Great Falls Weather Forecast

    • 44
    • 73

    Decreasing Clouds

    • 39
    • 71

    Rain Showers

    • 38
    • 63

    Chance Rain Showers

    • 43
    • 70

    Partly Sunny

    • 51
    • 77

    Mostly Cloudy

    • 56
    • 87

    Partly Sunny

Today 11 Jun Cascade County below 5000ft

Warmer. Mostly sunny. A 20 percent chance of rain Showers in the morning. Highs 67 to 73. West Winds 10 to 20 Mph.

Tonight 11 Jun Cascade County below 5000ft

Mostly clear. Lows in the mid 40s. West Winds up to 15 Mph. Gusts up to 30 Mph in the evening.

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Great Falls Temperature Statistics

June Temperature

Great Falls, Great Falls International Airport (3.7 miles)

  • Lowest 1 June, 2026

    40.6 °F

  • Average June

    56.1 °F

  • Highest 5 June, 2026

    79.6 °F

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

    47.1 °F

  • Average High 2021–2026

    59.2 °F
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