Weather in Massachusetts for September 2026
Rip Current Statement - See hour by hour.
Until now, September 2026 in Massachusetts has been nearly identical to the historical average, with a temperature of 23.9 °F (showing only a slight deviation of 0.2 °F).
The forecast for the next days in Massachusetts predicts temperatures to be around 16 °F, close to the historical average.
In general, the average temperature in Massachusetts at the beginning of September is 24.1 °F. As the month progressed, temperatures tended to significantly cool down, reaching an average of 16.4 °F by the end of September.
Massachusetts experiences moderate rainfall in September, with an average of 8 rainy days and a total precipitation of 150.3 mm.
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Massachusetts Weather September
What’s the Weather Like in Massachusetts This September?
Temperatures trend during September in Massachusetts
September weather in Massachusetts day by day
| Date | Weather | Temperatures | Rain | UV | More |
|---|---|---|---|---|---|
| Sept. 1 |  Sunny | 23° /16° | 32.1 mm | 5 | |
| Sept. 2 |  Overcast | 23° /14° | 7.7 mm | 5 | |
| Sept. 3 |  Partly cloudy | 25° /14° | 1.8 mm | 6 | |
| Sept. 4 | Sunny | 26° /15° | 0 mm | 6 | |
| Sept. 5 | Sunny | 24° /15° | 5.1 mm | 6 | |
| Sept. 6 | Overcast | 23° /17° | 13.6 mm | 5 | |
| Sept. 7 | Partly cloudy | 25° /14° | 6.2 mm | 6 | |
| Sept. 8 | Sunny | 26° /14° | 0.1 mm | 6 | |
| Sept. 9 | Sunny | 25° /16° | 7.1 mm | 5 | |
| Sept. 10 | Sunny | 25° /16° | 3.4 mm | 6 | |
| Sept. 11 | Sunny | 25° /14° | 0.8 mm | 6 | |
| Sept. 12 | Sunny | 25° /15° | 4.8 mm | 6 | |
| Sept. 13 | Overcast | 24° /16° | 8.6 mm | 5 | |
| Sept. 14 |  Cloudy | 24° /15° | 0 mm | 6 | |
| Sept. 15 | Overcast | 22° /14° | 0 mm | 6 | |
| Sept. 16 |  Heavy rain at times | 22° /13° | 1.9 mm | 5 | |
| Sept. 17 | Partly cloudy | 22° /14° | 0.3 mm | 5 | |
| Sept. 18 | Overcast | 23° /16° | 4 mm | 5 | |
| Sept. 19 | Overcast | 17° /12° | 0 mm | 5.8 | |
| Sept. 20 | Overcast | 15° /11° | 8.1 mm | 1.8 | |
| Sept. 21 |  Light drizzle | 16° /14° | 3.4 mm | 5 | |
| Sept. 22 | Overcast | 15° /13° | 0.1 mm | 3 | |
| Sept. 23 |  Patchy rain possible | 16° /14° | 1.1 mm | 4 | |
| Sept. 24 | Light rain shower | 15° /13° | 18.6 mm | 3 | |
| Sept. 25 | Light rain shower | 14° /11° | 5.3 mm | 3 | |
| Sept. 26 | Sunny | 17° /12° | 0 mm | 5 | |
| Sept. 27 | Sunny | 18° /13° | 0 mm | 5 | |
| Sept. 28 | Overcast | 16° /14° | 0 mm | 5 | |
| Sept. 29 | Overcast | 18° /13° | 0 mm | 4 | |
| Sept. 30 | Sunny | 17° /13° | 0 mm | 5 | |
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Massachusetts in September - FAQ
What are the expected maximum and minimum temperatures in Massachusetts during September?
How much rainfall should be expected in Massachusetts during September?
What are the typical wind conditions in Massachusetts during September?
September rainfall patterns in Massachusetts
UV exposure in Massachusetts during September
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