Grand Rapids
September
Weather in Grand Rapids for September 2025
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 27.1 °F. As the month progressed, temperatures tended to significantly cool down, reaching an average of 21.6 °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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Temperatures
Rain 🌧️
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16
Dry days
14
Rainy days
0
Snow days
25°/13°
Temperatures
18 km/h
Avg max wind
67 %
Avg humidity
Grand Rapids in September average weather
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| Mon. | Tue. | Wed. | Thu. | Fri. | Sat. | Sun. |
|---|---|---|---|---|---|---|
| 1  28° | 2 28° | 3  28° | 4 27° | 5  29° | 6  26° | 7  24° |
| 8 24° | 9 26° | 10 27° | 11 25° | 12 25° | 13 24° | 14 26° |
| 15 28° | 16 27° | 17 28° | 18  25° | 19 27° | 20 26° | 21 26° |
| 22 22° | 23 21° | 24 22° | 25  21° | 26 22° | 27 21° | 28 20° |
| 29 22° | 30 23° |
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Temperatures trend during September in Grand Rapids
See the weather trend as well as the moving average line
September weather day by day
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| Date | Weather | Temperatures | Rain | UV | More |
|---|---|---|---|---|---|
| Sept. 1 | Sunny | 28° /12° | 0 mm | 7 | |
| Sept. 2 | Sunny | 28° /13° | 0 mm | 7 | |
| Sept. 3 | Partly cloudy | 28° /15° | 0.3 mm | 7 | |
| Sept. 4 | Sunny | 27° /15° | 0.4 mm | 7 | |
| Sept. 5 | Cloudy | 29° /16° | 0.2 mm | 7 | |
| Sept. 6 | Light rain shower | 26° /14° | 3.1 mm | 6 | |
| Sept. 7 | Moderate or heavy rain shower | 24° /11° | 4.7 mm | 6 | |
| Sept. 8 | Sunny | 24° /12° | 0 mm | 6 | |
| Sept. 9 | Sunny | 26° /11° | 0 mm | 7 | |
| Sept. 10 | Patchy rain possible | 27° /12° | 0.1 mm | 7 | |
| Sept. 11 | Sunny | 25° /14° | 6.6 mm | 6 | |
| Sept. 12 | Moderate rain at times | 25° /14° | 2.6 mm | 6 | |
| Sept. 13 | Moderate or heavy rain shower | 24° /12° | 5 mm | 6 | |
| Sept. 14 | Sunny | 26° /12° | 4.6 mm | 7 | |
| Sept. 15 | Partly cloudy | 28° /12° | 0 mm | 7 | |
| Sept. 16 | Sunny | 27° /14° | 0.1 mm | 7 | |
| Sept. 17 | Partly cloudy | 28° /15° | 0.3 mm | 6 | |
| Sept. 18 | Overcast | 25° /14° | 1 mm | 6 | |
| Sept. 19 | Partly cloudy | 27° /12° | 0.2 mm | 7 | |
| Sept. 20 | Moderate or heavy rain shower | 26° /15° | 5.8 mm | 6 | |
| Sept. 21 | Moderate or heavy rain shower | 26° /14° | 4.5 mm | 6 | |
| Sept. 22 | Patchy rain possible | 22° /12° | 3.5 mm | 5 | |
| Sept. 23 | Partly cloudy | 21° /9° | 5.9 mm | 6 | |
| Sept. 24 | Partly cloudy | 22° /10° | 0.5 mm | 5 | |
| Sept. 25 | Mist | 21° /11° | 2.8 mm | 5 | |
| Sept. 26 | Partly cloudy | 22° /10° | 1.9 mm | 5 | |
| Sept. 27 | Sunny | 21° /12° | 3.6 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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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.
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 25° 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?
Moderate rainfall is anticipated in Grand Rapids during September, with a total of 58.1 mm spread over approximately 14 days. Considering plans for rainy days is advisable.
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 💧
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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