Weather History for Boston, MA

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Friday, March 18, 2011

  Actual Average Record
Temperature  
Mean Temperature 58 °F 39 °F  
Max Temperature 70 °F 46 °F 74 °F (2012)
Min Temperature 46 °F 32 °F 5 °F (1885)
Degree Days  
Heating Degree Days 7 26  
Month to date heating degree days 453 513  
Since 1 July heating degree days 4487 4555  
Cooling Degree Days 0 0  
Month to date cooling degree days 0 0  
Year to date cooling degree days 0 0  
Growing Degree Days 8 (Base 50)    
Moisture  
Dew Point 32 °F    
Average Humidity 43    
Maximum Humidity 71    
Minimum Humidity 14    
Precipitation  
Precipitation 0.00 in 0.15 in 3.49 in (1968)
Month to date precipitation 1.58 2.40  
Year to date precipitation 10.72 9.01  
Sea Level Pressure  
Sea Level Pressure 29.78 in    
Wind  
Wind Speed 19 mph (WSW)    
Max Wind Speed 37 mph    
Max Gust Speed 48 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

Mar. 18, 2011 Rise Set
Actual Time 6:51 AM EDT 6:53 PM EDT
Civil Twilight 6:23 AM EDT 7:21 PM EDT
Nautical Twilight 5:50 AM EDT 7:54 PM EDT
Astronomical Twilight 5:17 AM EDT 8:27 PM EDT
Moon 5:57 PM EDT (3/18) 5:47 AM EDT (3/18)
Length of Visible Light 12h 58m
Length of Day
12h 02m
Waxing Gibbous, 98% of the Moon is Illuminated
Mar 18
Waxing Gibbous
Mar 19
Full
Mar 26
Last Quarter
Apr 3
New
Apr 11
First Quarter

Hourly Weather History & Observations

Time (EDT) Temp. Windchill Dew Point Humidity Pressure Visibility Wind Dir Wind Speed Gust Speed Precip Events Conditions
12:54 AM 46.9 °F - 35.1 °F 63% 29.95 in 10.0 mi SSW 11.5 mph - N/A   Scattered Clouds
1:54 AM 46.9 °F - 35.1 °F 63% 29.92 in 10.0 mi SSW 10.4 mph - N/A   Scattered Clouds
2:54 AM 46.0 °F 40.6 °F 35.1 °F 66% 29.90 in 10.0 mi SW 11.5 mph - N/A   Clear
3:54 AM 48.0 °F - 35.1 °F 61% 29.86 in 10.0 mi SW 17.3 mph - N/A   Partly Cloudy
4:54 AM 48.0 °F - 36.0 °F 63% 29.82 in 10.0 mi SW 15.0 mph 21.9 mph N/A   Mostly Cloudy
5:54 AM 46.9 °F - 37.0 °F 68% 29.80 in 10.0 mi WSW 16.1 mph - N/A   Mostly Cloudy
6:54 AM 48.9 °F - 37.0 °F 64% 29.75 in 10.0 mi SW 17.3 mph - N/A   Mostly Cloudy
7:54 AM 50.0 °F - 37.9 °F 63% 29.74 in 10.0 mi SW 18.4 mph - N/A   Mostly Cloudy
8:54 AM 54.0 °F - 37.9 °F 55% 29.72 in 10.0 mi SW 18.4 mph - N/A   Mostly Cloudy
9:54 AM 59.0 °F - 39.0 °F 48% 29.70 in 10.0 mi WSW 25.3 mph 32.2 mph N/A   Scattered Clouds
10:54 AM 62.1 °F - 41.0 °F 46% 29.69 in 10.0 mi WSW 19.6 mph 28.8 mph N/A   Mostly Cloudy
11:54 AM 64.4 °F - 42.8 °F 45% 29.67 in 10.0 mi WSW 18.4 mph 27.6 mph N/A   Overcast
12:54 PM 66.9 °F - 44.1 °F 44% 29.65 in 10.0 mi West 20.7 mph 33.4 mph N/A   Mostly Cloudy
1:54 PM 69.1 °F - 39.9 °F 35% 29.63 in 10.0 mi West 24.2 mph 41.4 mph N/A   Mostly Cloudy
2:54 PM 69.1 °F - 30.9 °F 24% 29.65 in 10.0 mi West 25.3 mph 39.1 mph N/A   Mostly Cloudy
3:54 PM 69.1 °F - 18.0 °F 14% 29.68 in 10.0 mi West 28.8 mph 39.1 mph N/A   Mostly Cloudy
4:54 PM 66.9 °F - 18.0 °F 15% 29.70 in 10.0 mi West 24.2 mph 43.7 mph N/A   Mostly Cloudy
5:54 PM 64.0 °F - 19.9 °F 18% 29.74 in 10.0 mi WNW 24.2 mph 34.5 mph N/A   Mostly Cloudy
6:54 PM 62.1 °F - 21.9 °F 21% 29.79 in 10.0 mi West 24.2 mph 33.4 mph N/A   Mostly Cloudy
7:54 PM 59.0 °F - 24.1 °F 26% 29.82 in 10.0 mi West 15.0 mph 24.2 mph N/A   Scattered Clouds
8:54 PM 57.9 °F - 25.0 °F 28% 29.87 in 10.0 mi West 16.1 mph 24.2 mph N/A   Scattered Clouds
9:54 PM 55.9 °F - 26.1 °F 32% 29.88 in 9.0 mi West 17.3 mph 21.9 mph N/A   Scattered Clouds
10:54 PM 55.0 °F - 26.1 °F 33% 29.89 in 10.0 mi WNW 15.0 mph - N/A   Scattered Clouds
11:54 PM 54.0 °F - 26.1 °F 34% 29.90 in 10.0 mi NNW 11.5 mph 21.9 mph N/A   Scattered Clouds