October is an excellent month at Gateway Arch — it ranks first of the twelve here. Expect about 74% fewer visitors than July, the park's peak — 125,733 visits on average. Days run around 70°F by afternoon and 46°F at night, with 11.1 hours of daylight.
October against the park's best
| Month | Verdict | Avg. visits | vs. peak | High | Low | Snow | Daylight |
|---|---|---|---|---|---|---|---|
| October (this page) | Excellent | 125,733 | −74% | 70°F | 46°F | 0" | 11.1 h |
| July (peak crowds) | Tough | 476,195 | peak | 89°F | 69°F | 0" | 14.6 h |
Weather figures are for downtown St. Louis — the Cahokia 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 October a good time to visit Gateway Arch?
Yes — it is the park's best-scoring month. October ranks 1 of 12 at Gateway Arch on crowds, weather, daylight, and access together.
How crowded is Gateway Arch in October?
About 125,733 recreation visits on average — 74% below July, the park's peak.
How warm is Gateway Arch in October?
Average highs around 70°F and lows around 46°F at the Cahokia station.
← Gateway Arch in September · All months at Gateway Arch · Gateway Arch in November →