Weather History for Boston, MA

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Wednesday, February 22, 2012

  Actual Average Record
Temperature  
Mean Temperature 47 °F 33 °F  
Max Temperature 57 °F 40 °F 66 °F (1997)
Min Temperature 36 °F 26 °F 2 °F (1918)
Degree Days  
Heating Degree Days 18 32  
Month to date heating degree days 616 743  
Since 1 July heating degree days 3054 3853  
Cooling Degree Days 0 0  
Month to date cooling degree days 0 0  
Year to date cooling degree days 0 0  
Moisture  
Dew Point 32 °F    
Average Humidity 61    
Maximum Humidity 92    
Minimum Humidity 30    
Precipitation  
Precipitation 0.00 in 0.12 in 1.84 in (1878)
Month to date precipitation 0.12 2.49  
Year to date precipitation 2.79 5.85  
Sea Level Pressure  
Sea Level Pressure 29.66 in    
Wind  
Wind Speed 9 mph (SW)    
Max Wind Speed 18 mph    
Max Gust Speed 26 mph    
Visibility 10 miles    
Events      
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

Feb. 22, 2012 Rise Set
Actual Time 6:31 AM EST 5:24 PM EST
Civil Twilight 6:02 AM EST 5:53 PM EST
Nautical Twilight 5:30 AM EST 6:25 PM EST
Astronomical Twilight 4:57 AM EST 6:58 PM EST
Moon 6:26 AM EST (2/22) 6:30 PM EST (2/22)
Length of Visible Light 11h 50m
Length of Day
10h 53m
New Moon, 1% of the Moon is Illuminated
Feb 22
New Moon
Feb 29
First Quarter
Mar 8
Full
Mar 14
Last Quarter
Mar 22
New

Hourly Weather History & Observations

Time (EST) Temp. Windchill Dew Point Humidity Pressure Visibility Wind Dir Wind Speed Gust Speed Precip Events Conditions
12:22 AM 37.4 °F 32.1 °F 35.6 °F 93% 29.85 in 10.0 mi South 6.9 mph - N/A   Mostly Cloudy
12:54 AM 37.9 °F 34.4 °F 36.0 °F 93% 29.83 in 10.0 mi SW 4.6 mph - N/A   Mostly Cloudy
1:54 AM 37.9 °F - 35.1 °F 89% 29.80 in 9.0 mi Calm Calm - N/A   Scattered Clouds
2:54 AM 37.0 °F 34.5 °F 36.0 °F 96% 29.77 in 7.0 mi South 3.5 mph - N/A   Mostly Cloudy
3:54 AM 37.0 °F - 35.1 °F 93% 29.75 in 6.0 mi Calm Calm - N/A   Scattered Clouds
4:54 AM 39.9 °F 35.1 °F 36.0 °F 86% 29.74 in 10.0 mi SW 6.9 mph - N/A   Overcast
5:54 AM 39.9 °F 34.5 °F 36.0 °F 86% 29.72 in 10.0 mi SSW 8.1 mph - N/A   Overcast
6:54 AM 39.0 °F 34.0 °F 36.0 °F 89% 29.70 in 10.0 mi South 6.9 mph - N/A   Overcast
7:54 AM 41.0 °F 35.8 °F 36.0 °F 82% 29.71 in 10.0 mi SW 8.1 mph - N/A   Mostly Cloudy
8:54 AM 44.1 °F 37.7 °F 37.0 °F 76% 29.71 in 10.0 mi SW 12.7 mph - N/A   Mostly Cloudy
9:54 AM 48.0 °F - 36.0 °F 63% 29.70 in 10.0 mi WSW 13.8 mph - N/A   Overcast
10:54 AM 52.0 °F - 34.0 °F 50% 29.67 in 10.0 mi WSW 9.2 mph 18.4 mph N/A   Scattered Clouds
12:54 PM 55.4 °F - 32.0 °F 41% 29.60 in 10.0 mi West 11.5 mph 25.3 mph N/A   Mostly Cloudy
1:54 PM 55.9 °F - 27.0 °F 33% 29.58 in 10.0 mi West 15.0 mph 24.2 mph N/A   Mostly Cloudy
2:54 PM 55.0 °F - 28.0 °F 35% 29.58 in 10.0 mi WNW 10.4 mph - N/A   Mostly Cloudy
3:54 PM 55.0 °F - 25.0 °F 31% 29.57 in 10.0 mi West 10.4 mph 18.4 mph N/A   Scattered Clouds
4:54 PM 54.0 °F - 26.1 °F 34% 29.57 in 10.0 mi WSW 13.8 mph 19.6 mph N/A   Mostly Cloudy
5:54 PM 52.0 °F - 24.1 °F 34% 29.57 in 10.0 mi SW 11.5 mph - N/A   Mostly Cloudy
6:54 PM 50.0 °F - 26.1 °F 39% 29.60 in 10.0 mi SW 12.7 mph - N/A   Mostly Cloudy
7:54 PM 50.0 °F - 26.1 °F 39% 29.60 in 10.0 mi SW 11.5 mph 19.6 mph N/A   Scattered Clouds
8:54 PM 46.9 °F - 27.0 °F 46% 29.60 in 10.0 mi SSW 10.4 mph - N/A   Scattered Clouds
9:54 PM 45.0 °F 38.9 °F 30.0 °F 56% 29.60 in 10.0 mi SSW 12.7 mph - N/A   Scattered Clouds
10:54 PM 44.1 °F 38.6 °F 33.1 °F 65% 29.57 in 10.0 mi SSW 10.4 mph - N/A   Scattered Clouds
11:54 PM 42.1 °F 37.1 °F 35.1 °F 76% 29.55 in 10.0 mi SSW 8.1 mph - N/A   Scattered Clouds