South Beloit Weather Forecast
- 56
- 75
Rain Showers Likely
- 55
- 77
Increasing Clouds
- 54
- 71
Rain Showers Likely
- 50
- 73
Partly Sunny
- 55
- 76
Rain Showers Likely
- 53
- 75
Rain Showers Likely
- 54
- 76
Slight Chance Thunderstorms
Today 19 Jun Winnebago
Partly cloudy. Temperatures in the mid 70s. West Winds around 10 Mph.
Tonight 19 Jun Winnebago
Mostly cloudy early in the evening then clearing. Showers likely early in the evening. A slight chance of Thunderstorms early in the evening. A chance of Showers late in the evening. Lows in the mid 50s. Southwest Winds 5 to 10 Mph. Chance of precipitation 60 percent.
South Beloit Temperature Statistics
June Temperature
Janesville-Rock County (8.7 miles)
Lowest 3 June, 2026
44.6 °FAverage June
66.4 °FHighest 4 June, 2026
87.8 °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
60.4 °F