Mammoth Mountain Ski Area Weather Forecast

    • 37
    • 56

    Mostly Sunny

    • 37
    • 50

    Chance Rain/Snow

    • 43
    • 60

    Sunny

    • 48
    • 68

    Sunny

    • 47
    • 68

    Mostly Sunny

    • 45
    • 66

    Mostly Sunny

Today 27 Sep Mono

Partly cloudy. Patchy smoke in the afternoon. Highs 64 to 74. Southwest Winds 10 to 15 Mph. Gusts up to 35 Mph in the afternoon.

Tonight 27 Sep Mono

Partly cloudy. Areas of smoke through the night. Slight chance of Showers after midnight. Lows 26 to 36. Southwest Winds 10 to 15 Mph with Gusts up to 30 Mph in the evening becoming light.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Mammoth Mountain Ski Area Temperature Statistics

September Temperature

Mammoth Yosemite Airport (10.6 miles)

  • Lowest 18 September, 2026

    28.4 °F

  • Average September

    58.1 °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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