Great Falls Weather Forecast

    • 71
    • 89

    Rain Showers Likely

    • 70
    • 86

    Chance Thunderstorms

    • 69
    • 92

    Mostly Sunny

    • 70
    • 93

    Mostly Sunny

    • 69
    • 92

    Partly Sunny

    • 70
    • 91

    Slight Chance Thunderstorms

Today 1 Jul Chester

Partly sunny. A chance of Showers and Thunderstorms this afternoon. Highs in the upper 80s. South Winds 5 to 10 Mph. Chance of rain 50 percent.

Tonight 1 Jul Chester

A chance of Thunderstorms. Showers likely. Lows around 70. South Winds 5 to 10 Mph. Chance of rain 70 percent.

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Great Falls Temperature Statistics

July Temperature

Lancaster County-mc Whirter Field (10.6 miles)

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  • Average July

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Climate (2020–Present)

Lancaster County-mc Whirter Field (10.6 miles)

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  • Average Low 2020–2025

    52 °F

  • Average 2020–2025

    62.3 °F

  • Average High 2020–2025

    73.7 °F
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