Hooper State Park Weather Forecast

    • 26
    • 37

    Wintry Mix Likely

    • 22
    • 39

    Rain/Snow Likely

    • 27
    • 42

    Chance Rain/Snow

    • 20
    • 46

    Chance Snow

    • 21
    • 38

    Chance Snow

    • 20
    • 37

    Chance Snow

    • 21
    • 36

    Mostly Cloudy

Today 21 Dec Upper Blackfoot and MacDonald Pass

Mostly cloudy. Chance of snow in the late morning and early Afternoon, then chance of snow and slight chance of rain late in the afternoon. Highs 30 to 36. Southwest Winds up to 10 Mph. Chance of precipitation 50 percent.

Tonight 21 Dec Upper Blackfoot and MacDonald Pass

Mostly cloudy. Chance of Snow, rain and light freezing rain in the evening. Snow, rain and freezing rain likely after midnight. Snow accumulation up to 2 Inches. Snow level 5800 feet. Near steady temperature around 30. Southwest Winds up to 10 Mph. Gusts up to 25 Mph after midnight. Chance of precipitation 70 percent.

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Hooper State Park Temperature Statistics

December Temperature

Helena Regional Airport (39.8 miles)

  • Lowest 1 December, 2025

    3 °F

  • Average December

    36.8 °F

  • Highest 10 December, 2025

    61 °F

Climate (2020–Present)

Helena Regional Airport (39.8 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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