South Beloit Weather Forecast
- 38
- 70
Becoming Sunny
- 37
- 61
Mostly Sunny
- 40
- 62
Rain Showers
- 46
- 70
Chance Thunderstorms
- 41
- 63
Mostly Sunny
- 49
- 68
Chance Rain Showers
Today 9 May Winnebago
Partly cloudy. Breezy. Temperatures in the upper 60s. Northwest Winds 15 to 20 Mph with Gusts up to 35 Mph.
Tonight 9 May Winnebago
Mostly clear. Breezy. Lows in the upper 30s. Northwest Winds 15 to 20 Mph with Gusts up to 30 Mph, Diminishing to around 5 Mph after midnight.
South Beloit Temperature Statistics
May Temperature
Janesville-Rock County (8.7 miles)
Lowest 2 May, 2026
30.2 °FAverage May
47 °FHighest 4 May, 2026
80.6 °F
Climate (2021–Present)
Janesville-Rock County (8.7 miles)
Average Low 2021–2026
40.4 °FAverage 2021–2026
48.7 °FAverage High 2021–2026
60.4 °F