Great Falls Weather Forecast

    • 48
    • 60

    Rain Showers

    • 51
    • 75

    Slight Chance Thunderstorms

    • 50
    • 76

    Chance Rain Showers

    • 51
    • 78

    Partly Sunny

    • 50
    • 78

    Chance Rain Showers

    • 51
    • 80

    Mostly Sunny

    • 55
    • 85

    Mostly Sunny

Today 29 Jun Cascade County below 5000ft

Rain and slight chance of Thunderstorms. Highs in the upper 50s. West Winds 10 to 15 Mph with Gusts to around 30 Mph. Chance of precipitation near 100 percent.

Tonight 29 Jun Cascade County below 5000ft

Rain likely and slight chance of Thunderstorms in the Evening, then chance of rain after midnight. Lows in the upper 40s. West Winds 10 to 15 Mph with Gusts to around 30 Mph. Chance of precipitation 70 percent.

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Great Falls Temperature Statistics

June Temperature

Great Falls, Great Falls International Airport (3.7 miles)

  • Lowest 14 June, 2026

    38.6 °F

  • Average June

    58.2 °F

  • Highest 16 June, 2026

    85.6 °F

Climate (2021–2026)

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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