Timing is everything when planning a visit to one of America's 63 national parks. We’ve learned through countless adventures that knowing when to go can make the difference between a magical experience and a stressful one. Peak season typically aligns with school breaks and warmer weather, which means popular parks like Glacier, Yosemite, and Grand Canyon can become overwhelmingly busy. That affects everything—from parking availability to lodging prices, and even your time on