Gateway Arch National Park in April
In April, Gateway Arch National Park averages a high of 68°F and a low of 46°F, with 4.5 inches of precipitation (rain plus melted snow). About 197,000 people visit, the 6th busiest of 12 (moderate). Days are 13 hours 09 minutes long.
- Quiet
- Moderate
- Busy
- Very busy
- Few or no visits (may be closed)
- Best months
- High / low
- 68° / 46°F
- Precipitation
- 4.5in
- Snow
- –in
- Daylight
- 13h 9m
- Visitors
- 197,000
- Crowds
- Moderate
Best months for weather and crowds instead: March (moderate), October (quiet) and November (quiet).
Weather 1991–2020 averages at Cahokia St Louis AP, IL, 3.7 miles from the park's center, 413 ft. Visitors National Park Service recreation visits, average of 2023–2025. Updated .
Other parks in April
| Park | High / low °F | Crowds | Weather |
|---|---|---|---|
| Ozark National Scenic Riverways | 71° / 40° | Quiet | Mild, wet |
| Mammoth Cave National Park | 73° / 48° | Busy | Mild, wet |
| Buffalo National River | 66° / 44° | Moderate | Mild, wet |
| Indiana Dunes National Park | 57° / 40° | Moderate | Mild |
| Hot Springs National Park | 74° / 51° | Busy | Mild, wet |
Closures, reservations and alerts: Gateway Arch National Park on nps.gov
All twelve months at Gateway Arch · National parks to visit in April