Boulder Lake Weather Forecast

    • 15
    • 29

    Blizzard

    • 15
    • 19

    Snow Likely

    • 21
    • 24

    Snow

    • 20
    • 25

    Snow Likely

    • 23
    • 25

    Snow Likely

    • 21
    • 27

    Snow Likely

Today 19 Dec Potomac/Seeley Lake Region

Rain with snow likely in the Morning, then Areas of snow in the afternoon. Chance of precipitation 90 percent. Little or no new snow accumulation. Highs in the mid 30s to lower 40s. West Winds 15 to 25 Mph with Gusts to around 40 Mph.

Tonight 19 Dec Potomac/Seeley Lake Region

Mostly cloudy with a 50 percent chance of snow. Lows 19 to 26. West Winds 15 to 20 Mph.

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Boulder Lake Temperature Statistics

December Temperature

Missoula, Missoula International Airport (15.5 miles)

  • Lowest 1 December, 2025

    17.1 °F

  • Average December

    37.5 °F

  • Highest 10 December, 2025

    55.9 °F

Climate (2020–Present)

Missoula, Missoula International Airport (15.5 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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