Darien Weather Forecast

    • -3
    • 15

    Snow

    • -4
    • 4

    Blowing Snow

    • 9
    • 14

    Snow Likely

    • 4
    • 23

    Chance Snow

    • -2
    • 13

    Mostly Cloudy

    • -8
    • 11

    Slight Chance Snow

    • -11
    • 4

    Chance Snow

Today 18 Jan Walworth

Snow. Little new snow accumulation. Southwest Winds 5 to 10 Mph. Chance of snow near 100 percent.

Tonight 18 Jan Walworth

Bitterly cold. Breezy. Light snow through around Midnight, then chance of light snow after midnight. Areas of blowing snow after midnight. Snow accumulation up to 1 inch. Total snow accumulation up to 2 Inches. Lows around 3 below. Southwest Winds 5 to 10 Mph with Gusts to around 25 Mph increasing to northwest 15 to 25 Mph with Gusts to around 40 Mph after midnight. Chance of snow near 100 percent. Lowest wind chill Readings 14 below to 24 below zero early in the morning.

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Darien Temperature Statistics

January Temperature

Janesville-Rock County (16.8 miles)

  • Lowest 1 January, 2026

    8.6 °F

  • Average January

    28.5 °F

  • Highest 8 January, 2026

    55.4 °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

    60.3 °F
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