The Best National Parks to Visit in June — Ranked by Data
The best national parks to visit in June are North Cascades, Katmai, Crater Lake — 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 June
| # | Park | Verdict | Score | Crowds vs peak | High/Low | Daylight |
|---|---|---|---|---|---|---|
| 1 | North Cascades National Park | Best window | 91 | 26% | 74°F/50°F | 16.1h |
| 2 | Katmai National Park | Best window | 88 | 34% | 59°F/40°F | 18.3h |
| 3 | Crater Lake National Park | Best window | 84 | 44% | 57°F/34°F | 15.3h |
| 4 | Big Bend National Park | Best window | 81 | 26% | 87°F/65°F | 14h |
| 5 | Olympic National Park | Best window | 78 | 48% | 67°F/47°F | 16h |
| 6 | Guadalupe Mountains National Park | Shoulder | 77 | 37% | 88°F/64°F | 14.2h |
| 7 | Lassen Volcanic National Park | Peak crowds | 75 | 72% | 70°F/41°F | 15.1h |
| 8 | Sequoia National Park | Best window | 75 | 69% | 68°F/40°F | 14.6h |
| 9 | Wrangell–St. Elias National Park | Peak crowds | 75 | 71% | 70°F/39°F | 19.4h |
| 10 | Mount Rainier National Park | Best window | 74 | 53% | 54°F/37°F | 15.8h |
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 June
At the other end of the ranking: Death Valley (harsh conditions). Every park's page explains exactly why, with the underlying numbers.
All 63 parks in June
North Cascades (91)Katmai (88)Crater Lake (84)Big Bend (81)Olympic (78)Guadalupe Mountains (77)Lassen Volcanic (75)Sequoia (75)Wrangell–St. Elias (75)Mount Rainier (74)Gates of the Arctic (73)Glacier (73)Isle Royale (73)Shenandoah (73)Kenai Fjords (72)Lake Clark (72)Rocky Mountain (72)Gateway Arch (71)Grand Teton (70)Kobuk Valley (69)Saguaro (69)Theodore Roosevelt (69)Wind Cave (69)Yellowstone (69)Acadia (68)Badlands (68)Denali (68)American Samoa (68)Channel Islands (67)Kings Canyon (67)Grand Canyon (66)Yosemite (66)Black Canyon of the Gunnison (65)Bryce Canyon (65)Capitol Reef (65)Great Basin (65)Great Sand Dunes (65)Joshua Tree (65)Redwood (65)Canyonlands (64)Indiana Dunes (64)Mesa Verde (64)Cuyahoga Valley (63)Pinnacles (63)Glacier Bay (62)Haleakalā (61)New River Gorge (61)Voyageurs (61)White Sands (59)Virgin Islands (58)Great Smoky Mountains (56)Carlsbad Caverns (55)Congaree (55)Mammoth Cave (55)Petrified Forest (55)Arches (54)Hot Springs (50)Dry Tortugas (49)Zion (49)Everglades (47)Hawaiʻi Volcanoes (46)Biscayne (44)Death Valley (42)
Last verified 2026-07-16