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.
Whitewater Lake Temperature Statistics
April Temperature
Janesville-Rock County (19.9 miles)
Lowest 7 April, 2026
23 °FAverage April
47.9 °FHighest 17 April, 2026
78.8 °F
Climate (2021–Present)
Janesville-Rock County (19.9 miles)
Average Low 2021–2026
40.4 °FAverage 2021–2026
48.8 °FAverage High 2021–2026
60.4 °F