Big Lake Weather Forecast

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    • 56

    Rain

    • 32
    • 50

    Rain

    • 36
    • 47

    Rain Likely

    • 34
    • 51

    Rain

    • 28
    • 47

    Rain Likely

    • 29
    • 43

    Rain/Snow Likely

Today 18 Dec Central Siskiyou County

Mostly cloudy with a 30 percent chance of rain. Snow level 7000 feet in the afternoon. Highs in the lower to mid 50s. Breezy. South Winds 15 to 25 Mph with Gusts to around 40 Mph.

Tonight 18 Dec Central Siskiyou County

Mostly cloudy. Chance of rain in the Evening, then rain after midnight. Snow level 6000 feet rising to 7000 feet after midnight. Lows around 40. Breezy. South Winds 15 to 25 Mph with Gusts to around 40 Mph. Chance of rain 90 percent.

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Big Lake Temperature Statistics

December Temperature

Montague Siskiyou County Airport (16.8 miles)

  • Lowest 14 December, 2025

    21 °F

  • Average December

    35.8 °F

  • Highest 6 December, 2025

    57.9 °F

Climate (2020–Present)

Montague Siskiyou County Airport (16.8 miles)

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  • Average Low 2020–2025

    39.7 °F

  • Average 2020–2025

    54.1 °F

  • Average High 2020–2025

    68.9 °F
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