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The temperatures in Massachusetts in September are comfortable with low of 15°C and and high up to 24°C.
You can expect about 3 to 8 days of rain in Massachusetts during the month of September. It’s a good idea to bring along your umbrella so that you don’t get caught in poor weather.
Our weather forecast can give you a great sense of what weather to expect in Massachusetts in September 2025.
If you’re planning to visit Massachusetts in the near future, we highly recommend that you review the 14 day weather forecast for Massachusetts before you arrive.
| Month | Temperatures | Rainy Days | Dry Days | Snowy Days | Rainfall | Weather | More details |
|---|---|---|---|---|---|---|---|
| January | 1° / -5° | 6 | 15 | 10 | 119 mm | Awful | Massachusetts in January |
| February | 2° / -4° | 6 | 12 | 10 | 131 mm | Awful | Massachusetts in February |
| March | 7° / 0° | 7 | 15 | 8 | 149 mm | Awful | Massachusetts in March |
| April | 13° / 5° | 8 | 20 | 2 | 133 mm | Awful | Massachusetts in April |
| May | 20° / 10° | 7 | 24 | 0 | 100 mm | Ok | Massachusetts in May |
| June | 24° / 15° | 7 | 23 | 0 | 120 mm | Good | Massachusetts in June |
| July | 28° / 19° | 7 | 24 | 0 | 119 mm | Good | Massachusetts in July |
| August | 28° / 19° | 4 | 27 | 0 | 99 mm | Perfect | Massachusetts in August |
| September | 24° / 15° | 4 | 26 | 0 | 79 mm | Perfect | Massachusetts in September |
| October | 17° / 10° | 6 | 25 | 0 | 134 mm | Good | Massachusetts in October |
| November | 10° / 4° | 6 | 22 | 2 | 111 mm | Bad | Massachusetts in November |
| December | 5° / -1° | 7 | 17 | 7 | 143 mm | Awful | Massachusetts in December |
For a more accurate weather forecast please select a city