Great Falls Weather Forecast

    • 58
    • 83

    Mostly Sunny

    • 61
    • 86

    Partly Sunny

    • 63
    • 86

    Partly Sunny

    • 60
    • 84

    Chance Thunderstorms

    • 52
    • 81

    Slight Chance Rain Showers

    • 53
    • 79

    Mostly Sunny

Today 29 Apr Chester

Mostly sunny. Highs in the lower 80s. South Winds around 5 Mph.

Tonight 29 Apr Chester

Mostly clear. Lows in the upper 50s. South Winds around 5 Mph.

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Great Falls Temperature Statistics

April Temperature

Lancaster County-mc Whirter Field (10.6 miles)

  • Lowest 13 April, 2025

    32 °F

  • Average April

    64.4 °F

  • Highest 4 April, 2025

    87.8 °F

Climate (2020–Present)

Lancaster County-mc Whirter Field (10.6 miles)

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  • Average Low 2020–2025

    51.9 °F

  • Average 2020–2025

    62.2 °F

  • Average High 2020–2025

    73.6 °F
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