Weather History for Boston, MA

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Wednesday, December 17, 2014

  Actual Average Record
Temperature  
Mean Temperature 45 °F 34 °F  
Max Temperature 49 °F 41 °F 64 °F (2000)
Min Temperature 41 °F 28 °F -4 °F (1919)
Degree Days  
Heating Degree Days 20 31  
Month to date heating degree days 453 476  
Since 1 July heating degree days 1466 1531  
Cooling Degree Days 0 0  
Month to date cooling degree days 0 0  
Year to date cooling degree days 769 747  
Moisture  
Dew Point 41 °F    
Average Humidity 85    
Maximum Humidity 100    
Minimum Humidity 70    
Precipitation  
Precipitation 0.43 in 0.12 in 2.82 in (1970)
Month to date precipitation 5.54 2.17  
Year to date precipitation 44.23 42.16  
Sea Level Pressure  
Sea Level Pressure 29.75 in    
Wind  
Wind Speed 11 mph (NW)    
Max Wind Speed 20 mph    
Max Gust Speed 26 mph    
Visibility 6 miles    
Events Rain    
T = Trace of Precipitation, MM = Missing Value Source: NWS Daily Summary

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Daily Weather History Graph

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Date:

Astronomy

Dec. 17, 2014 Rise Set
Actual Time 7:07 AM EST 4:12 PM EST
Civil Twilight 6:35 AM EST 4:44 PM EST
Nautical Twilight 6:00 AM EST 5:20 PM EST
Astronomical Twilight 5:25 AM EST 5:54 PM EST
Moon 2:13 AM EST (12/17) 1:18 PM EST (12/17)
Length of Visible Light 10h 09m
Length of Day
9h 05m
Waning Crescent, 21% of the Moon is Illuminated
Dec 17
Waning Crescent
Dec 21
New
Dec 28
First Quarter
Jan 4
Full
Jan 13
Last Quarter

Hourly Weather History & Observations

Time (EST) Temp. Windchill Dew Point Humidity Pressure Visibility Wind Dir Wind Speed Gust Speed Precip Events Conditions
12:07 AM 42.8 °F 38.6 °F 42.8 °F 100% 29.91 in 2.0 mi North 6.9 mph - N/A   Overcast
12:33 AM 44.6 °F 41.4 °F 42.8 °F 93% 29.91 in 2.0 mi North 5.8 mph - N/A   Overcast
12:54 AM 43.0 °F 40.3 °F 42.1 °F 97% 29.90 in 1.5 mi North 4.6 mph - N/A   Overcast
1:54 AM 44.1 °F 40.8 °F 42.1 °F 93% 29.88 in 1.5 mi NNW 5.8 mph - 0.00 in Rain Light Rain
2:54 AM 45.0 °F 40.1 °F 45.0 °F 100% 29.83 in 1.5 mi NNE 9.2 mph - 0.02 in   Overcast
3:54 AM 46.0 °F 41.4 °F 45.0 °F 96% 29.81 in 1.5 mi NNE 9.2 mph - 0.05 in Rain Rain
4:54 AM 46.9 °F - 46.0 °F 97% 29.78 in 1.5 mi NNW 6.9 mph - 0.10 in Rain Rain
5:54 AM 45.0 °F 39.3 °F 43.0 °F 93% 29.75 in 3.0 mi North 11.5 mph - 0.09 in Rain Light Rain
6:01 AM 44.6 °F 38.1 °F 42.8 °F 93% 29.75 in 3.0 mi NNE 13.8 mph - 0.01 in Rain Light Rain
6:20 AM 44.6 °F 39.7 °F 44.6 °F 100% 29.74 in 6.0 mi NNW 9.2 mph - 0.02 in Rain Rain
6:54 AM 44.1 °F 39.0 °F 43.0 °F 96% 29.74 in 2.5 mi NW 9.2 mph - 0.07 in Rain Heavy Rain
7:54 AM 43.0 °F 38.2 °F 42.1 °F 97% 29.73 in 2.0 mi WNW 8.1 mph - 0.10 in   Overcast
8:54 AM 43.0 °F 37.2 °F 42.1 °F 97% 29.74 in 2.0 mi WNW 10.4 mph - 0.00 in Rain Light Rain
9:24 AM 42.8 °F 36.6 °F 41.0 °F 93% 29.74 in 10.0 mi WNW 11.5 mph - 0.00 in   Overcast
9:54 AM 43.0 °F 36.4 °F 41.0 °F 93% 29.74 in 10.0 mi WNW 12.7 mph - 0.00 in   Overcast
10:41 AM 42.8 °F 35.8 °F 41.0 °F 93% 29.73 in 2.5 mi WNW 13.8 mph - N/A   Overcast
10:54 AM 42.1 °F 34.9 °F 41.0 °F 96% 29.73 in 1.5 mi WNW 13.8 mph - N/A   Overcast
11:16 AM 42.8 °F 35.8 °F 41.0 °F 93% 29.72 in 1.5 mi WNW 13.8 mph - N/A   Overcast
11:37 AM 42.8 °F 36.6 °F 39.2 °F 87% 29.70 in 10.0 mi NW 11.5 mph - N/A   Overcast
11:54 AM 43.0 °F 36.4 °F 39.9 °F 89% 29.70 in 10.0 mi WNW 12.7 mph 19.6 mph N/A   Overcast
12:27 PM 44.6 °F 40.2 °F 41.0 °F 87% 29.69 in 10.0 mi WNW 8.1 mph - N/A   Overcast
12:54 PM 45.0 °F 39.7 °F 42.1 °F 90% 29.69 in 10.0 mi WNW 10.4 mph - N/A   Overcast
1:54 PM 46.0 °F 40.6 °F 42.1 °F 86% 29.69 in 10.0 mi NW 11.5 mph - N/A   Overcast
2:26 PM 46.4 °F 40.7 °F 42.8 °F 87% 29.69 in 10.0 mi WNW 12.7 mph - N/A   Overcast
2:54 PM 46.9 °F - 42.1 °F 83% 29.70 in 10.0 mi NW 8.1 mph - N/A   Mostly Cloudy
3:04 PM 46.4 °F 41.9 °F 42.8 °F 87% 29.69 in 10.0 mi WNW 9.2 mph - N/A   Mostly Cloudy
3:54 PM 48.0 °F - 42.1 °F 80% 29.69 in 10.0 mi WNW 6.9 mph - N/A   Scattered Clouds
4:54 PM 48.0 °F - 39.9 °F 74% 29.71 in 10.0 mi West 16.1 mph 23.0 mph N/A   Mostly Cloudy
5:54 PM 46.9 °F - 39.0 °F 74% 29.72 in 10.0 mi WNW 13.8 mph 20.7 mph N/A   Mostly Cloudy
7:54 PM 45.0 °F 38.5 °F 37.9 °F 76% 29.73 in 10.0 mi West 13.8 mph - N/A   Overcast
8:54 PM 44.1 °F 37.1 °F 36.0 °F 73% 29.72 in 10.0 mi WNW 15.0 mph 25.3 mph N/A   Overcast
9:54 PM 43.0 °F 34.5 °F 36.0 °F 76% 29.73 in 10.0 mi West 19.6 mph 26.5 mph N/A   Overcast
10:54 PM 42.1 °F 34.9 °F 34.0 °F 73% 29.73 in 10.0 mi West 13.8 mph 21.9 mph N/A   Overcast
11:54 PM 41.0 °F 32.8 °F 32.0 °F 70% 29.71 in 10.0 mi West 16.1 mph 24.2 mph N/A   Mostly Cloudy