Deep Lake Weather Forecast

    • 27
    • 40

    Rain

    • 29
    • 32

    Snow Likely

    • 30
    • 33

    Snow

    • 31
    • 33

    Snow

    • 29
    • 32

    Snow

    • 26
    • 31

    Snow Likely

Today 21 Dec Western Siskiyou County

Rain in the late morning and early Afternoon, then rain Showers and slight chance of Thunderstorms late this afternoon. Snow level 6000 feet this afternoon. Highs in the mid 40s to lower 50s. Southwest Winds 10 to 20 Mph. Chance of precipitation near 100 percent.

Tonight 21 Dec Western Siskiyou County

Mostly cloudy. Rain Showers, snow and slight chance of Thunderstorms in the Evening, then chance of rain and snow after midnight. Patchy dense fog after midnight. Snow level 4500 feet lowering to 4000 feet after midnight. Snow accumulation of 1 to 2 Inches. Lows in the lower to mid 30s. Southwest Winds 10 to 20 Mph. Chance of precipitation 80 percent.

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Deep Lake Temperature Statistics

December Temperature

Montague Siskiyou County Airport (36 miles)

  • Lowest 14 December, 2025

    21 °F

  • Average December

    37.9 °F

  • Highest 6 December, 2025

    57.9 °F

Climate (2020–Present)

Montague Siskiyou County Airport (36 miles)

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  • Average Low 2020–2025

    39.7 °F

  • Average 2020–2025

    54.2 °F

  • Average High 2020–2025

    68.9 °F
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