Gateway Arch · August
Gateway Arch in August
August is a good time to visit Gateway Arch — quieter than July, busier than September.
Crowd score
How busy it gets
A comfortable middle ground: some company on popular trails, but no gridlock.
About 55% of this park's busiest month.
Source: NPS Visitor Use Statistics, 2023–2025
Data: NPS visitation 2023–2025 · crowd scores computed Jul 2026. How this is calculated →
Computed from federal data · Methodology by Sharon Ben-Moshe
Visitation
Typical August visits vs. the year
Typical monthly recreation visits, averaged over the most recent three full years.
Source: NPS Visitor Use Statistics, 2023–2025
Weather
August weather
- Avg high
- 87°F
- Avg low
- 67°F
- Precipitation
- 3.1"
- Sunrise
- 5:15 AM
- Sunset
- 6:54 PM
- Daylight
- 13.7h
Source: NOAA 1991–2020 climate normals, CAHOKIA, IL US
What's open
Gateway Arch in August: access
The Gateway Arch is open year-round, closed only on Thanksgiving, Christmas, and New Year’s Day. Summer Hours (9am-6pm, Sunday through Thursday and 9am-8pm Friday and Saturday) run the Friday before Memorial Day through Labor Day weekend and are the primary visitor season. During Regular Hours (the day after Labor Day through Friday before Memorial Day) we are open from 9am to 6pm. Around the holidays we occasionally have extended hours.
No seasonal road or area closures reported for this park.
Source: NPS Data API
Conditions
Current alerts
No current alerts or closures reported for this park.
Source: NPS Data API
Context
Gateway Arch crowds across the year
FAQ
Gateway Arch in August
How busy is Gateway Arch in August?
August rates 6/10 for crowds (Moderate) at Gateway Arch National Park — about 55% of its busiest month. Typical recreation visits: 271,608.
What is the weather like at Gateway Arch in August?
In August, Gateway Arch averages a high of 87°F and a low of 67°F, with about 3.1 inches of precipitation.