What is the weather like in Detroit vs St. Louis in September?

In September, Detroit averages 25°C high / 16°C low with about 88 mm of rain; St. Louis averages 29°C high / 15°C low with about 83 mm.

Detroit vs St. Louis in September

Detroit is the better pick in September — 90 vs 85 on SeasonMap's comfort score. Detroit is warm, rainy, clean air, while St. Louis is hot, rainy, clean air.

Detroit vs St. Louis — September climate, side by side

	🇺🇸 Detroit	🇺🇸 St. Louis
Comfort score	90/100 (S)	85/100 (A)
Feels-like high	24°C	30°C
Avg high / low	25° / 16°	29° / 15°
Rainfall	88 mm	83 mm
Rainy days	6	5
Humidity	73%	67%
Air quality (AQI)	45	50

Monthly climate normals (ERA5 reanalysis). Comfort scores are SeasonMap estimates.

Month by month

Detroit 🇺🇸 United Stateswarm, rainy, clean air · best September90
St. Louis 🇺🇸 United Stateshot, rainy, clean air · best May85

Detroit vs St. Louis in September — FAQ

Is September better in Detroit or St. Louis?: Detroit is the better pick in September — 90 vs 85 on SeasonMap's comfort score. Detroit is warm, rainy, clean air, while St. Louis is hot, rainy, clean air.
What is the weather like in Detroit vs St. Louis in September?: In September, Detroit averages 25°C high / 16°C low with about 88 mm of rain; St. Louis averages 29°C high / 15°C low with about 83 mm.