Mammoth Mountain Ski Area Weather Forecast

    • 53
    • 66

    Increasing Clouds

    • 56
    • 72

    Partly Sunny

    • 54
    • 71

    Mostly Sunny

    • 50
    • 67

    Mostly Sunny

    • 47
    • 64

    Mostly Sunny

    • 46
    • 62

    Mostly Sunny

Today 8 Sep Mono

Sunny. Highs 74 to 84. Light Winds becoming southwest around 10 Mph in the afternoon.

Tonight 8 Sep Mono

Mostly cloudy. Lows 45 to 55. Light Winds.

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Mammoth Mountain Ski Area Temperature Statistics

September Temperature

Mammoth Yosemite Airport (10.6 miles)

  • Lowest 5 September, 2026

    33.8 °F

  • Average September

    56.2 °F

  • Highest 1 September, 2026

    71.6 °F

Climate (2021–2026)

Mammoth Yosemite Airport (10.6 miles)

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  • Average Low 2021–2026

    29.5 °F

  • Average 2021–2026

    45.7 °F

  • Average High 2021–2026

    60.5 °F
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