South Beloit Weather Forecast
- 70
- 92
Thunderstorms Likely
- 57
- 82
Chance Rain Showers
- 61
- 82
Partly Sunny
- 66
- 87
Chance Thunderstorms
- 64
- 85
Chance Thunderstorms
- 64
- 86
Chance Thunderstorms
Today 5 Jul Winnebago
Partly cloudy late morning through mid Afternoon, then becoming mostly cloudy. A chance of Showers and Thunderstorms late in the afternoon. Breezy. Highs in the lower 90s. Southwest Winds 10 to 15 Mph with Gusts up to 30 Mph. Chance of precipitation 40 percent. Heat index Values up to 100.
Tonight 5 Jul Winnebago
Mostly cloudy. Showers likely in the evening. A chance of Thunderstorms. A chance of Showers after midnight. Lows around 70. Southwest Winds 10 to 15 Mph. Gusts up to 25 Mph in the evening. Chance of precipitation 70 percent.
South Beloit Temperature Statistics
July Temperature
Janesville-Rock County (8.7 miles)
Lowest 1 July, 2025
60.8 °FAverage July
72.2 °FHighest 3 July, 2025
89.6 °F
Climate (2020–Present)
Janesville-Rock County (8.7 miles)
Average Low 2020–2025
40.5 °FAverage 2020–2025
48.8 °FAverage High 2020–2025
60.3 °F