Norwalk Weather Forecast

    • 55
    • 65

    Rain Showers

    • 50
    • 65

    Rain Showers Likely

    • 45
    • 65

    Chance Rain Showers

    • 43
    • 61

    Slight Chance Rain Showers

    • 41
    • 61

    Partly Sunny

    • 43
    • 65

    Partly Sunny

Today 18 Sep Monroe

Patchy fog this morning. A chance of Showers this Morning, then Showers with a slight chance of Thunderstorms this afternoon. Highs in the mid 60s. East Winds 5 to 10 Mph. Chance of rain 100 percent.

Tonight 18 Sep Monroe

Showers. A slight chance of Thunderstorms in the Evening, then a chance of Thunderstorms after midnight. Some Thunderstorms may produce heavy rainfall in the evening. Some Thunderstorms may produce heavy rainfall after midnight. Locally heavy rainfall possible. Lows in the mid 50s. East Winds 10 to 15 Mph with Gusts up to 30 Mph. Chance of rain 100 percent.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Norwalk Temperature Statistics

September Temperature

Sparta, Sparta / Fort McCoy Airport (9.9 miles)

  • Lowest 14 September, 2026

    36.9 °F

  • Average September

    68.7 °F

  • Highest 1 September, 2026

    91 °F

Climate (2021–2026)

Sparta, Sparta / Fort McCoy Airport (9.9 miles)

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  • Average Low 2021–2026

    35.2 °F

  • Average 2021–2026

    47.8 °F

  • Average High 2021–2026

    58.5 °F
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