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

In September, Louisville averages 28°C high / 17°C low with about 106 mm of rain; St. Louis averages 29°C high / 15°C low with about 83 mm.

Louisville vs St. Louis in September

Louisville and St. Louis are nearly tied in September — 83 vs 85 on SeasonMap's comfort score. Louisville is hot, rainy, clean air; St. Louis is hot, rainy, clean air.

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

	🇺🇸 Louisville	🇺🇸 St. Louis
Comfort score	83/100 (A)	85/100 (A)
Feels-like high	30°C	30°C
Avg high / low	28° / 17°	29° / 15°
Rainfall	106 mm	83 mm
Rainy days	7	5
Humidity	71%	67%
Air quality (AQI)	43	50

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

Month by month

Louisville vs St. Louis in September — FAQ

Is September better in Louisville or St. Louis?: Louisville and St. Louis are nearly tied in September — 83 vs 85 on SeasonMap's comfort score. Louisville is hot, rainy, clean air; St. Louis is hot, rainy, clean air.
What is the weather like in Louisville vs St. Louis in September?: In September, Louisville averages 28°C high / 17°C low with about 106 mm of rain; St. Louis averages 29°C high / 15°C low with about 83 mm.