The Best National Parks to Visit in March — Ranked by Data
The best national parks to visit in March are Great Basin, Badlands, Shenandoah — ranked by a fixed formula over official NPS crowd data (2021–2025), NOAA weather normals and daylight, with seasonal closures counted against inaccessible parks.
Top 10 for March
| # | Park | Verdict | Score | Crowds vs peak | High/Low | Daylight |
|---|---|---|---|---|---|---|
| 1 | Great Basin National Park | Best window | 81 | 10% | 48°F/27°F | 11.9h |
| 2 | Badlands National Park | Shoulder | 80 | 10% | 50°F/22°F | 11.9h |
| 3 | Shenandoah National Park | Best window | 78 | 23% | 55°F/32°F | 11.9h |
| 4 | Wind Cave National Park | Best window | 78 | 15% | 50°F/24°F | 11.9h |
| 5 | Mesa Verde National Park | Best window | 77 | 17% | 47°F/30°F | 11.9h |
| 6 | Black Canyon of the Gunnison National Park | Best window | 76 | 19% | 49°F/23°F | 11.9h |
| 7 | Capitol Reef National Park | Best window | 76 | 44% | 57°F/34°F | 11.9h |
| 8 | Gateway Arch National Park | Shoulder | 76 | 35% | 56°F/36°F | 11.9h |
| 9 | Great Sand Dunes National Park | Best window | 75 | 21% | 49°F/24°F | 11.9h |
| 10 | Theodore Roosevelt National Park | Shoulder | 74 | 6% | 44°F/18°F | 11.8h |
Score = 45% weather comfort (NOAA 1991–2020 normals) + 35% quietness (NPS visitation 2021–2025) + 20% daylight, with penalties where headline access is typically closed. Identical formula for every park. Methodology.
Think twice in March
At the other end of the ranking: Denali (harsh conditions), Yellowstone (headline access typically closed), Katmai (headline access typically closed), Kobuk Valley (harsh conditions), Lassen Volcanic (headline access typically closed). Every park's page explains exactly why, with the underlying numbers.
All 63 parks in March
Last verified 2026-07-16