Mammoth Weather Forecast

    • 34
    • 62

    Mostly Sunny

    • 38
    • 69

    Sunny

    • 38
    • 72

    Sunny

    • 39
    • 78

    Sunny

    • 36
    • 74

    Mostly Sunny

    • 37
    • 72

    Mostly Sunny

Today 13 Oct Northeast Siskiyou and Northwest Modoc Counties

Sunny. Highs in the lower to mid 60s. Southeast Winds around 5 Mph shifting to the north this afternoon.

Tonight 13 Oct Northeast Siskiyou and Northwest Modoc Counties

Mostly clear. Lows in the lower to mid 30s. West Winds around 5 Mph shifting to the southwest after Midnight, then shifting to the east well after midnight.

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Mammoth Temperature Statistics

October Temperature

Klamath Falls International Airport (34.2 miles)

  • Lowest 11 October, 2026

    30.9 °F

  • Average October

    57.9 °F

  • Highest 7 October, 2026

    86.6 °F

Climate (2021–2026)

Klamath Falls International Airport (34.2 miles)

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  • Average Low 2021–2026

    33.9 °F

  • Average 2021–2026

    48.7 °F

  • Average High 2021–2026

    63.4 °F
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