September in Grand Rapids, MI: shoulder season for golf — playable with smart tee time selection. Best tee times: mid-morning through early afternoon.
| Average September Weather | |
|---|---|
| Avg daily high | 75°F |
| Avg daily low | 58°F |
| Rainy days | 12 / mo |
| Avg peak wind | 10.2 mph |
Based on 10 years of climate data (2015–2024), September in Grand Rapids, MI averages 75°F highs and 58°F lows. Expect about 12 days with measurable precipitation and peak winds averaging 10.2 mph. Our playability scoring treats wind under 8 mph as ideal, temperatures of 60–80°F as optimal, and rain probability below 20% as a green light — use these averages to gauge how often September hits those thresholds.
For Grand Rapids in September, plan to mid-morning through early afternoon. Wind typically rises through the afternoon as thermal mixing builds, so earlier rounds tend to score higher on our playability scale.
Climate normals show the long-term picture, but day-to-day weather varies. Check today's live golf weather score for Grand Rapids, MI for the current playability rating, hourly wind, temperature, and the recommended tee time window.
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