Darien Weather Forecast

    • 32
    • 45

    Breezy

    • 26
    • 42

    Breezy

    • 30
    • 39

    Rain/Snow

    • 14
    • 43

    Rain

    • 0
    • 23

    Mostly Cloudy

    • 15
    • 26

    Partly Sunny

Today 12 Mar Walworth

Sunny until late Afternoon, then cloudy with a 20 percent chance of light rain late in the afternoon. Highs in the mid 40s. West Winds 5 to 10 Mph shifting to the southwest 10 to 15 Mph in the afternoon.

Tonight 12 Mar Walworth

Mostly clear. Near steady temperature in the upper 20s. West Winds 5 to 10 Mph.

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Darien Temperature Statistics

March Temperature

Janesville-Rock County (16.8 miles)

  • Lowest 1 March, 2026

    10.4 °F

  • Average March

    39.5 °F

  • Highest 9 March, 2026

    71.6 °F

Climate (2021–Present)

Janesville-Rock County (16.8 miles)

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  • Average Low 2021–2026

    40.5 °F

  • Average 2021–2026

    48.8 °F

  • Average High 2021–2026

    60.4 °F
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