Gateway Arch · September · Missouri
Gateway Arch National Park in September
September is a prime month to visit Gateway Arch National Park. Expect peak crowds. Highs average 80°F and lows 62°F, with about 3.61 inches of rain.
September gets a prime rating at Gateway Arch. The very best months are Mar–May, Sep–Nov.
Prime season starts
What to expect
September is prime at Gateway Arch. Comfortable riverfront weather and easier tram tickets.
Buy tram tickets online in advance, especially in summer and on weekends. The capsules are small; skip it if you're very claustrophobic.
Good to know
- Best months overall: Mar–May, Sep–Nov.
- Closest airport: St. Louis (STL), about 25 minutes.
- Before you go: The park grounds and museum are free. The tram requires a ticket. Check current conditions on nps.gov.
Questions
Is September a good time to visit Gateway Arch National Park?
September is a prime month to visit Gateway Arch National Park. Expect peak crowds. Highs average 80°F and lows 62°F, with about 3.61 inches of rain.
What is the weather like in Gateway Arch National Park in September?
Highs average 80°F and lows 62°F, with about 3.61 inches of rain. September is rated prime for visiting.
How crowded is Gateway Arch National Park in September?
September brings peak crowds to Gateway Arch National Park. Go early in the day and book lodging ahead.