Darien Weather Forecast

    • 62
    • 85

    Slight Chance Thunderstorms

    • 63
    • 83

    Sunny

    • 64
    • 85

    Mostly Sunny

    • 66
    • 86

    Partly Sunny

    • 72
    • 90

    Chance Rain Showers

    • 70
    • 89

    Chance Thunderstorms

    • 64
    • 84

    Chance Rain Showers

Today 30 Jun Walworth

Mostly sunny with a 20 percent chance of light Showers and Thunderstorms. Northwest Winds 5 to 10 Mph.

Tonight 30 Jun Walworth

Partly cloudy through around midnight then clearing. Lows in the lower 60s. Northwest Winds 5 to 10 Mph.

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  • Temperature Real-Time

Darien Temperature Statistics

June Temperature

Janesville-Rock County (16.8 miles)

  • Lowest 1 June, 2025

    42.8 °F

  • Average June

    68.5 °F

  • Highest 23 June, 2025

    93.2 °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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