Darien Weather Forecast

    • 31
    • 54

    Rain/Snow

    • 23
    • 38

    Snow Likely

    • 21
    • 35

    Mostly Cloudy

    • 15
    • 30

    Mostly Cloudy

    • 17
    • 30

    Partly Sunny

    • 27
    • 40

    Mostly Cloudy

Today 19 Feb Walworth

Partly sunny. Chance of light rain early in the afternoon. Light rain likely late in the afternoon. Highs in the mid 50s. Northeast Winds up to 10 Mph. Chance of rain 60 percent.

Tonight 19 Feb Walworth

Light rain until early Morning, then light rain and snow early in the morning. No snow accumulation. Lows in the lower 30s. Northeast Winds 5 to 10 Mph shifting to the south 10 to 15 Mph after midnight. Chance of precipitation 90 percent.

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Darien Temperature Statistics

February Temperature

Janesville-Rock County (16.8 miles)

  • Lowest 4 February, 2026

    -4 °F

  • Average February

    25.8 °F

  • Highest 16 February, 2026

    64.4 °F

Climate (2021–Present)

Janesville-Rock County (16.8 miles)

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  • Average Low 2021–2026

    40.4 °F

  • Average 2021–2026

    48.8 °F

  • Average High 2021–2026

    60.4 °F
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