What is the weather like in Gateway Arch National Park vs Mammoth Cave National Park in August?

In August, Gateway Arch National Park averages 31°C high / 19°C low with about 115 mm of rain; Mammoth Cave National Park averages 32°C high / 19°C low with about 106 mm.

Gateway Arch National Park vs Mammoth Cave National Park in August

Gateway Arch National Park is the better pick in August — 66 vs 59 on SeasonMap's comfort score. Gateway Arch National Park is sweltering, rainy, while Mammoth Cave National Park is sweltering, rainy.

Gateway Arch National Park vs Mammoth Cave National Park — August climate, side by side

	🇺🇸 Gateway Arch National Park	🇺🇸 Mammoth Cave National Park
Comfort score	66/100 (C)	59/100 (D)
Feels-like high	34°C	35°C
Avg high / low	31° / 19°	32° / 19°
Rainfall	115 mm	106 mm
Rainy days	8	9
Humidity	71%	72%
Air quality (AQI)	64	55

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

Month by month

Gateway Arch National Park vs Mammoth Cave National Park in August — FAQ

Is August better in Gateway Arch National Park or Mammoth Cave National Park?: Gateway Arch National Park is the better pick in August — 66 vs 59 on SeasonMap's comfort score. Gateway Arch National Park is sweltering, rainy, while Mammoth Cave National Park is sweltering, rainy.
What is the weather like in Gateway Arch National Park vs Mammoth Cave National Park in August?: In August, Gateway Arch National Park averages 31°C high / 19°C low with about 115 mm of rain; Mammoth Cave National Park averages 32°C high / 19°C low with about 106 mm.