Whitewater Lake Weather Forecast

    • 28
    • 42

    Chance Rain/Snow

    • 45
    • 64

    Rain Showers Likely

    • 42
    • 62

    Rain Showers Likely

    • 35
    • 57

    Slight Chance Rain Showers

    • 45
    • 59

    Chance Rain Showers

    • 60
    • 73

    Rain Showers Likely

Today 7 Apr Walworth

Sunny. Highs around 40. Northeast Winds up to 5 Mph shifting to the southeast in the afternoon.

Tonight 7 Apr Walworth

Partly cloudy in the evening then becoming mostly cloudy. Chance of light snow after midnight. Chance of light Snow, possibly mixed with rain early in the morning. Lows in the upper 20s. Southeast Winds 5 to 15 Mph. Chance of precipitation 40 percent.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Whitewater Lake Temperature Statistics

April Temperature

Janesville-Rock County (19.9 miles)

  • Lowest 1 April, 2026

    33.8 °F

  • Average April

    41.7 °F

  • Highest 2 April, 2026

    66.2 °F

Climate (2021–Present)

Janesville-Rock County (19.9 miles)

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  • Average Low 2021–2026

    40.4 °F

  • Average 2021–2026

    48.7 °F

  • Average High 2021–2026

    60.4 °F
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