Clear Lake Reservoir Weather Forecast

    • 28
    • 59

    Becoming Sunny

    • 38
    • 56

    Partly Sunny

    • 42
    • 56

    Chance Rain

    • 36
    • 50

    Rain

    • 31
    • 46

    Chance Rain/Snow

    • 38
    • 45

    Rain

Today 13 Dec Northeast Siskiyou and Northwest Modoc Counties

Partly cloudy this morning then clearing. Patchy fog this morning. Highs around 60. East Winds around 5 Mph.

Tonight 13 Dec Northeast Siskiyou and Northwest Modoc Counties

Mostly clear. Lows in the mid 20s to lower 30s. Southeast Winds 5 to 10 Mph.

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Clear Lake Reservoir Temperature Statistics

December Temperature

Klamath Falls International Airport (35.4 miles)

  • Lowest 1 December, 2025

    17.1 °F

  • Average December

    36.2 °F

  • Highest 10 December, 2025

    59 °F

Climate (2020–Present)

Klamath Falls International Airport (35.4 miles)

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  • Average Low 2020–2025

    34 °F

  • Average 2020–2025

    48.7 °F

  • Average High 2020–2025

    63.1 °F
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