Indiana
National parks in Indiana
Indiana has 1 national park and 2 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 |
|---|---|---|---|---|
| Indiana Dunes National Park | Apr | Jun | 82° / 18° | 2,700,000 |
| George Rogers Clark National Historical Park | Mar and Oct | May | 89° / 22° | 142,000 |
| Lincoln Boyhood National Memorial | Oct | Jul | 87° / 26° | 125,000 |
Indiana parks by month
| Month | Visitors, all 3 sites | Sites with mild weather |
|---|---|---|
| January | 79,000 | none |
| February | 88,000 | none |
| March | 133,000 | George Rogers Clark National Historical Park |
| April | 177,000 | Indiana Dunes |
| May | 313,000 | none |
| June | 514,000 | none |
| July | 533,000 | none |
| August | 431,000 | none |
| September | 270,000 | none |
| October | 201,000 | George Rogers Clark National Historical Park, Lincoln Boyhood National Memorial |
| November | 117,000 | none |
| December | 111,000 | 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.