Great Falls Weather Forecast

    • 60
    • 86

    Patchy Smoke

    • 60
    • 88

    Decreasing Clouds

    • 62
    • 92

    Slight Chance Thunderstorms

    • 63
    • 97

    Slight Chance Thunderstorms

    • 64
    • 99

    Slight Chance Thunderstorms

    • 61
    • 99

    Hot

    • 60
    • 96

    Mostly Sunny

Today 20 Jul Cascade County below 5000ft

Mostly sunny. Patchy smoke. Highs in the lower 80s. North Winds 5 to 10 Mph.

Tonight 20 Jul Cascade County below 5000ft

Mostly cloudy. Patchy smoke until early morning. Lows in the upper 50s. Northeast Winds 5 to 15 Mph.

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Great Falls Temperature Statistics

July Temperature

Great Falls, Great Falls International Airport (3.7 miles)

  • Lowest 6 July, 2026

    44.7 °F

  • Average July

    70.6 °F

  • Highest 11 July, 2026

    97.6 °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 °F
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