Grand Rapids (MI)
September
Weather in Grand Rapids, Michigan for September 2027
Your guide to Grand Rapids weather in September - trends and predictions
In general, the average temperature in Grand Rapids at the beginning of September is 26.4 °C. As the month progressed, temperatures tended to significantly cool down, reaching an average of 21.8 °C by the end of September.
Grand Rapids experiences moderate rainfall in September, with an average of 8 rainy days and a total precipitation of 167.5 mm.
Is September a good time to visit Grand Rapids? check out the best time to travel to Grand Rapids page.
✨ Is September a good time to visit Grand Rapids? – Ask the AI Weatherman
Temperatures
Rain 🌧️
More
22
Dry days
8
Rainy days
0
Snow days
24°/13°
Temperatures
18 km/h
Avg max wind
68 %
Avg humidity
Grand Rapids Weather September
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Temperatures trend during September in Grand Rapids
See the weather trend as well as the moving average line
September weather in Grand Rapids day by day
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| Date | Weather | Temperatures | Rain | UV | More |
|---|---|---|---|---|---|
| Sept. 1 |  Sunny | 29° /14° | 0 mm | 7 | |
| Sept. 2 | Sunny | 28° /15° | 0.5 mm | 6 | |
| Sept. 3 |  Moderate rain at times | 28° /16° | 9.6 mm | 6 | |
| Sept. 4 |  Heavy rain | 26° /15° | 78.2 mm | 6 | |
| Sept. 5 |  Patchy rain possible | 27° /16° | 1.1 mm | 6 | |
| Sept. 6 | Patchy rain possible | 24° /14° | 2.1 mm | 6 | |
| Sept. 7 |  Light rain | 24° /11° | 3.9 mm | 6 | |
| Sept. 8 | Sunny | 24° /12° | 0 mm | 5 | |
| Sept. 9 | Patchy rain possible | 25° /13° | 2.3 mm | 6 | |
| Sept. 10 |  Overcast | 26° /13° | 0.1 mm | 6 | |
| Sept. 11 | Light rain | 26° /14° | 4.4 mm | 6 | |
| Sept. 12 | Patchy rain possible | 25° /14° | 1.7 mm | 6 | |
| Sept. 13 |  Moderate rain | 23° /13° | 12.7 mm | 6 | |
| Sept. 14 | Light rain | 26° /12° | 3.1 mm | 6.5 | |
| Sept. 15 | Light rain | 27° /13° | 2.8 mm | 6 | |
| Sept. 16 | Sunny | 26° /14° | 0.1 mm | 6 | |
| Sept. 17 |  Partly cloudy | 26° /15° | 0.5 mm | 6 | |
| Sept. 18 | Overcast | 25° /14° | 0.7 mm | 5 | |
| Sept. 19 | Light rain | 25° /13° | 6.9 mm | 6 | |
| Sept. 20 | Light rain | 24° /15° | 4.9 mm | 5 | |
| Sept. 21 | Moderate rain | 23° /14° | 12.6 mm | 5 | |
| Sept. 22 | Light rain | 21° /13° | 8.2 mm | 4 | |
| Sept. 23 | Light rain | 22° /10° | 3.9 mm | 5 | |
| Sept. 24 |  Mist | 22° /11° | 0.4 mm | 5 | |
| Sept. 25 | Patchy rain possible | 20° /12° | 1.8 mm | 4 | |
| Sept. 26 | Patchy rain possible | 22° /10° | 1.3 mm | 5 | |
| Sept. 27 | Patchy rain possible | 22° /12° | 2.4 mm | 5 | |
| Sept. 28 | Sunny | 21° /11° | 0.2 mm | 5 | |
| Sept. 29 | Sunny | 23° /11° | 0 mm | 5.1 | |
| Sept. 30 | Patchy rain possible | 23° /12° | 1.4 mm | 5 | |
| Next | |||||
Important Notice
Our weather forecast for Grand Rapids in September is based on the analysis of historical data rather than real-time forecast models. While this provides a general overview, weather conditions can change. We recommend that you check the Grand Rapids forecast closer to your planned date for the most up-to-date weather information.
Change Month
Grand Rapids in September - FAQ
What are the expected maximum and minimum temperatures in Grand Rapids during September?
Enjoy moderate daytime temperatures of up to 24° and cooler nights around 13°. Ideal for a range of outdoor activities, from hiking to city tours.
How much rainfall should be expected in Grand Rapids during September?
Significant rainfall exceeding 167.5 mm is expected in Grand Rapids during September, occurring over more than 8 days. Preparing for wet conditions is recommended in your planning.
What are the typical wind conditions in Grand Rapids during September?
The average wind speed in Grand Rapids during September is 18 km/h, suggesting breezy to windy conditions, depending on your activities.
September rainfall patterns in Grand Rapids
Explore the daily rainfall trends and prepare for Grand Rapidss September weather 💧
Typically, Grand Rapids has 8 rainy days in September with a total of 167.5 mm of rainfall.
UV exposure in Grand Rapids during September
Stay informed about UV levels for safe outdoor activities throughout the month of September ☀️
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