Mammoth Mountain Ski Area Weather Forecast

    • 45
    • 67

    Sunny

    • 51
    • 72

    Mostly Sunny

    • 52
    • 70

    Partly Sunny

    • 50
    • 69

    Mostly Sunny

    • 48
    • 66

    Mostly Sunny

    • 46
    • 64

    Mostly Sunny

Today 30 Sep Mono

Sunny. Highs 72 to 82. Light Winds becoming north around 10 Mph in the afternoon.

Tonight 30 Sep Mono

Clear. Lows 37 to 47. 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 °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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