Lassen Volcanic National Park vs Mammoth Cave National Park in September

Lassen Volcanic National Park is the better pick in September — 94 vs 75 on SeasonMap's comfort score. Lassen Volcanic National Park is nice, a little rain, clean air, while Mammoth Cave National Park is hot, rainy, clean air.

Lassen Volcanic National Park vs Mammoth Cave National ParkSeptember climate, side by side

Lassen Volcanic National ParkMammoth Cave National Park
Comfort score94/100 (S)75/100 (B)
Feels-like high17°C32°C
Avg high / low20° / 8°30° / 16°
Rainfall35 mm107 mm
Rainy days56
Humidity47%69%
Air quality (AQI)4142

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

Lassen Volcanic National Park vs Mammoth Cave National Park in September — FAQ

Is September better in Lassen Volcanic National Park or Mammoth Cave National Park?
Lassen Volcanic National Park is the better pick in September — 94 vs 75 on SeasonMap's comfort score. Lassen Volcanic National Park is nice, a little rain, clean air, while Mammoth Cave National Park is hot, rainy, clean air.
What is the weather like in Lassen Volcanic National Park vs Mammoth Cave National Park in September?
In September, Lassen Volcanic National Park averages 20°C high / 8°C low with about 35 mm of rain; Mammoth Cave National Park averages 30°C high / 16°C low with about 107 mm.