Mammoth Weather Forecast

    • 51
    • 88

    Mostly Sunny

    • 51
    • 86

    Increasing Clouds

    • 50
    • 87

    Partly Sunny

    • 49
    • 86

    Mostly Sunny

    • 47
    • 85

    Mostly Sunny

    • 44
    • 82

    Mostly Sunny

    • 46
    • 82

    Mostly Sunny

Today 24 Aug Northeast Siskiyou and Northwest Modoc Counties

Partly cloudy in the late morning and early afternoon then becoming sunny. Highs in the mid 80s to lower 90s. Southeast Winds 5 to 10 Mph shifting to the south 10 to 20 Mph this afternoon.

Tonight 24 Aug Northeast Siskiyou and Northwest Modoc Counties

Clear until well after midnight then becoming partly cloudy. Lows in the lower to mid 50s. South Winds 10 to 15 Mph shifting to the southeast 5 to 10 Mph well after midnight.

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Mammoth Temperature Statistics

August Temperature

Klamath Falls International Airport (34.2 miles)

  • Lowest 2 August, 2026

    41.6 °F

  • Average August

    68.9 °F

  • Highest 7 August, 2026

    97.6 °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

    48.6 °F

  • Average High 2021–2026

    63.4 °F
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