Boston
The tables below display average monthly climate and weather indicators in Boston Massachusetts.
Temperature by: Fahrenheit / Centigrade
| Boston Temperature |
Jan |
Feb |
Mar |
Apr |
May |
Jun |
Jul |
Aug |
Sep |
Oct |
Nov |
Dec |
Annual |
| Avg. Temperature | -1.9 | -0.9 | 3.7 | 8.9 | 14.6 | 19.8 | 23.1 | 22.2 | 18.2 | 12.7 | 7.4 | 0.9 | 10.7 |
| Avg. Max Temperature | 2.1 | 3.1 | 7.7 | 13.3 | 19.2 | 24.6 | 27.7 | 26.6 | 22.7 | 17.1 | 11.2 | 4.7 | 15.0 |
| Avg. Min Temperature | -5.8 | -5.0 | -0.4 | 4.6 | 9.9 | 15.1 | 18.4 | 17.8 | 13.8 | 8.3 | 3.5 | -2.9 | 6.4 |
| Days with Max Temp of 32 C or Higher | 0.0 | 0.0 | 0.0 | < 0.5 | < 0.5 | 3.0 | 6.0 | 3.0 | 1.0 | 0.0 | 0.0 | 0.0 | 12.0 |
| Days with Min Temp Below Freezing | 26.0 | 23.0 | 17.0 | 2.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 7.0 | 21.0 | 97.0 |
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| Boston Heating and Cooling |
Jan |
Feb |
Mar |
Apr |
May |
Jun |
Jul |
Aug |
Sep |
Oct |
Nov |
Dec |
Annual |
| Heating Degree Days | 1128 | 972 | 818 | 507 | 221 | 32.0 | 0.0 | 6.0 | 72.0 | 321 | 591 | 973 | 5641 |
| Cooling Degree Days | 0.0 | 0.0 | 0.0 | 0.0 | 10.0 | 113 | 264 | 220 | 66.0 | 5.0 | 0.0 | 0.0 | 678 |
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| Boston Precipitation |
Jan |
Feb |
Mar |
Apr |
May |
Jun |
Jul |
Aug |
Sep |
Oct |
Nov |
Dec |
Annual |
| Precipitation (inches) | 3.6 | 3.6 | 3.7 | 3.6 | 3.3 | 3.1 | 2.8 | 3.2 | 3.1 | 3.3 | 4.2 | 4.0 | 41.5 |
| Days with Precipitation 0.01 inch or More | 12.0 | 10.0 | 12.0 | 11.0 | 12.0 | 11.0 | 9.0 | 10.0 | 9.0 | 9.0 | 11.0 | 12.0 | 127 |
| Monthly Snowfall (inches) | 12.8 | 11.8 | 8.0 | 0.9 | 0.0 | 0.0 | 0.0 | < 0.05 | 0.0 | 0.0 | 1.3 | 7.6 | 42.4 |
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| Other Boston Weather Indicators |
Jan |
Feb |
Mar |
Apr |
May |
Jun |
Jul |
Aug |
Sep |
Oct |
Nov |
Dec |
Annual |
| Average Wind Speed | 13.8 | 13.9 | 13.7 | 13.1 | 12.1 | 11.4 | 11.0 | 10.8 | 11.3 | 11.9 | 12.8 | 13.5 | 12.4 |
| Clear Days | 9.0 | 8.0 | 8.0 | 7.0 | 6.0 | 7.0 | 7.0 | 9.0 | 10.0 | 11.0 | 8.0 | 9.0 | 98.0 |
| Partly Cloudy Days | 7.0 | 7.0 | 8.0 | 8.0 | 10.0 | 10.0 | 12.0 | 11.0 | 8.0 | 8.0 | 7.0 | 7.0 | 103 |
| Cloudy Days | 15.0 | 13.0 | 15.0 | 15.0 | 15.0 | 13.0 | 12.0 | 11.0 | 12.0 | 12.0 | 15.0 | 15.0 | 164 |
| Percent of Possible Sunshine | 53.0 | 56.0 | 57.0 | 56.0 | 58.0 | 63.0 | 65.0 | 65.0 | 63.0 | 60.0 | 50.0 | 52.0 | 58.0 |
| Avg. Relative Humidity | 51.0 | 63.0 | 63.0 | 63.0 | 63.0 | 66.0 | 66.0 | 66.5 | 69.0 | 68.5 | 66.0 | 64.5 | 65.5 |
Weather information for other cities in Massachusetts