Great Falls International Airport Weather Forecast

    • 42
    • 63

    Mostly Cloudy

    • 47
    • 78

    Partly Sunny

    • 43
    • 69

    Mostly Sunny

    • 49
    • 74

    Mostly Sunny

    • 53
    • 83

    Partly Sunny

    • 48
    • 77

    Mostly Sunny

Today 1 Oct Cascade County below 5000ft

Areas of fog early in the morning. Patchy fog late in the morning. Mostly cloudy with a 20 percent chance of rain Showers. Highs in the lower 60s. Northwest Winds up to 5 Mph shifting to the northeast in the afternoon.

Tonight 1 Oct Cascade County below 5000ft

Mostly cloudy. Lows in the lower 40s. East Winds up to 10 Mph shifting to the south with Gusts to around 25 Mph after midnight.

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Great Falls International Airport Temperature Statistics

October 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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