South Beloit Weather Forecast
- 65
- 81
Severe Tstms
- 64
- 82
Chance Thunderstorms
- 61
- 79
Rain Showers Likely
- 60
- 76
Rain Showers Likely
- 64
- 78
Rain Showers Likely
- 60
- 78
Slight Chance Rain Showers
Today 11 Aug Winnebago
Mostly cloudy. Showers and Thunderstorms, mainly in the morning. Some Thunderstorms may be severe until late afternoon. Locally heavy rainfall possible until late afternoon. Humid with Highs in the lower 80s. South Winds around 5 Mph. Chance of precipitation 80 percent.
Tonight 11 Aug Winnebago
Partly cloudy in the Evening, then becoming mostly cloudy. A slight chance of Showers and Thunderstorms after midnight. A chance of Showers and Thunderstorms late. Humid with Lows in the mid 60s. East Winds around 5 Mph in the Evening, becoming light and variable. Chance of precipitation 40 percent.
South Beloit Temperature Statistics
August Temperature
Janesville-Rock County (8.7 miles)
Lowest 3 August, 2026
53.6 °FAverage August
68.5 °FHighest 4 August, 2026
84.2 °F
Climate (2021–2026)
Janesville-Rock County (8.7 miles)
Average Low 2021–2026
40.3 °FAverage 2021–2026
48.7 °FAverage High 2021–2026
60.3 °F