Grand Canyon National Park vs Zion National Park in September

Zion National Park is the better pick in September — 89 vs 52 on SeasonMap's comfort score. Zion National Park is warm, dry, clean air, while Grand Canyon National Park is hot, dry, clean air.

Grand Canyon National Park vs Zion National ParkSeptember climate, side by side

Grand Canyon National ParkZion National Park
Comfort score52/100 (D)89/100 (A)
Feels-like high33°C24°C
Avg high / low35° / 19°27° / 11°
Rainfall14 mm19 mm
Rainy days22
Humidity34%33%
Air quality (AQI)3841

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

Grand Canyon National Park vs Zion National Park in September — FAQ

Is September better in Grand Canyon National Park or Zion National Park?
Zion National Park is the better pick in September — 89 vs 52 on SeasonMap's comfort score. Zion National Park is warm, dry, clean air, while Grand Canyon National Park is hot, dry, clean air.
What is the weather like in Grand Canyon National Park vs Zion National Park in September?
In September, Grand Canyon National Park averages 35°C high / 19°C low with about 14 mm of rain; Zion National Park averages 27°C high / 11°C low with about 19 mm.