Glenwood Lake Weather Forecast

    • 47
    • 60

    Rain Showers Likely

    • 51
    • 64

    Rain Showers Likely

    • 52
    • 72

    Mostly Sunny

    • 49
    • 69

    Partly Sunny

    • 44
    • 64

    Mostly Sunny

    • 43
    • 60

    Mostly Sunny

Today 17 Aug Elkhorn and Boulder Mountains

Mostly cloudy. A 50 percent chance of Thunderstorms in the afternoon. Highs 70 to 80. West Winds up to 10 Mph.

Tonight 17 Aug Elkhorn and Boulder Mountains

Mostly cloudy with a 40 percent chance of Thunderstorms in the Evening, then mostly clear after midnight. Lows 50 to 55. Southwest Winds up to 10 Mph.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Glenwood Lake Temperature Statistics

August Temperature

Helena Regional Airport (21.1 miles)

  • Lowest 7 August, 2025

    49.6 °F

  • Average August

    69.7 °F

  • Highest 12 August, 2025

    95.6 °F

Climate (2020–Present)

Helena Regional Airport (21.1 miles)

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  • Average Low 2020–2025

    36 °F

  • Average 2020–2025

    47.5 °F

  • Average High 2020–2025

    59.4 °F
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