Great Falls Weather Forecast

    • 36
    • 51

    Breezy

    • 29
    • 52

    Partly Sunny

    • 28
    • 40

    Mostly Cloudy

    • 31
    • 42

    Mostly Cloudy

    • 33
    • 49

    Chance Rain/Snow

    • 27
    • 45

    Slight Chance Rain/Snow

Today 27 Oct Cascade County below 5000ft

Windy. Mostly cloudy early in the morning then becoming mostly sunny. A 50 percent chance of rain early in the morning. Highs in the upper 40s. Southwest Winds 15 to 30 Mph with Gusts to around 45 Mph.

Tonight 27 Oct Cascade County below 5000ft

Partly cloudy. Lows in the mid 30s. Southwest Winds 15 to 20 Mph with Gusts to around 35 Mph.

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Great Falls Temperature Statistics

October Temperature

Great Falls, Great Falls International Airport (3.7 miles)

  • Lowest 24 October, 2026

    24.1 °F

  • Average October

    50.8 °F

  • Highest 5 October, 2026

    85.6 °F

Climate (2021–2026)

Great Falls, Great Falls International Airport (3.7 miles)

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  • Average Low 2021–2026

    34.3 °F

  • Average 2021–2026

    46.9 °F

  • Average High 2021–2026

    59.1 °F
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