Weather in Suffolk County, Massachusetts for September 2026
Rip Current Statement - See hour by hour.
Until now, September 2026 in Suffolk County 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 Suffolk County predicts temperatures to be around 16 °F, close to the historical average.
In general, the average temperature in Suffolk County at the beginning of September is 24.1 °F. As the month progressed, temperatures tended to significantly cool down, reaching an average of 16.3 °F by the end of September.
Suffolk County experiences moderate rainfall in September, with an average of 8 rainy days and a total precipitation of 150.3 mm.
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Suffolk County Weather September
Temperatures trend during September in Suffolk County
September weather in Suffolk County 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 | 5.3 | |
| Sept. 20 |  Light drizzle | 16° /11° | 6.2 mm | 0.9 | |
| Sept. 21 | Overcast | 17° /13° | 5.2 mm | 5.4 | |
| Sept. 22 | Overcast | 15° /13° | 0 mm | 2.5 | |
| Sept. 23 |  Patchy rain possible | 14° /13° | 1.2 mm | 3.2 | |
| Sept. 24 | Patchy rain possible | 15° /13° | 0.2 mm | 3 | |
| Sept. 25 | Patchy rain possible | 16° /14° | 1.5 mm | 4 | |
| Sept. 26 | Sunny | 17° /13° | 43.2 mm | 5 | |
| Sept. 27 | Light rain shower | 15° /13° | 5 mm | 3 | |
| 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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Suffolk County in September - FAQ
What are the expected maximum and minimum temperatures in Suffolk County during September?
How much rainfall should be expected in Suffolk County during September?
What are the typical wind conditions in Suffolk County during September?
September rainfall patterns in Suffolk County
UV exposure in Suffolk County during September
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Where is Suffolk County?Get accurate weather forecasts for Suffolk County, located at latitude 42.358 and longitude -71.06. Stay updated with localized weather information tailored for Suffolk County.