Darien Weather Forecast

    • 48
    • 71

    Partly Sunny

    • 51
    • 70

    Mostly Cloudy

    • 49
    • 72

    Mostly Cloudy

    • 45
    • 64

    Mostly Cloudy

    • 47
    • 62

    Mostly Cloudy

    • 47
    • 68

    Mostly Cloudy

Today 23 Oct Walworth

Partly sunny in the morning then clearing. Patchy dense fog in the morning. Highs around 70. Southeast Winds up to 10 Mph.

Tonight 23 Oct Walworth

Partly cloudy. Lows in the upper 40s. Southeast Winds up to 5 Mph.

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Darien Temperature Statistics

October Temperature

Janesville-Rock County (16.8 miles)

  • Lowest 17 October, 2026

    32 °F

  • Average October

    54.8 °F

  • Highest 12 October, 2026

    86 °F

Climate (2021–2026)

Janesville-Rock County (16.8 miles)

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  • Average Low 2021–2026

    40.3 °F

  • Average 2021–2026

    48.6 °F

  • Average High 2021–2026

    60.1 °F
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