Great Falls International Airport Weather Forecast

    • 56
    • 85

    Increasing Clouds

    • 48
    • 81

    Chance Rain Showers

    • 48
    • 73

    Breezy

    • 48
    • 75

    Partly Sunny

    • 47
    • 73

    Chance Rain Showers

    • 49
    • 73

    Chance Rain Showers

Today 1 Sep Cascade County below 5000ft

Mostly sunny. Highs in the mid 80s. South Winds up to 10 Mph.

Tonight 1 Sep Cascade County below 5000ft

Partly cloudy. Highs in the mid 80s. Lows 47 to 58. South Winds up to 15 Mph with Gusts to around 35 Mph.

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Great Falls International Airport Temperature Statistics

September Temperature

Great Falls, Great Falls International Airport (0.6 miles)

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Climate (2021–2026)

Great Falls, Great Falls International Airport (0.6 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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