Barten Airport Weather Forecast

    • 75
    • 91

    Slight Chance Thunderstorms

    • 69
    • 89

    Rain Showers Likely

    • 65
    • 82

    Chance Thunderstorms

    • 68
    • 84

    Slight Chance Thunderstorms

    • 69
    • 89

    Mostly Sunny

    • 69
    • 89

    Chance Thunderstorms

Today 23 Jul Walworth

Very warm and humid. Partly sunny with a 20 percent chance of light Showers and Thunderstorms in the Morning, then mostly sunny in the late morning and afternoon. Highs in the lower 90s. South Winds 10 to 15 Mph. Highest heat index Readings 101 to 106 in the late morning and afternoon.

Tonight 23 Jul Walworth

Partly cloudy. Near steady temperature in the lower 70s. South Winds 5 to 10 Mph.

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Barten Airport Temperature Statistics

July Temperature

Janesville-Rock County (16.2 miles)

  • Lowest 18 July, 2025

    50 °F

  • Average July

    70.5 °F

  • Highest 3 July, 2025

    89.6 °F

Climate (2020–Present)

Janesville-Rock County (16.2 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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