Permit Season Calculator

Find optimal visit windows based on permit seasons, weather windows, and crowd levels. Enter latitude and elevation to get season recommendations.

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Higher elevations have shorter seasons. At 7,000+ feet, snow can linger until June-July. Peak crowds are typically mid-June through Labor Day. For solitude, target the "shoulder seasons" — the first 2-3 weeks after snow melts, or September after Labor Day. Permits for popular trails (JMT, Enchantments) open 6 months in advance.