What is the weather like in Arches National Park vs Las Vegas in September?

In September, Arches National Park averages 29°C high / 13°C low with about 17 mm of rain; Las Vegas averages 36°C high / 23°C low with about 6 mm.

Arches National Park vs Las Vegas in September

Arches National Park is the better pick in September — 84 vs 61 on SeasonMap's comfort score. Arches National Park is warm, dry, clean air, while Las Vegas is sweltering, dry, clean air.

Arches National Park vs Las Vegas — September climate, side by side

	🇺🇸 Arches National Park	🇺🇸 Las Vegas
Comfort score	84/100 (A)	61/100 (C)
Feels-like high	26°C	34°C
Avg high / low	29° / 13°	36° / 23°
Rainfall	17 mm	6 mm
Rainy days	3	1
Humidity	31%	25%
Air quality (AQI)	39	44

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

Month by month

Arches National Park vs Las Vegas in September — FAQ

Is September better in Arches National Park or Las Vegas?: Arches National Park is the better pick in September — 84 vs 61 on SeasonMap's comfort score. Arches National Park is warm, dry, clean air, while Las Vegas is sweltering, dry, clean air.
What is the weather like in Arches National Park vs Las Vegas in September?: In September, Arches National Park averages 29°C high / 13°C low with about 17 mm of rain; Las Vegas averages 36°C high / 23°C low with about 6 mm.