Mammoth Weather Forecast

    • 32
    • 58

    Slight Chance Rain

    • 35
    • 64

    Mostly Sunny

    • 39
    • 70

    Sunny

    • 43
    • 74

    Mostly Sunny

    • 43
    • 77

    Partly Sunny

    • 43
    • 74

    Partly Sunny

Today 27 Apr Northeast Siskiyou and Northwest Modoc Counties

Sunny in the morning then becoming partly cloudy. Highs in the mid 50s to lower 60s. West Winds 5 to 10 Mph.

Tonight 27 Apr Northeast Siskiyou and Northwest Modoc Counties

Partly cloudy in the evening then becoming clear. Lows in the lower to mid 30s. 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 17 April, 2026

    14.6 °F

  • Average April

    44.4 °F

  • Highest 5 April, 2026

    71.7 °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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