Duncan Reservoir Weather Forecast

    • 38
    • 46

    Rain

    • 31
    • 44

    Rain/Snow

    • 36
    • 44

    Rain

    • 33
    • 46

    Rain

    • 30
    • 42

    Rain Likely

    • 31
    • 43

    Rain/Snow Likely

Today 18 Dec Modoc County

Mostly cloudy. Chance of light freezing rain this morning. Chance of rain in the late morning and afternoon. Snow level 7000 feet. Highs in the mid 40s to lower 50s. Windy. Southwest Winds 20 to 30 Mph. Gusts up to 40 Mph increasing to 50 Mph this afternoon. Chance of precipitation 40 percent.

Tonight 18 Dec Modoc County

Mostly cloudy. Chance of rain in the Evening, then rain and light freezing rain after midnight. Snow level 6500 feet. Lows in the mid 30s to lower 40s. Windy. Southwest Winds 20 to 30 Mph with Gusts to around 50 Mph. Chance of precipitation 90 percent.

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Duncan Reservoir Temperature Statistics

December Temperature

Alturas (19.9 miles)

  • Lowest 1 December, 2025

    15.1 °F

  • Average December

    44 °F

  • Highest 10 December, 2025

    64 °F

Climate (2020–Present)

Alturas (19.9 miles)

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  • Average Low 2020–2025

    33.3 °F

  • Average 2020–2025

    49.3 °F

  • Average High 2020–2025

    64.4 °F
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