Canyon Ferry Lake Weather Forecast

    • 57
    • 73

    Chance Rain Showers

    • 58
    • 73

    Chance Rain Showers

    • 56
    • 73

    Chance Thunderstorms

    • 57
    • 73

    Partly Sunny

    • 59
    • 75

    Mostly Sunny

    • 60
    • 78

    Partly Sunny

Today 16 Aug Canyon Ferry Area

Mostly sunny. Patchy fog in the morning. A 20 percent chance of Thunderstorms in the afternoon. Highs in the upper 70s. South Winds up to 10 Mph shifting to the west in the afternoon.

Tonight 16 Aug Canyon Ferry Area

Partly cloudy. Chance of rain Showers and slight chance of Thunderstorms. Patchy fog early in the morning. Highs in the upper 70s. Lows 48 to 55. South Winds up to 10 Mph with Gusts to around 25 Mph. Chance of precipitation 50 percent.

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Canyon Ferry Lake Temperature Statistics

August Temperature

Helena Regional Airport (25.5 miles)

  • Lowest 4 August, 2026

    45.6 °F

  • Average August

    70.4 °F

  • Highest 1 August, 2026

    103.6 °F

Climate (2021–2026)

Helena Regional Airport (25.5 miles)

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  • Average Low 2021–2026

    36.3 °F

  • Average 2021–2026

    47.9 °F

  • Average High 2021–2026

    59.9 °F
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