F 39.0 °F 76% 29.75 in 10.0 mi WNW 5.8 mph - N/A   Overcast
8:28 AM 46.4 °F 41.5 °F 37.4 °F 71% 29.77 in 10.0 mi WNW 10.4 mph - N/A   Overcast
8:54 AM 45.0 °F 40.1 °F 37.9 °F 76% 29.81 in 10.0 mi WNW 9.2 mph 18.4 mph 0.00 in Rain Light Rain
9:54 AM 45.0 °F 38.9 °F 37.0 °F 74% 29.83 in 10.0 mi West 12.7 mph - 0.00 in   Overcast
10:54 AM 46.9 °F - 35.1 °F 63% 29.83 in 10.0 mi WNW 15.0 mph - N/A   Scattered Clouds
11:54 AM 46.9 °F - 34.0 °F 61% 29.85 in 10.0 mi West 12.7 mph - N/A   Scattered Clouds
12:54 PM 46.9 °F - 32.0 °F 56% 29.86 in 10.0 mi WNW 12.7 mph - N/A   Scattered Clouds
1:54 PM 46.0 °F 41.4 °F 30.0 °F 54% 29.88 in 9.0 mi WNW 9.2 mph - N/A   Scattered Clouds
2:54 PM 46.0 °F 39.6 °F 28.0 °F 50% 29.91 in 10.0 mi NW 15.0 mph - N/A   Scattered Clouds
3:54 PM 44.1 °F 38.1 °F 26.1 °F 49% 29.94 in 10.0 mi WNW 11.5 mph - N/A   Scattered Clouds
4:54 PM 43.0 °F 36.0 °F 25.0 °F 49% 29.99 in 10.0 mi WNW 13.8 mph - N/A   Scattered Clouds
5:54 PM 42.1 °F 38.4 °F 26.1 °F 53% 30.01 in 10.0 mi NW 5.8 mph - N/A   Scattered Clouds
6:54 PM 41.0 °F 35.2 °F 24.1 °F 51% 30.05 in 10.0 mi WNW 9.2 mph - N/A   Overcast
7:54 PM 39.0 °F 31.4 °F 24.1 °F 55% 30.08 in 10.0 mi WNW 12.7 mph 20.7 mph N/A   Overcast
8:54 PM 37.0 °F 29.8 °F 23.0 °F 57% 30.09 in 10.0 mi WNW 10.4 mph - N/A   Scattered Clouds
9:54 PM 36.0 °F 26.7 °F 21.9 °F 57% 30.11 in 10.0 mi West 15.0 mph 20.7 mph N/A   Scattered Clouds
10:54 PM 35.1 °F 26.9 °F 21.0 °F 57% 30.12 in 10.0 mi WNW 11.5 mph - N/A   Scattered Clouds
11:54 PM 35.1 °F 26.9 °F 21.0 °F 57% 30.15 in 10.0 mi WNW 11.5 mph - N/A   Scattered Clouds