Lewistown Weather Forecast

    • 69
    • 88

    Chance Thunderstorms

    • 67
    • 85

    Slight Chance Thunderstorms

    • 67
    • 87

    Mostly Sunny

    • 68
    • 88

    Mostly Sunny

    • 71
    • 90

    Mostly Sunny

    • 72
    • 92

    Mostly Sunny

Today 10 Jul Lewis

Partly sunny. Scattered Showers and Thunderstorms in the afternoon. Humid with Highs in the mid 80s. North Winds around 5 Mph. Chance of rain 30 percent.

Tonight 10 Jul Lewis

Partly cloudy. Patchy fog. Near steady temperature in the lower 70s. Light and variable Winds.

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  • Temperature Real-Time

Lewistown Temperature Statistics

July Temperature

Keokuk Municipal Airport (32.9 miles)

  • Lowest 7 July, 2026

    64.4 °F

  • Average July

    79.4 °F

  • Highest 1 July, 2026

    91.4 °F

Climate (2021–2026)

Keokuk Municipal Airport (32.9 miles)

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  • Average Low 2021–2026

    43.9 °F

  • Average 2021–2026

    53.7 °F

  • Average High 2021–2026

    63.4 °F
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