Weather History for Boston, MA

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Friday, December 23, 2011

  Actual Average Record
Temperature  
Mean Temperature 42 °F 32 °F  
Max Temperature 47 °F 39 °F 67 °F (1990)
Min Temperature 37 °F 26 °F -12 °F (1883)
Degree Days  
Heating Degree Days 23 33  
Month to date heating degree days 525 667  
Since 1 July heating degree days 1250 1722  
Cooling Degree Days 0 0  
Month to date cooling degree days 0 0  
Year to date cooling degree days 1007 747  
Moisture  
Dew Point 35 °F    
Average Humidity 84    
Maximum Humidity 96    
Minimum Humidity 71    
Precipitation  
Precipitation 0.58 in 0.12 in 1.22 in (1947)
Month to date precipitation 3.73 2.88  
Year to date precipitation 52.16 42.87  
Snow  
Snow 0.00 in 0.40 in 8.30 in (1947)
Month to date snowfall T 6.0  
Since 1 July snowfall 1.0 7.3  
Snow Depth -    
Sea Level Pressure  
Sea Level Pressure 29.97 in    
Wind  
Wind Speed 9 mph (NNW)    
Max Wind Speed 15 mph    
Max Gust Speed 17 mph    
Visibility 8 miles    
Events Rain    
T = Trace of Precipitation, MM = Missing Value Source: NWS Daily Summary

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Date:

Astronomy

Dec. 23, 2011 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 5:29 AM EST 5:57 PM EST
Moon 5:57 AM EST (12/23) 3:20 PM EST (12/23)
Length of Visible Light 10h 08m
Length of Day
9h 04m
Waning Crescent, 1% of the Moon is Illuminated
Dec 23
Waning Crescent
Dec 24
New
Jan 1
First Quarter
Jan 9
Full
Jan 16
Last Quarter

Hourly Weather History & Observations

Time (EST) Temp. Windchill Dew Point Humidity Pressure Visibility Wind Dir Wind Speed Gust Speed Precip Events Conditions
12:54 AM 45.0 °F 43.5 °F 39.9 °F 82% 30.01 in 10.0 mi North 3.5 mph - 0.01 in Rain Light Rain
1:54 AM 44.1 °F 40.8 °F 41.0 °F 89% 29.97 in 6.0 mi East 5.8 mph - 0.05 in Rain Light Rain
2:54 AM 44.1 °F 39.0 °F 42.1 °F 93% 29.96 in 4.0 mi NE 9.2 mph - 0.08 in Rain Rain
3:17 AM 44.6 °F 40.2 °F 41.0 °F 87% 29.95 in 4.0 mi NE 8.1 mph - 0.05 in Rain Rain
3:54 AM 43.0 °F 36.8 °F 41.0 °F 93% 29.93 in 4.0 mi NE 11.5 mph - 0.15 in Rain Rain
4:15 AM 42.8 °F 37.0 °F 41.0 °F 93% 29.91 in 4.0 mi NE 10.4 mph - 0.06 in Rain Rain
4:54 AM 42.1 °F 36.6 °F 39.9 °F 92% 29.92 in 5.0 mi NNE 9.2 mph - 0.14 in Rain Rain
5:54 AM 39.9 °F 33.4 °F 36.0 °F 86% 29.92 in 10.0 mi NNE 10.4 mph - 0.12 in Rain Light Rain
6:32 AM 39.2 °F 31.6 °F 35.6 °F 87% 29.91 in 10.0 mi North 12.7 mph - 0.02 in Rain Light Rain
6:52 AM 37.4 °F 29.3 °F 35.6 °F 93% 29.90 in 10.0 mi North 12.7 mph - 0.02 in   Overcast
6:54 AM 37.9 °F 30.0 °F 35.1 °F 89% 29.89 in 10.0 mi North 12.7 mph - 0.02 in   Overcast
7:54 AM 37.0 °F 29.3 °F 35.1 °F 93% 29.90 in 6.0 mi NNW 11.5 mph - 0.00 in Rain Light Rain
8:03 AM 37.4 °F 30.3 °F 35.6 °F 93% 29.91 in 6.0 mi NNW 10.4 mph - 0.00 in Rain Light Rain
8:30 AM 37.4 °F 30.8 °F 35.6 °F 93% 29.90 in 3.0 mi NNW 9.2 mph - 0.01 in Rain Light Rain
8:42 AM 37.4 °F 31.4 °F 35.6 °F 93% 29.90 in 3.0 mi North 8.1 mph - 0.01 in Rain Light Rain
8:54 AM 37.0 °F 30.4 °F 35.1 °F 93% 29.90 in 8.0 mi NNW 9.2 mph - 0.01 in Rain Light Rain
8:59 AM 37.4 °F 29.8 °F 35.6 °F 93% 29.91 in 10.0 mi NNW 11.5 mph - 0.00 in Rain Light Rain
9:22 AM 37.4 °F 31.4 °F 35.6 °F 93% 29.91 in 10.0 mi NNW 8.1 mph - 0.00 in   Overcast
9:54 AM 39.0 °F 32.8 °F 36.0 °F 89% 29.91 in 10.0 mi NNW 9.2 mph - 0.00 in   Overcast
10:26 AM 39.2 °F 32.5 °F 35.6 °F 87% 29.91 in 10.0 mi NW 10.4 mph - N/A   Overcast
10:54 AM 39.9 °F 33.4 °F 37.0 °F 89% 29.91 in 10.0 mi NW 10.4 mph - N/A   Overcast
11:54 AM 39.0 °F 32.8 °F 36.0 °F 89% 29.91 in 9.0 mi NW 9.2 mph - N/A   Overcast
12:54 PM 39.0 °F 33.4 °F 36.0 °F 89% 29.91 in 10.0 mi NW 8.1 mph - N/A   Overcast
1:54 PM 39.9 °F 33.9 °F 36.0 °F 86% 29.94 in 10.0 mi WNW 9.2 mph - N/A   Overcast
2:10 PM 41.0 °F 35.2 °F 35.6 °F 81% 29.94 in 10.0 mi WNW 9.2 mph - N/A   Overcast
2:54 PM 42.1 °F 37.1 °F 36.0 °F 79% 29.96 in 10.0 mi NW 8.1 mph - N/A   Mostly Cloudy
3:47 PM 42.8 °F 37.5 °F 35.6 °F 76% 29.98 in 10.0 mi WNW 9.2 mph - N/A   Scattered Clouds
3:54 PM 42.1 °F 37.7 °F 35.1 °F 76% 29.98 in 10.0 mi NW 6.9 mph - N/A   Scattered Clouds
4:54 PM 42.1 °F 36.6 °F 34.0 °F 73% 30.01 in 10.0 mi NW 9.2 mph 16.1 mph N/A   Scattered Clouds
5:54 PM 42.1 °F 38.4 °F 34.0 °F 73% 30.04 in 10.0 mi WNW 5.8 mph - N/A   Scattered Clouds
6:54 PM 42.1 °F 34.5 °F 32.0 °F 67% 30.07 in 10.0 mi NW 15.0 mph 21.9 mph N/A   Overcast
7:54 PM 39.0 °F 30.3 °F 30.0 °F 70% 30.11 in 10.0 mi NW 16.1 mph - N/A   Mostly Cloudy
8:54 PM 37.0 °F 30.4 °F 25.0 °F 62% 30.14 in 10.0 mi NNW 9.2 mph - N/A   Partly Cloudy
9:54 PM 35.1 °F 28.6 °F 24.1 °F 64% 30.15 in 10.0 mi NNW 8.1 mph - N/A   Partly Cloudy
10:54 PM 33.1 °F 26.1 °F 21.0 °F 61% 30.17 in 10.0 mi NNW 8.1 mph - N/A   Partly Cloudy
11:54 PM 30.9 °F 22.2 °F 21.0 °F 67% 30.19 in 10.0 mi North 10.4 mph - N/A   Clear