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 | 28.6 | 30.3 | 38.6 | 48.1 | 58.2 | 67.7 | 73.5 | 71.9 | 64.8 | 54.8 | 45.3 | 33.6 | 51.3 |
| Avg. Max Temperature | 35.7 | 37.5 | 45.8 | 55.9 | 66.6 | 76.3 | 81.8 | 79.8 | 72.8 | 62.7 | 52.2 | 40.4 | 59.0 |
| Avg. Min Temperature | 21.6 | 23.0 | 31.3 | 40.2 | 49.8 | 59.1 | 65.1 | 64.0 | 56.8 | 46.9 | 38.3 | 26.7 | 43.6 |
| Days with Max Temp of 90 F 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