Darien Weather Forecast

    • 25
    • 62

    Rain Likely

    • 21
    • 43

    Partly Sunny

    • 34
    • 48

    Partly Sunny

    • 45
    • 61

    Mostly Cloudy

    • 43
    • 69

    Chance Rain

    • 47
    • 61

    Chance Rain

Today 26 Mar Walworth

Mostly cloudy in the Morning, then slight chance of light rain Showers late in the morning. Cloudy with light rain Showers and slight chance of Thunderstorms in the afternoon. Highs in the lower 60s. Northeast Winds up to 10 Mph increasing to 10 to 15 Mph in the afternoon. Chance of precipitation 80 percent.

Tonight 26 Mar Walworth

Much Colder. Mostly cloudy. A 30 percent chance of light rain Showers in the evening. Lows in the mid 20s. Northeast Winds 10 to 20 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

    38.2 °F

  • Highest 21 March, 2026

    77 °F

Climate (2021–Present)

Janesville-Rock County (16.8 miles)

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  • Average Low 2021–2026

    40.4 °F

  • Average 2021–2026

    48.7 °F

  • Average High 2021–2026

    60.4 °F
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