September is a good month at Arches — it ranks 9th of the twelve here. Expect about 16% fewer visitors than May, the park's peak — 163,421 visits on average. Days run around 88°F by afternoon and 55°F at night, with 12.4 hours of daylight.
September against the park's best
| Month | Verdict | Avg. visits | vs. peak | High | Low | Snow | Daylight |
|---|---|---|---|---|---|---|---|
| September (this page) | Good | 163,421 | −16% | 88°F | 55°F | 0" | 12.4 h |
| February (best) | Excellent | 49,974 | −74% | 52°F | 27°F | 1.4" | 10.7 h |
| May (peak crowds) | Good | 195,001 | peak | 83°F | 51°F | 0" | 14.3 h |
Weather figures are for the Moab area — the Moab station. Visits are 2021–2025 averages; climate normals cover 1991–2020. Conditions vary across the park; check current status before you go.
Common questions
Is September a good time to visit Arches?
It is a reasonable month — the park has stronger ones, but the records don't argue against it. September ranks 9 of 12 at Arches on crowds, weather, daylight, and access together.
How crowded is Arches in September?
About 163,421 recreation visits on average — 16% below May, the park's peak.
How warm is Arches in September?
Average highs around 88°F and lows around 55°F at the Moab station.
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