Gateway Arch
Gateway Arch National Park commemorates President Jefferson’s vision of a continental nation, the individuals and cultural groups who helped shape its history, St. Louis’ role in westward expansion, and Dred and Harriet Scott, who sued for their freedom in the Old Courthouse.
Official-source overview · detailed planning coverage is still being reviewed
At a glance
- State / territory
- Missouri, Illinois
- Region
- Midwest
The official overview below is available now. Park-specific fees, distances, climate tables, and reviewed day plans are shown only when their supporting records have been reviewed. Check current access and arrangements with the park before travel.
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When to go
Normal Daily Mean Temperature (in degrees Fahrenheit)*
January - 29.3
February - 33.9
March - 45.1
April - 56.7
May - 66.1
June - 75.4
July - 79.8
August - 77.6
September - 70.2
October - 58.4
November - 46.2
December - 33.9
Average Percent of Days with Sunshine*
January - 50%
February - 52%
March - 54%
April - 56%
May - 59%
June - 66%
July - 68%
August - 65%
September - 63%
October - 60%
November - 46%
December - 53%
*Source: National Oceanic and Atmospheric Administration
General official weather guidance; historical context, not a forecast.
Arrive and stay
For directions click on the provided link
Official directionsRisks and official checks
Conditions, access, reservations, and operating hours can change. This website is a planning resource and does not provide live conditions.
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Where this information comes from
Park overview information is drawn from identified official sources. Published guide facts, assumptions, and editorial decisions retain their own review records.
Source retrieved: 2026-10-01. This is not a live-conditions check.
National Park Service: Gateway Arch
Image credit: NPS Photo/Sue Ford. See the image credits.
Data release 0 · Independent planning resource. Not affiliated with the National Park Service.