Climate of Massachusetts, USA
Area-weighted average across Massachusetts. For where people actually live and travel, see the cities below.
Massachusetts, a subdivision of United States of America, has a strongly continental climate on average. Area-weighted monthly temperatures across the whole territory range from -4.5°C / 23.9°F in January to 21.1°C / 70°F in July, with rainfall from 87 mm / 3.4 in to 110 mm / 4.3 in depending on the season (1174 mm / 46.2 in total across the year). See the 2 cities listed below for point-value climate at specific locations — these often differ from the area-weighted average, especially in geographically diverse subdivisions.
| Month | Temperature | Rainfall | Matches |
|---|---|---|---|
| January | -4.5°C23.9°F | 96 mm3.8″ | Snowy |
| February | -3.5°C25.7°F | 87 mm3.4″ | Snowy |
| March | 1.3°C34.3°F | 99 mm3.9″ | Snowy |
| April | 7°C44.6°F | 101 mm4″ | — |
| May | 13.1°C55.6°F | 99 mm3.9″ | — |
| June | 17.9°C64.2°F | 96 mm3.8″ | — |
| July | 21.1°C70°F | 93 mm3.7″ | — |
| August | 20.5°C68.9°F | 99 mm3.9″ | — |
| September | 16.2°C61.2°F | 94 mm3.7″ | — |
| October | 10.1°C50.2°F | 97 mm3.8″ | — |
| November | 4.9°C40.8°F | 110 mm4.3″ | — |
| December | -1.1°C30°F | 103 mm4.1″ | Snowy |
Frequently asked questions
What is the best time to visit Massachusetts?
Massachusetts, United States of America does not have a clear sunny-and-dry window by our cutoffs. The warmest month is July at 21.1°C / 70°F, and the driest is February at 87 mm / 3.4 in — likely your best travel window. For city-level detail, see the cities section below.
What is the climate of Massachusetts?
Massachusetts, United States of America has area-weighted monthly average temperatures ranging from -4.5°C / 23.9°F in January to 21.1°C / 70°F in July. Annual rainfall averages about 1174 mm / 46.2 in, with the wettest month being November (110 mm / 4.3 in) and the driest February (87 mm / 3.4 in). Because this is an area average across the whole subdivision, local city values can differ substantially.
What is the hottest month in Massachusetts?
The hottest month in Massachusetts is July, with an area-wide average temperature of 21.1°C / 70°F.
What is the coldest month in Massachusetts?
The coldest month in Massachusetts is January, with an area-wide average temperature of -4.5°C / 23.9°F.
When does it rain most in Massachusetts?
The wettest month in Massachusetts is November, averaging about 110 mm / 4.3 in of rainfall. The driest is February with about 87 mm / 3.4 in.