Norwalk Weather Forecast

    • 40
    • 61

    Becoming Sunny

    • 45
    • 64

    Partly Sunny

    • 48
    • 66

    Mostly Cloudy

    • 48
    • 67

    Mostly Cloudy

    • 50
    • 64

    Chance Rain Showers

    • 53
    • 68

    Mostly Cloudy

Today 22 Sep Monroe

Mostly cloudy with a 40 percent chance of Showers. Lows in the mid 50s. Highs in the upper 60s.

Tonight 22 Sep Monroe

Partly cloudy this Evening, then becoming mostly clear. Lows in the upper 30s. Light Winds.

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  • 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

    67.3 °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

    47.7 °F

  • Average High 2021–2026

    58.4 °F
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