Mammoth Mountain Ski Area Weather Forecast

    • 48
    • 65

    Mostly Sunny

    • 49
    • 65

    Mostly Sunny

    • 43
    • 59

    Mostly Sunny

    • 43
    • 60

    Mostly Sunny

    • 37
    • 54

    Mostly Sunny

    • 39
    • 56

    Sunny

    • 42
    • 61

    Sunny

Today 23 Sep Mono

Sunny. Highs 70 to 80.

Tonight 23 Sep Mono

Clear. Haze through the night. Areas of smoke after midnight. Lows 38 to 48. Light Winds.

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Mammoth Mountain Ski Area Temperature Statistics

September Temperature

Mammoth Yosemite Airport (10.6 miles)

  • Lowest 18 September, 2026

    28.4 °F

  • Average September

    58.3 °F

  • Highest 9 September, 2026

    84.2 °F

Climate (2021–2026)

Mammoth Yosemite Airport (10.6 miles)

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  • Average Low 2021–2026

    29.4 °F

  • Average 2021–2026

    45.7 °F

  • Average High 2021–2026

    60.5 °F
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