September is a good month at Grand Canyon — it ranks first of the twelve here. Expect about 19% fewer visitors than July, the park's peak — 429,427 visits on average. Days run around 76°F by afternoon and 44°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 | 429,427 | −19% | 76°F | 44°F | 0" | 12.4 h |
| July (peak crowds) | Good | 531,134 | peak | 85°F | 50°F | 0" | 14.4 h |
Weather figures are for the South Rim area (about 7,000 ft — the canyon floor runs 20–25°F hotter) — the Grand Canyon NP 2 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 Grand Canyon?
Yes — it is the park's best-scoring month. September ranks 1 of 12 at Grand Canyon on crowds, weather, daylight, and access together.
How crowded is Grand Canyon in September?
About 429,427 recreation visits on average — 19% below July, the park's peak.
How warm is Grand Canyon in September?
Average highs around 76°F and lows around 44°F at the Grand Canyon NP 2 station.
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