Great Falls Weather Forecast

    • 35
    • 63

    Mostly Cloudy

    • 29
    • 52

    Partly Sunny

    • 38
    • 62

    Partly Sunny

    • 38
    • 64

    Partly Sunny

    • 39
    • 68

    Mostly Cloudy

    • 39
    • 60

    Mostly Cloudy

Today 18 Oct Cascade

Mostly cloudy. Highs 55 to 65. Northwest Winds 5 to 10 Mph shifting to the north 10 to 20 Mph in the afternoon.

Tonight 18 Oct Cascade

Colder. Mostly cloudy. Lows 30 to 35. North Winds 5 to 15 Mph.

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  • Temperature Forecast NOAA

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Great Falls Temperature Statistics

October Temperature

Great Falls, Great Falls International Airport (3.7 miles)

  • Lowest 12 October, 2021

    21.9 °F

  • Average October

    51 °F

  • Highest 4 October, 2021

    82.9 °F

Climate (2010–Present)

Great Falls, Great Falls International Airport (3.7 miles)

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  • Average Low 2010–Present

    34 °F

  • Average 2010–Present

    45.7 °F

  • Average High 2010–Present

    57.2 °F
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