Norwalk Weather Forecast

    • 52
    • 62

    Rain Showers

    • 46
    • 69

    Mostly Cloudy

    • 43
    • 63

    Mostly Cloudy

    • 41
    • 63

    Mostly Sunny

    • 44
    • 66

    Mostly Sunny

    • 46
    • 68

    Partly Sunny

Today 19 Sep Monroe

A chance of Showers with a slight chance of Thunderstorms Early, then Showers with a chance of Thunderstorms this afternoon. Near steady temperature in the lower 60s. East Winds 5 to 10 Mph. Chance of rain 100 percent.

Tonight 19 Sep Monroe

Cloudy. A chance of Showers with a slight chance of Thunderstorms in the Evening, then a slight chance of Showers after midnight. Lows in the lower 50s. Northeast Winds 5 to 10 Mph. Chance of rain 50 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

    68.4 °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

    35.3 °F

  • Average 2021–2026

    47.8 °F

  • Average High 2021–2026

    58.5 °F
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