Norwalk Weather Forecast

    • 68
    • 91

    Slight Chance Thunderstorms

    • 67
    • 87

    Chance Rain Showers

    • 65
    • 86

    Chance Rain Showers

    • 65
    • 84

    Chance Rain Showers

    • 66
    • 86

    Slight Chance Thunderstorms

    • 65
    • 86

    Partly Sunny

Today 31 Aug Monroe

Partly sunny. A slight chance of Showers this afternoon. Warmer with Highs in the lower 90s. Southwest Winds 5 to 10 Mph. Chance of rain 20 percent. Heat index Values up to 100 this afternoon.

Tonight 31 Aug Monroe

Partly cloudy. A slight chance of Showers and Thunderstorms in the evening. Humid with Lows in the upper 60s. West Winds around 5 Mph in the Evening, becoming light and variable. Chance of rain 20 percent. Heat index Values in the mid 90s early in the evening.

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Norwalk Temperature Statistics

August Temperature

Sparta, Sparta / Fort McCoy Airport (9.9 miles)

  • Lowest 20 August, 2026

    43.7 °F

  • Average August

    68.6 °F

  • Highest 11 August, 2026

    86.5 °F

Climate (2021–2026)

Sparta, Sparta / Fort McCoy Airport (9.9 miles)

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  • Average Low 2021–2026

    35.1 °F

  • Average 2021–2026

    47.7 °F

  • Average High 2021–2026

    58.4 °F
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