Holter Lake Weather Forecast

    • 57
    • 81

    Becoming Sunny

    • 60
    • 88

    Sunny

    • 60
    • 91

    Mostly Sunny

    • 60
    • 89

    Chance Thunderstorms

    • 59
    • 88

    Chance Thunderstorms

    • 61
    • 88

    Slight Chance Thunderstorms

Today 23 Jul Gates of the Mountains

Sunny. Highs 75 to 80. West Winds up to 10 Mph.

Tonight 23 Jul Gates of the Mountains

Mostly clear. Lows 50 to 55. Northwest Winds up to 10 Mph shifting to the southwest after midnight.

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Holter Lake Temperature Statistics

July Temperature

Helena Regional Airport (23.6 miles)

  • Lowest 5 July, 2025

    49.6 °F

  • Average July

    72 °F

  • Highest 8 July, 2025

    97.6 °F

Climate (2020–Present)

Helena Regional Airport (23.6 miles)

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  • Average Low 2020–2025

    36.1 °F

  • Average 2020–2025

    47.5 °F

  • Average High 2020–2025

    59.4 °F
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