Upper Holter Lake Weather Forecast

    • 31
    • 39

    Rain Likely

    • 29
    • 43

    Chance Rain

    • 33
    • 45

    Mostly Cloudy

    • 25
    • 49

    Chance Rain/Snow

    • 26
    • 40

    Chance Rain/Snow

    • 24
    • 40

    Mostly Cloudy

    • 27
    • 40

    Mostly Cloudy

Today 21 Dec Gates of the Mountains

Mostly cloudy. Slight chance of snow in the late morning and early Afternoon, then slight chance of rain and snow late in the afternoon. Highs 34 to 40. South Winds 5 to 15 Mph. Chance of precipitation 20 percent.

Tonight 21 Dec Gates of the Mountains

Mostly cloudy. Chance of snow and slight chance of light freezing rain in the evening. Chance of rain through the night. Light freezing rain likely and slight chance of snow after midnight. Snow accumulation up to 1 inch. Near steady temperature in the mid 30s. South Winds up to 10 Mph with Gusts to around 25 Mph. Chance of precipitation 70 percent.

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Upper Holter Lake Temperature Statistics

December Temperature

Helena Regional Airport (14.9 miles)

  • Lowest 1 December, 2025

    3 °F

  • Average December

    36.8 °F

  • Highest 10 December, 2025

    61 °F

Climate (2020–Present)

Helena Regional Airport (14.9 miles)

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  • Average Low 2020–2025

    36.3 °F

  • Average 2020–2025

    47.7 °F

  • Average High 2020–2025

    59.6 °F
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