Lewistown Weather Forecast

    • 47
    • 71

    Becoming Sunny

    • 48
    • 79

    Partly Sunny

    • 56
    • 81

    Mostly Sunny

    • 34
    • 69

    Mostly Cloudy

    • 34
    • 51

    Mostly Cloudy

    • 40
    • 57

    Mostly Cloudy

Today 19 Mar Lewis

Sunny. Highs in the lower 70s. South Winds around 5 Mph.

Tonight 19 Mar Lewis

Partly cloudy. Lows in the upper 40s. East Winds around 5 Mph, becoming southwest after midnight.

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Lewistown Temperature Statistics

March Temperature

Keokuk Municipal Airport (32.9 miles)

  • Lowest 16 March, 2026

    12.2 °F

  • Average March

    41.7 °F

  • Highest 6 March, 2026

    71.6 °F

Climate (2021–Present)

Keokuk Municipal Airport (32.9 miles)

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  • Average Low 2021–2026

    43.8 °F

  • Average 2021–2026

    53.5 °F

  • Average High 2021–2026

    63.2 °F
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