Whitewater Lake Weather Forecast

    • 42
    • 62

    Decreasing Clouds

    • 37
    • 57

    Partly Sunny

    • 33
    • 55

    Mostly Cloudy

    • 33
    • 53

    Partly Sunny

    • 39
    • 57

    Partly Sunny

    • 44
    • 66

    Chance Rain Showers

Today 28 Apr Walworth

Mostly cloudy. Highs in the lower 60s. West Winds 10 to 15 Mph.

Tonight 28 Apr Walworth

Cloudy. Lows in the upper 40s. West Winds 15 to 20 Mph.

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  • Temperature Real-Time

Whitewater Lake Temperature Statistics

April Temperature

Janesville-Rock County (19.9 miles)

  • Lowest 7 April, 2026

    23 °F
  • Average April

    47.9 °F
  • Highest 17 April, 2026

    78.8 °F

Climate (2021–Present)

Janesville-Rock County (19.9 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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