Lewistown Weather Forecast

    • 12
    • 32

    Chance Snow

    • -3
    • 17

    Snow

    • 1
    • 9

    Cold

    • 23
    • 37

    Mostly Sunny

    • 34
    • 47

    Partly Sunny

    • 37
    • 54

    Mostly Cloudy

Today 12 Dec Lewis

Cloudy. Highs in the lower 30s. North Winds 5 to 10 Mph.

Tonight 12 Dec Lewis

Cloudy, cooler with Lows around 14. Northwest Winds 5 to 10 Mph. Wind chill Values as low as 4 above.

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Lewistown Temperature Statistics

December Temperature

Keokuk Municipal Airport (32.9 miles)

  • Lowest 4 December, 2025

    3.2 °F

  • Average December

    26.1 °F

  • Highest 9 December, 2025

    46.4 °F

Climate (2020–Present)

Keokuk Municipal Airport (32.9 miles)

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  • Average Low 2020–2025

    43.5 °F

  • Average 2020–2025

    53.1 °F

  • Average High 2020–2025

    62.6 °F
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