Ohio
National parks in Ohio
Ohio has 1 national park and 3 other busy National Park System sites in this guide. The best months below balance mild weather and crowds.
| Park | Best months | Busiest | July high / January low °F | Visitors a year |
|---|---|---|---|---|
| Cuyahoga Valley National Park | Oct | Jul | 82° / 18° | 2,933,000 |
| Perry's Victory and International Peace Memorial | Oct | Jul | 82° / 22° | 106,000 |
| Dayton Aviation Heritage National Historical Park | Sep and Oct | May | 87° / 20° | 86,000 |
| Hopewell Culture National Historical Park | Sep and Oct | Jul | 86° / 22° | 60,000 |
Ohio parks by month
| Month | Visitors, all 4 sites | Sites with mild weather |
|---|---|---|
| January | 105,000 | none |
| February | 108,000 | none |
| March | 205,000 | none |
| April | 260,000 | none |
| May | 342,000 | none |
| June | 380,000 | none |
| July | 439,000 | none |
| August | 389,000 | none |
| September | 312,000 | Dayton Aviation Heritage National Historical Park, Hopewell Culture National Historical Park |
| October | 313,000 | Cuyahoga Valley, Perry's Victory and International Peace Memorial, Dayton Aviation Heritage National Historical Park, Hopewell Culture National Historical Park |
| November | 182,000 | none |
| December | 149,000 | none |
Weather 1991–2020 NOAA normals at each park's nearest station. Visitors National Park Service recreation visits, 2023–2025 average. Mild means an average high of 55–80°F without above-normal rain.