Best Time to Visit Gateway Arch National Park
The best months to visit Gateway Arch National Park are April, September, October — computed from official NPS visitation (2021–2025 average), NOAA weather normals and daylight. July is the crowd peak (476,195 monthly visits); January is quietest at 11% of peak.
Monthly crowd curve
Average monthly recreation visits, 2021–2025 (NPS Visitor Use Statistics). Amber bar = current month.
Gateway Arch month by month
| Month | Verdict | Avg visits | % of peak | High / Low | Precip | Daylight |
|---|---|---|---|---|---|---|
| January | Shoulder | 51,776 | 11% | 40°F / 24°F | 2.5″ | 9.8h |
| February | Shoulder | 61,817 | 13% | 46°F / 28°F | 2.0″ | 10.8h |
| March | Shoulder | 166,103 | 35% | 56°F / 36°F | 3.3″ | 11.9h |
| April | Best window | 150,887 | 32% | 68°F / 46°F | 4.5″ | 13.2h |
| May | Shoulder | 170,789 | 36% | 77°F / 57°F | 4.8″ | 14.3h |
| June | Shoulder | 234,103 | 49% | 86°F / 65°F | 4.4″ | 14.9h |
| July | Peak crowds | 476,195 | 100% | 89°F / 69°F | 3.7″ | 14.6h |
| August | Shoulder | 217,260 | 46% | 88°F / 66°F | 3.7″ | 13.7h |
| September | Best window | 139,931 | 29% | 81°F / 57°F | 3.4″ | 12.5h |
| October | Best window | 125,733 | 26% | 69°F / 46°F | 3.1″ | 11.2h |
| November | Shoulder | 104,145 | 22% | 55°F / 36°F | 3.3″ | 10.1h |
| December | Shoulder | 93,014 | 20% | 44°F / 29°F | 2.3″ | 9.5h |
Crowds: NPS Visitor Use Statistics, mean of 2021–2025 (2020 excluded as a COVID-19 anomaly). Weather: NOAA 1991–2020 monthly normals, station CAHOKIA ST LOUIS AP, IL US (4 mi from park coordinates). Daylight: computed for the 15th of each month at the park's location. Methodology.
What to pack for Gateway Arch in April
Computed from April's weather normals — Gateway Arch's best month above. Visiting another month? Each month page has its own weather-computed list.
- Rain shell + pack cover — 4.5″ of precipitation is normal this month
- Sturdy broken-in footwear, navigation and a basic first-aid kit — every park, every month
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Common questions
What is the best month to visit Gateway Arch?
April, September, October rank best for Gateway Arch on VisitWhen's computed score — the strongest balance of low crowds (NPS data), comfortable weather (NOAA normals) and daylight.
What is the most crowded month at Gateway Arch?
July: an average of 476,195 recreation visits (NPS, 2021–2025). The quietest is January, at 11% of the July peak.
How many people visit Gateway Arch per year?
Gateway Arch National Park averaged 1,991,753 recreation visits per year over 2021–2025, per official NPS Visitor Use Statistics.
Dive into a month
Last verified 2026-09-12 · all parks