Darien Weather Forecast

    • 13
    • 21

    Chance Snow

    • 30
    • 35

    Rain/Snow

    • 4
    • 33

    Chance Snow

    • 5
    • 19

    Chance Snow

    • -7
    • 14

    Chance Snow

    • -7
    • 5

    Cold

Today 8 Dec Walworth

Mostly cloudy. Chance of Flurries early in the afternoon. Highs in the lower 20s. South Winds 5 to 10 Mph.

Tonight 8 Dec Walworth

Not as cold. Cloudy. Slight chance of light snow through around Midnight, then light snow Likely, possibly mixed with freezing drizzle after midnight. Little snow accumulation. Lows around 14. South Winds 5 to 15 Mph with Gusts to around 30 Mph. Chance of precipitation 60 percent.

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Darien Temperature Statistics

December Temperature

Janesville-Rock County (16.8 miles)

  • Lowest 4 December, 2025

    -5.8 °F

  • Average December

    19.2 °F

  • Highest 3 December, 2025

    32 °F

Climate (2020–Present)

Janesville-Rock County (16.8 miles)

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  • Average Low 2020–2025

    40.5 °F

  • Average 2020–2025

    48.8 °F

  • Average High 2020–2025

    60.3 °F
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