Best time to visit Gateway Arch National Park
March, October and November are the best balance at Gateway Arch: mild and dry for the park (average highs 55° to 69°F), with crowds from quiet to moderate. July is busiest, with about 491,000 visitors. January is the quietest, with highs near 40°F.
- Quiet
- Moderate
- Busy
- Very busy
- Few or no visits (may be closed)
- Best months
Month by month
- Station
- Cahokia St Louis AP, IL USW00003960
- Lat / lon
- 38.57, -90.16
- Elevation
- 413 ft
- From park center
- 3.7 mi
- Normals
- 1991–2020
- Visits
- 2023–2025
| Field | Jan | Feb | Marbest | Apr | May | Jun | Jul | Aug | Sep | Octbest | Novbest | Dec | Year |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| High, °F | 40° | 46° | 56° | 68° | 77° | 86° | 89° | 88° | 81° | 69° | 55° | 44° | 67° |
| Low, °F | 24° | 28° | 36° | 46° | 57° | 65° | 69° | 66° | 57° | 46° | 36° | 29° | 46° |
| Precipitation, in | 2.5 | 2.0 | 3.3 | 4.5 | 4.8 | 4.4 | 3.7 | 3.7 | 3.4 | 3.1 | 3.3 | 2.3 | 40.8 |
| Snow, in | – | – | – | – | – | – | – | – | – | – | – | – | – |
| Daylight, h:mm | 9:44 | 10:41 | 11:50 | 13:09 | 14:15 | 14:51 | 14:37 | 13:40 | 12:23 | 11:07 | 10:01 | 9:29 | |
| Visitors, thousands | 65 | 83 | 219 | 197 | 222 | 297 | 491 | 272 | 171 | 144 | 124 | 114 | 2,398 |
| Crowds | Quiet | Quiet | Moderate | Moderate | Moderate | Busy | Very busy | Busy | Moderate | Quiet | Quiet | Quiet | |
| Weather | Cool | Cool | Mild | Mild, wet | Mild, wet | Hot | Hot | Hot | Hot | Mild | Mild | Cool |
| Month | High °F | Low °F | Precip., in | Snow, in | Daylight | Visitors | Crowds | Weather |
|---|---|---|---|---|---|---|---|---|
| January | 40° | 24° | 2.5 | – | 9:44 | 65,000 | Quiet | Cool |
| February | 46° | 28° | 2.0 | – | 10:41 | 83,000 | Quiet | Cool |
| Marchbest | 56° | 36° | 3.3 | – | 11:50 | 219,000 | Moderate | Mild |
| April | 68° | 46° | 4.5 | – | 13:09 | 197,000 | Moderate | Mild, wet |
| May | 77° | 57° | 4.8 | – | 14:15 | 222,000 | Moderate | Mild, wet |
| June | 86° | 65° | 4.4 | – | 14:51 | 297,000 | Busy | Hot |
| July | 89° | 69° | 3.7 | – | 14:37 | 491,000 | Very busy | Hot |
| August | 88° | 66° | 3.7 | – | 13:40 | 272,000 | Busy | Hot |
| September | 81° | 57° | 3.4 | – | 12:23 | 171,000 | Moderate | Hot |
| Octoberbest | 69° | 46° | 3.1 | – | 11:07 | 144,000 | Quiet | Mild |
| Novemberbest | 55° | 36° | 3.3 | – | 10:01 | 124,000 | Quiet | Mild |
| December | 44° | 29° | 2.3 | – | 9:29 | 114,000 | Quiet | Cool |
| Year | 67° | 46° | 40.8 | – | 2,398,000 | |||
Year: average high and low, total precipitation and snowfall, total visitors. T = trace (under 0.05 in). – = not measured at this station. Updated .
- Hottest July, average high 89°F
- Coldest nights January, average low 24°F
- Source NOAA National Centers for Environmental Information; National Park Service
- Visitors a year about 2,398,000 (2023–2025 average)
- State Missouri
Closures, reservations and alerts: Gateway Arch National Park on nps.gov
Nearby
- Lincoln Home National Historic SiteBest: Sep · Illinois
- Ozark National Scenic RiverwaysBest: Oct and Nov · Missouri
- George Rogers Clark National Historical ParkBest: Mar and Oct · Indiana
- Lincoln Boyhood National MemorialBest: Oct · Indiana