Mammoth Weather Forecast

    • 34
    • 54

    Mostly Cloudy

    • 32
    • 49

    Slight Chance Rain

    • 30
    • 48

    Rain Likely

    • 24
    • 42

    Rain/Snow

    • 19
    • 37

    Snow

    • 20
    • 37

    Chance Snow

    • 22
    • 38

    Chance Snow

Today 13 Feb Northeast Siskiyou and Northwest Modoc Counties

Mostly cloudy. Highs in the lower to mid 50s. Northeast Winds around 5 Mph shifting to the west late this afternoon.

Tonight 13 Feb Northeast Siskiyou and Northwest Modoc Counties

Mostly cloudy. A 10 percent chance of rain well after midnight. Lows in the lower to mid 30s. Southwest Winds around 5 Mph shifting to the southeast after midnight.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Mammoth Temperature Statistics

February Temperature

Klamath Falls International Airport (34.2 miles)

  • Lowest 3 February, 2026

    19.7 °F

  • Average February

    38.9 °F

  • Highest 5 February, 2026

    63.6 °F

Climate (2021–Present)

Klamath Falls International Airport (34.2 miles)

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  • Average Low 2021–2026

    34 °F

  • Average 2021–2026

    48.7 °F

  • Average High 2021–2026

    63.3 °F
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