What is the weather like in Joshua Tree National Park vs Zion National Park in September?

In September, Joshua Tree National Park averages 34°C high / 20°C low with about 8 mm of rain; Zion National Park averages 27°C high / 11°C low with about 19 mm.

Joshua Tree National Park vs Zion National Park in September

Zion National Park is the better pick in September — 89 vs 54 on SeasonMap's comfort score. Zion National Park is warm, dry, clean air, while Joshua Tree National Park is hot, dry, clean air.

Joshua Tree National Park vs Zion National Park — September climate, side by side

	🇺🇸 Joshua Tree National Park	🇺🇸 Zion National Park
Comfort score	54/100 (D)	89/100 (A)
Feels-like high	33°C	24°C
Avg high / low	34° / 20°	27° / 11°
Rainfall	8 mm	19 mm
Rainy days	1	2
Humidity	31%	33%
Air quality (AQI)	49	41

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

Month by month

Joshua Tree National Park vs Zion National Park in September — FAQ

Is September better in Joshua Tree National Park or Zion National Park?: Zion National Park is the better pick in September — 89 vs 54 on SeasonMap's comfort score. Zion National Park is warm, dry, clean air, while Joshua Tree National Park is hot, dry, clean air.
What is the weather like in Joshua Tree National Park vs Zion National Park in September?: In September, Joshua Tree National Park averages 34°C high / 20°C low with about 8 mm of rain; Zion National Park averages 27°C high / 11°C low with about 19 mm.