Jack Mountain Weather Forecast

    • 16
    • 30

    Mostly Sunny

    • 22
    • 31

    Mostly Cloudy

    • 24
    • 28

    Snow

    • 12
    • 24

    Snow

    • -2
    • 15

    Snow Likely

    • -5
    • 1

    Chance Snow

Today 29 Jan Elkhorn and Boulder Mountains

Sunny. Highs 30 to 35. West Winds up to 10 Mph.

Tonight 29 Jan Elkhorn and Boulder Mountains

Colder. Mostly clear. Lows 5 to 15. West Winds up to 10 Mph.

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Jack Mountain Temperature Statistics

January Temperature

Helena Regional Airport (23 miles)

  • Lowest 20 January, 2025

    -10.2 °F

  • Average January

    21.6 °F

  • Highest 16 January, 2025

    52.6 °F

Climate (2020–Present)

Helena Regional Airport (23 miles)

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  • Average Low 2020–2025

    36.2 °F

  • Average 2020–2025

    47.5 °F

  • Average High 2020–2025

    59.3 °F
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