Norwalk Weather Forecast

    • 68
    • 85

    Rain Showers

    • 66
    • 87

    Chance Rain Showers

    • 62
    • 84

    Chance Rain Showers

    • 62
    • 82

    Chance Rain Showers

    • 63
    • 80

    Chance Rain Showers

    • 65
    • 82

    Chance Rain Showers

Today 3 Sep Monroe

A chance of Thunderstorms. Showers likely. Highs in the mid 80s. South Winds around 5 Mph. Chance of rain 70 percent.

Tonight 3 Sep Monroe

Partly cloudy in the Evening, then becoming mostly cloudy. A chance of Thunderstorms. A chance of Showers in the Evening, then Showers after midnight. Humid with Lows in the upper 60s. Light Winds. Chance of rain 90 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 1 September, 2026

    66.7 °F

  • Average September

    76.7 °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

    47.7 °F

  • Average High 2021–2026

    58.4 °F
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