Fort Madison Weather Forecast

    • 65
    • 82

    Becoming Sunny

    • 66
    • 86

    Slight Chance Thunderstorms

    • 62
    • 82

    Mostly Sunny

    • 61
    • 80

    Mostly Cloudy

    • 63
    • 79

    Partly Sunny

    • 66
    • 83

    Slight Chance Thunderstorms

Today 20 Aug Lee

Areas of fog this morning. Mostly sunny. Highs in the lower 80s. Northeast Winds around 5 Mph.

Tonight 20 Aug Lee

Mostly clear. Humid with Lows in the mid 60s. East Winds around 5 Mph, becoming south after midnight.

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Fort Madison Temperature Statistics

August Temperature

Fort Madison Municipal Airport (1.9 miles)

  • Lowest 3 August, 2026

    60.8 °F

  • Average August

    75 °F

  • Highest 11 August, 2026

    89.6 °F

Climate (2021–2026)

Fort Madison Municipal Airport (1.9 miles)

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  • Average Low 2021–2026

    45.4 °F

  • Average 2021–2026

    55 °F

  • Average High 2021–2026

    64.7 °F
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