Holter Lake Weather Forecast

    • 49
    • 67

    Rain

    • 40
    • 53

    Rain

    • 42
    • 60

    Chance Rain

    • 41
    • 63

    Chance Rain Showers

    • 45
    • 67

    Chance Rain Showers

    • 43
    • 65

    Chance Rain Showers

Today 17 May Gates of the Mountains

Partly cloudy in the Morning, then mostly cloudy with a 20 percent chance of rain Showers in the afternoon. Highs 60 to 65. Southwest Winds up to 10 Mph shifting to the southeast in the afternoon.

Tonight 17 May Gates of the Mountains

Cloudy. Slight chance of rain Showers in the Evening, then rain likely and slight chance of Thunderstorms after midnight. Lows 40 to 45. Northeast Winds up to 10 Mph. Chance of precipitation 70 percent.

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Holter Lake Temperature Statistics

May Temperature

Helena Regional Airport (23.6 miles)

  • Lowest 6 May, 2025

    34.6 °F

  • Average May

    57.1 °F

  • Highest 10 May, 2025

    88.6 °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

    59.3 °F
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