Weather in Grand Rapids, Michigan for September 2025
Until now, September 2025 in Grand Rapids is cooler than usual, with temperatures averaging 22.8 °F, this is -3.1 °F below the typical seasonal average.
The forecast for the coming days of September 2025 predicts a temperature of 30.4 °F , which is warmer than usual.
In general, the average temperature in Grand Rapids at the beginning of September is 26.1 °F. As the month progressed, temperatures tended to moderately fall, reaching an average of 24.6 °F by the end of September.
The climate of Grand Rapids in September is notably wet, with an average of 14 rainy days, and a total of 58.1 mm of precipitation.
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Grand Rapids Weather September
Temperatures trend during September in Grand Rapids
September weather in Grand Rapids day by day
| Date | Weather | Temperatures | Rain | UV | More |
|---|---|---|---|---|---|
| Sept. 1 |  Sunny | 28° /12° | 0 mm | 7 | |
| Sept. 2 | Sunny | 28° /13° | 0 mm | 7 | |
| Sept. 3 |  Moderate rain at times | 27° /14° | 2.1 mm | 6 | |
| Sept. 4 | Sunny | 25° /14° | 0.4 mm | 6 | |
| Sept. 5 |  Cloudy | 27° /15° | 0.1 mm | 6 | |
| Sept. 6 |  Light rain shower | 24° /14° | 2.5 mm | 6 | |
| Sept. 7 | Moderate or heavy rain shower | 24° /11° | 4.7 mm | 6 | |
| Sept. 8 | Sunny | 23° /11° | 0 mm | 6 | |
| Sept. 9 | Sunny | 26° /11° | 0 mm | 6 | |
| Sept. 10 | Patchy rain possible | 27° /13° | 0.1 mm | 6 | |
| Sept. 11 | Sunny | 26° /14° | 5.3 mm | 6 | |
| Sept. 12 | Moderate rain at times | 25° /13° | 2.1 mm | 6 | |
| Sept. 13 | Moderate or heavy rain shower | 24° /12° | 5 mm | 6 | |
| Sept. 14 |  Partly cloudy | 32° /14° | 0 mm | 1.5 | |
| Sept. 15 |  Mist | 30° /15° | 0 mm | 1.4 | |
| Sept. 16 | Mist | 28° /14° | 0 mm | 1.4 | |
| Sept. 17 | Sunny | 34° /15° | 0 mm | 1.4 | |
| Sept. 18 | Sunny | 35° /16° | 0 mm | 0 | |
| Sept. 19 | Sunny | 35° /16° | 0 mm | 6 | |
| Sept. 20 | Sunny | 34° /14° | 0 mm | 6 | |
| Sept. 21 | Sunny | 34° /15° | 0 mm | 6 | |
| Sept. 22 | Partly cloudy | 30° /18° | 0.1 mm | 6 | |
| Sept. 23 | Patchy rain possible | 27° /16° | 0.3 mm | 5 | |
| Sept. 24 | Mist | 31° /17° | 0 mm | 5 | |
| Sept. 25 | Patchy rain possible | 21° /19° | 3.3 mm | 4 | |
| Sept. 26 | Patchy rain possible | 25° /14° | 1.3 mm | 4 | |
| Sept. 27 | Sunny | 30° /11° | 0 mm | 5 | |
| Sept. 28 | Patchy rain possible | 20° /11° | 0.2 mm | 5 | |
| Sept. 29 | Sunny | 22° /11° | 0 mm | 6 | |
| Sept. 30 | Partly cloudy | 23° /11° | 0 mm | 6 | |
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Grand Rapids in September - FAQ
September rainfall patterns in Grand Rapids
UV exposure in Grand Rapids during September
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Where is Grand Rapids?Get accurate weather forecasts for Grand Rapids, located at latitude 42.963 and longitude -85.668. Stay updated with localized weather information tailored for Grand Rapids.