Whitewater Lake Weather Forecast

    • 59
    • 85

    Mostly Sunny

    • 62
    • 87

    Mostly Sunny

    • 65
    • 89

    Sunny

    • 68
    • 90

    Mostly Sunny

    • 66
    • 89

    Mostly Sunny

    • 65
    • 87

    Partly Sunny

Today 11 Jul Walworth

Sunny. Highs in the mid 80s. Northeast Winds up to 10 Mph.

Tonight 11 Jul Walworth

Mostly cloudy. Near steady temperature in the lower 60s. Northeast Winds up to 5 Mph.

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Whitewater Lake Temperature Statistics

July Temperature

Janesville-Rock County (19.9 miles)

  • Lowest 7 July, 2026

    55.4 °F

  • Average July

    73 °F

  • Highest 1 July, 2026

    91.4 °F

Climate (2021–2026)

Janesville-Rock County (19.9 miles)

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  • Average Low 2021–2026

    40.3 °F

  • Average 2021–2026

    48.7 °F

  • Average High 2021–2026

    60.3 °F
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