April is an excellent month at Gateway Arch — it ranks 2nd of the twelve here. Expect about 68% fewer visitors than July, the park's peak — 150,887 visits on average. Days run around 68°F by afternoon and 45°F at night, with 13.2 hours of daylight.
April against the park's best
| Month | Verdict | Avg. visits | vs. peak | High | Low | Snow | Daylight |
|---|---|---|---|---|---|---|---|
| April (this page) | Excellent | 150,887 | −68% | 68°F | 45°F | 0.3" | 13.2 h |
| October (best) | 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 April a good time to visit Gateway Arch?
Yes — it is one of the best months of the year here. April ranks 2 of 12 at Gateway Arch on crowds, weather, daylight, and access together.
How crowded is Gateway Arch in April?
About 150,887 recreation visits on average — 68% below July, the park's peak.
How warm is Gateway Arch in April?
Average highs around 68°F and lows around 45°F at the Cahokia station.
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