Great Falls Weather Forecast

    • 44
    • 68

    Patchy Smoke

    • 48
    • 79

    Patchy Smoke

    • 51
    • 89

    Mostly Sunny

    • 55
    • 96

    Sunny

    • 57
    • 99

    Hot

    • 58
    • 96

    Mostly Sunny

    • 56
    • 90

    Partly Sunny

Today 3 Aug Cascade County below 5000ft

Cooler. Mostly sunny. Patchy smoke early in the afternoon. Highs in the mid 60s. Northwest Winds 5 to 10 Mph.

Tonight 3 Aug Cascade County below 5000ft

Mostly clear. Patchy smoke in the late evening and overnight. Lows in the mid 40s. Northeast Winds 5 to 10 Mph shifting to the south after midnight.

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Great Falls Temperature Statistics

August Temperature

Great Falls, Great Falls International Airport (3.7 miles)

  • Lowest 1 August, 2026

    59 °F

  • Average August

    80.8 °F

  • Highest 1 August, 2026

    100.9 °F

Climate (2021–2026)

Great Falls, Great Falls International Airport (3.7 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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