When to visit US national parks, month by month

Average weather, daylight and crowds for every month at 60 national parks and 217 other park sites, from NOAA climate normals and National Park Service visitor counts.

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Most-visited national parks

• Great Smoky Mountains National ParkBest Sep, Oct and Nov · busiest Oct
• Zion National ParkBest Apr, Oct and Nov · busiest Jun
• Grand Canyon National ParkBest Apr, May and Oct · busiest Jul
• Yellowstone National ParkBest Jul, Aug and Sep · busiest Jul
• Rocky Mountain National ParkBest Jun · busiest Jul
• Yosemite National ParkBest May and Oct · busiest Jul
• Acadia National ParkBest Jun, Jul and Sep · busiest Aug
• Grand Teton National ParkBest Jun, Aug and Sep · busiest Jul
• Olympic National ParkBest Apr, May and Jun · busiest Aug
• Glacier National ParkBest Aug and Sep · busiest Jul
• Joshua Tree National ParkBest Nov · busiest Mar
• Cuyahoga Valley National ParkBest Oct · busiest Jul

All 277 parks A–Z · By state · Least crowded national parks

Weather 1991–2020 averages at the nearest NOAA station to each park. Visitors National Park Service recreation visits, 2023–2025 average. Sources and method