Norwalk Weather Forecast

    • 67
    • 83

    Slight Chance Thunderstorms

    • 71
    • 87

    Chance Rain Showers

    • 71
    • 95

    Rain Showers

    • 63
    • 85

    Partly Sunny

    • 63
    • 83

    Mostly Sunny

    • 65
    • 85

    Slight Chance Thunderstorms

Today 6 Sep Warren

Partly sunny this Morning, then becoming mostly cloudy. A slight chance of Thunderstorms. A slight chance of Showers. Highs in the mid 80s. East Winds 5 to 10 Mph. Chance of rain 20 percent.

Tonight 6 Sep Warren

Mostly cloudy with a 20 percent chance of Showers. Humid with Lows in the upper 60s. East Winds 5 to 10 Mph.

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Norwalk Temperature Statistics

September Temperature

Des Moines International Airport (3.7 miles)

  • Lowest 4 September, 2026

    75 °F

  • Average September

    86 °F

  • Highest 1 September, 2026

    96.7 °F

Climate (2021–2026)

Des Moines International Airport (3.7 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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