Great Falls Weather Forecast

    • 23
    • 43

    Mostly Sunny

    • 33
    • 51

    Partly Sunny

    • 37
    • 58

    Mostly Sunny

    • 45
    • 71

    Mostly Sunny

    • 43
    • 73

    Partly Sunny

    • 42
    • 69

    Mostly Sunny

Today 13 Oct Cascade County below 5000ft

Sunny. Patchy dense fog in the morning. Highs in the lower 40s. Southwest Winds up to 10 Mph.

Tonight 13 Oct Cascade County below 5000ft

Mostly clear. Lows in the mid 20s. South Winds up to 10 Mph with Gusts to around 25 Mph.

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Great Falls Temperature Statistics

October Temperature

Great Falls, Great Falls International Airport (3.7 miles)

  • Lowest 10 October, 2026

    30.9 °F

  • Average October

    58.7 °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

    47 °F

  • Average High 2021–2026

    59.1 °F
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