Great Falls International Airport Weather Forecast

    • 39
    • 66

    Increasing Clouds

    • 43
    • 64

    Increasing Clouds

    • 45
    • 68

    Mostly Cloudy

    • 39
    • 68

    Chance Rain

    • 31
    • 52

    Chance Rain

    • 28
    • 48

    Partly Sunny

    • 28
    • 48

    Partly Sunny

Today 22 Oct Cascade County below 5000ft

Sunny. Highs 65 to 70. Southwest Winds up to 10 Mph.

Tonight 22 Oct Cascade County below 5000ft

Mostly clear. Lows 35 to 40. South Winds 5 to 15 Mph.

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Great Falls International Airport Temperature Statistics

October Temperature

Great Falls, Great Falls International Airport (0.6 miles)

  • Lowest 13 October, 2025

    26.1 °F

  • Average October

    47 °F

  • Highest 10 October, 2025

    78.1 °F

Climate (2020–Present)

Great Falls, Great Falls International Airport (0.6 miles)

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  • Average Low 2020–2025

    34 °F

  • Average 2020–2025

    46.4 °F

  • Average High 2020–2025

    58.4 °F
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