Great Falls Weather Forecast

    • 43
    • 76

    Chance Rain Showers

    • 33
    • 55

    Chance Rain Showers

    • 32
    • 53

    Slight Chance Rain/Snow

    • 50
    • 73

    Partly Sunny

    • 46
    • 72

    Chance Rain Showers

    • 48
    • 75

    Mostly Cloudy

Today 3 May Cascade County below 5000ft

Sunny. Highs in the mid 70s. West Winds up to 15 Mph.

Tonight 3 May Cascade County below 5000ft

Partly cloudy in the Evening, then mostly cloudy with a 20 percent chance of rain Showers after midnight. Lows in the lower 40s. Northwest Winds 5 to 15 Mph shifting to the north 10 to 15 Mph after midnight. Gusts up to 40 Mph.

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Great Falls Temperature Statistics

May Temperature

Great Falls, Great Falls International Airport (3.7 miles)

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Climate (2021–Present)

Great Falls, Great Falls International Airport (3.7 miles)

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  • Average Low 2021–2026

    34.4 °F

  • Average 2021–2026

    47 °F

  • Average High 2021–2026

    59.1 °F
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