Mammoth Weather Forecast

    • 39
    • 72

    Decreasing Clouds

    • 34
    • 70

    Partly Sunny

    • 41
    • 68

    Chance Rain Showers

    • 41
    • 66

    Chance Rain

    • 40
    • 64

    Chance Rain

    • 36
    • 64

    Chance Rain

Today 6 Apr Northeast Siskiyou and Northwest Modoc Counties

Partly cloudy in the morning then clearing. Highs in the lower to mid 70s. Southeast Winds around 5 Mph shifting to the southwest in the afternoon.

Tonight 6 Apr Northeast Siskiyou and Northwest Modoc Counties

Mostly clear. Lows in the mid 30s to lower 40s. West Winds 5 to 10 Mph.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Mammoth Temperature Statistics

April Temperature

Klamath Falls International Airport (34.2 miles)

  • Lowest 3 April, 2026

    17.1 °F

  • Average April

    38.8 °F

  • Highest 3 April, 2026

    60.1 °F

Climate (2021–Present)

Klamath Falls International Airport (34.2 miles)

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  • Average Low 2021–2026

    34.1 °F

  • Average 2021–2026

    48.9 °F

  • Average High 2021–2026

    63.5 °F
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