Mammoth Mountain Weather Forecast

    • 31
    • 37

    Chance Snow

    • 31
    • 35

    Blizzard

    • 31
    • 35

    Blizzard

    • 29
    • 33

    Blizzard

    • 22
    • 31

    Blizzard

    • 21
    • 28

    Blizzard

    • 20
    • 26

    Blizzard

Today 19 Dec Mono

Partly cloudy. Highs 52 to 62. Southwest Winds 20 to 30 Mph. Gusts up to 40 Mph increasing to 60 Mph in the afternoon. Ridge Gusts up to 90 Mph.

Tonight 19 Dec Mono

Snow and rain. Snow accumulation up to 2 Inches. Lows 29 to 39. Southwest Winds 20 to 30 Mph. Gusts up to 60 Mph decreasing to 45 Mph after midnight. Ridge Gusts up to 85 Mph decreasing to 70 Mph after midnight.

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Mammoth Mountain Temperature Statistics

December Temperature

Mammoth Yosemite Airport (9.9 miles)

  • Lowest 4 December, 2025

    10.4 °F

  • Average December

    36.6 °F

  • Highest 11 December, 2025

    66.2 °F

Climate (2020–Present)

Mammoth Yosemite Airport (9.9 miles)

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  • Average Low 2020–2025

    29.6 °F

  • Average 2020–2025

    46 °F

  • Average High 2020–2025

    60.9 °F
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