Lewistown Weather Forecast

    • 40
    • 81

    Slight Chance Rain

    • 37
    • 61

    Breezy

    • 42
    • 72

    Mostly Sunny

    • 46
    • 77

    Sunny

    • 45
    • 78

    Mostly Sunny

    • 46
    • 79

    Mostly Sunny

    • 46
    • 76

    Partly Sunny

Today 4 Oct Fergus County below 4500ft

Warmer, sunny. Highs 80 to 85. South Winds 5 to 10 Mph increasing to 10 to 20 Mph in the afternoon.

Tonight 4 Oct Fergus County below 4500ft

Very windy. Mostly cloudy with a 20 percent chance of rain in the Evening, then mostly clear after midnight. Lows 40 to 50. West Winds 20 to 30 Mph increasing to 25 to 40 Mph after midnight. Gusts up to 60 Mph.

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Lewistown Temperature Statistics

October Temperature

Lewistown, Lewistown Municipal Airport (1.2 miles)

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  • Average October

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Climate (2019–Present)

Lewistown, Lewistown Municipal Airport (1.2 miles)

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  • Average Low 2019–2024

    32.2 °F

  • Average 2019–2024

    44.1 °F

  • Average High 2019–2024

    55.9 °F
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