Great Falls Weather Forecast

    • 46
    • 81

    Increasing Clouds

    • 42
    • 73

    Mostly Sunny

    • 50
    • 77

    Partly Sunny

    • 42
    • 82

    Mostly Cloudy

    • 27
    • 54

    Rain/Snow

    • 25
    • 40

    Rain/Snow Likely

Today 6 Oct Cascade County below 5000ft

Sunny. Highs in the upper 70s. Southwest Winds up to 10 Mph shifting to the west in the afternoon.

Tonight 6 Oct Cascade County below 5000ft

Partly cloudy. Lows in the upper 40s. Southwest Winds up to 10 Mph.

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Great Falls Temperature Statistics

October Temperature

Great Falls, Great Falls International Airport (3.7 miles)

  • Lowest 1 October, 2026

    33.7 °F

  • Average October

    53.6 °F

  • Highest 2 October, 2026

    77 °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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