What is the weather like in Mammoth Cave National Park vs St. Louis in September?

In September, Mammoth Cave National Park averages 30°C high / 16°C low with about 107 mm of rain; St. Louis averages 29°C high / 15°C low with about 83 mm.

Mammoth Cave National Park vs St. Louis in September

St. Louis is the better pick in September — 85 vs 75 on SeasonMap's comfort score. St. Louis is hot, rainy, clean air, while Mammoth Cave National Park is hot, rainy, clean air.

Mammoth Cave National Park vs St. Louis — September climate, side by side

	🇺🇸 Mammoth Cave National Park	🇺🇸 St. Louis
Comfort score	75/100 (B)	85/100 (A)
Feels-like high	32°C	30°C
Avg high / low	30° / 16°	29° / 15°
Rainfall	107 mm	83 mm
Rainy days	6	5
Humidity	69%	67%
Air quality (AQI)	42	50

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

Month by month

Mammoth Cave National Park vs St. Louis in September — FAQ

Is September better in Mammoth Cave National Park or St. Louis?: St. Louis is the better pick in September — 85 vs 75 on SeasonMap's comfort score. St. Louis is hot, rainy, clean air, while Mammoth Cave National Park is hot, rainy, clean air.
What is the weather like in Mammoth Cave National Park vs St. Louis in September?: In September, Mammoth Cave National Park averages 30°C high / 16°C low with about 107 mm of rain; St. Louis averages 29°C high / 15°C low with about 83 mm.