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Draft data. Times, fares and step counts are desk estimates awaiting field checks. Unknown times stay unknown. How we verify

When to go · Mammoth Lakes

Mammoth Lakes in September

Great month. Inside Mammoth Lakes's best window: Jan–Mar (ski), Jul–Sep (hiking).

Key facts

Verdict
Great
Temperature
22°C / 4°C
average high / low
Rain days
1
Crowds
Medium
United States overall
Prices
Medium
United States overall

Verdict

GreatBest and avoid months for Mammoth Lakes

Inside Mammoth Lakes's best window: Jan–Mar (ski), Jul–Sep (hiking).

Weather in September

Long-term averages
  • Mammoth LakesHighs around 22 °C, lows around 4 °C, rain on about 1 day

Festivals and holidays

Dates as our data lists them. Moving holidays (lunar and Islamic calendars, Easter) shift every year: check the date for your year before you build a trip on it.

  • Labor Day big impact

    1st Monday of September · United States

    End of summer; last big road-trip weekend.

Crowds and prices

Crowds · United States overall
Medium
Prices · United States overall
Medium

United States overall: After Labor Day the crowds drop and parks stay open; Florida and the Gulf are at hurricane peak.

What to pack

  • A warm coat, hat and gloves for mornings and evenings

Build the full packing list for your trip →

Across United States in September →