Darien Weather Forecast

    • 25
    • 31

    Mostly Cloudy

    • 30
    • 40

    Increasing Clouds

    • 25
    • 45

    Snow Likely

    • 11
    • 30

    Snow Likely

    • 19
    • 25

    Chance Snow

    • 13
    • 30

    Chance Snow

    • 6
    • 21

    Chance Snow

Today 11 Jan Walworth

Mostly cloudy. West Winds around 10 Mph.

Tonight 11 Jan Walworth

Mostly cloudy in the evening then becoming partly cloudy. Near steady temperature in the upper 20s. Southwest Winds 10 to 15 Mph with Gusts to around 30 Mph.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Darien Temperature Statistics

January Temperature

Janesville-Rock County (16.8 miles)

  • Lowest 1 January, 2026

    8.6 °F

  • Average January

    28.9 °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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