Williams Lake Weather Forecast

    • 19
    • 33

    Rain/Snow

    • 21
    • 34

    Blizzard

    • 26
    • 32

    Snow

    • 18
    • 30

    Snow

    • 16
    • 22

    Snow Likely

    • 22
    • 26

    Snow Likely

Today 16 Dec Northern Clearwater Mountains

Mostly cloudy with a 50 percent chance of Areas of rain. Highs in the mid 40s to lower 50s.

Tonight 16 Dec Northern Clearwater Mountains

A chance of rain in the Evening, then rain likely after midnight. Chance of rain near 100 percent. Lows in the upper 20s to mid 30s. South Winds 15 to 25 Mph with Gusts to around 45 Mph.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Williams Lake Temperature Statistics

December Temperature

Missoula, Missoula International Airport (37.9 miles)

  • Lowest 1 December, 2025

    17.1 °F

  • Average December

    36.5 °F

  • Highest 10 December, 2025

    55.9 °F

Climate (2020–Present)

Missoula, Missoula International Airport (37.9 miles)

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  • Average Low 2020–2025

    35.9 °F

  • Average 2020–2025

    47.4 °F

  • Average High 2020–2025

    59.5 °F
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