Winterset Weather Forecast

    • 62
    • 81

    Chance Thunderstorms

    • 56
    • 65

    Rain Showers Likely

    • 53
    • 60

    Rain Showers Likely

    • 48
    • 59

    Partly Sunny

    • 52
    • 64

    Mostly Cloudy

    • 55
    • 66

    Mostly Cloudy

Today 19 Sep Madison

Mostly cloudy with a chance of Showers and Thunderstorms in the Morning, then partly sunny with a slight chance of Showers in the afternoon. Humid with Highs in the lower 80s. Southwest Winds 5 to 10 Mph, becoming west in the afternoon. Chance of rain 50 percent.

Tonight 19 Sep Madison

Mostly cloudy with a chance of Showers and Thunderstorms. Humid with Lows in the lower 60s. North Winds 5 to 10 Mph. Chance of rain 50 percent.

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  • Temperature Forecast NOAA

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Winterset Temperature Statistics

September Temperature

Des Moines International Airport (23 miles)

  • Lowest 13 September, 2026

    56.6 °F

  • Average September

    75.7 °F

  • Highest 1 September, 2026

    96.7 °F

Climate (2021–2026)

Des Moines International Airport (23 miles)

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  • Average Low 2021–2026

    43.8 °F

  • Average 2021–2026

    53.6 °F

  • Average High 2021–2026

    63.5 °F
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