Winterset Weather Forecast

    • 72
    • 93

    Mostly Sunny

    • 71
    • 93

    Slight Chance Thunderstorms

    • 70
    • 90

    Slight Chance Thunderstorms

    • 73
    • 90

    Partly Sunny

    • 74
    • 96

    Chance Rain Showers

    • 70
    • 91

    Chance Rain Showers

Today 4 Sep Madison

Mostly sunny. Humid with Highs in the mid 90s. Southwest Winds 5 to 10 Mph. Heat index Values up to 104.

Tonight 4 Sep Madison

Mostly clear. Near steady temperature in the upper 70s. South Winds 5 to 10 Mph with Gusts up to 20 Mph.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Winterset Temperature Statistics

September Temperature

Des Moines International Airport (23 miles)

  • Lowest 1 September, 2026

    75 °F

  • Average September

    84.9 °F

  • Highest 1 September, 2026

    96.1 °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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