How Crowded Is River Raisin in September?
September is an average month at River Raisin National Battlefield Park, running about 1.0× the park's average month — roughly 8% of the year's visitors come in September. That puts it between the July peak and the November low. Overall our best-time score rates September as "Excellent" for a visit. Typical September weather averages a high near 75°F and a low around 54°F. You'll get about 12.3 hours of daylight to explore.
Frequently Asked Questions
September is average at River Raisin National Battlefield Park (about 1.0× the average month). Our best-time score rates it "Excellent". The single best month overall is October.
The busiest month is July and the quietest is November. September sits at about 1.0× the park's average, or 8% of annual visitation.
Source: National Park Service Visitor Use Statistics (2011–2025), NOAA NCEI Climate Normals 1991–2020. Updated 2026-06-20.