Current conditions at
Janesville-Rock County (KJVL)
Lat: 42.62°NLon: 89.04°WElev: 801ft.
Fair
88°F
31°C
| Humidity | 25% |
| Wind Speed | S 12 mph |
| Barometer | 29.96 in |
| Dewpoint | 48°F (9°C) |
| Visibility | 10.00 mi |
| Heat Index | 85°F (29°C) |
| Last update | 26 May 4:45 pm CDT |
Extended Forecast for
South Beloit IL
Tonight

Low: 61 °F
Partly Cloudy
Wednesday
High: 85 °F
Mostly Sunny
then Slight
Chance
T-stormsWednesday Night
Low: 54 °F
Slight Chance
T-storms then
Mostly ClearThursday

High: 75 °F
Sunny
Thursday Night

Low: 48 °F
Clear
Friday

High: 82 °F
Sunny
Friday Night

Low: 55 °F
Mostly Clear
Saturday

High: 82 °F
Sunny
Saturday Night

Low: 53 °F
Mostly Clear
Detailed Forecast
Tonight
Partly cloudy, with a low around 61. South wind around 5 mph becoming calm in the evening.
Wednesday
A slight chance of showers and thunderstorms between 3pm and 5pm. Mostly sunny, with a high near 85. Light northeast wind becoming north northeast 5 to 10 mph in the afternoon. Chance of precipitation is 20%.
Wednesday Night
A 20 percent chance of showers and thunderstorms before 11pm. Partly cloudy, with a low around 54. Northeast wind around 10 mph, with gusts as high as 25 mph.
Thursday
Sunny, with a high near 75. East northeast wind around 10 mph, with gusts as high as 20 mph.
Thursday Night
Clear, with a low around 48. East wind 5 to 10 mph becoming light after midnight.
Friday
Sunny, with a high near 82.
Friday Night
Mostly clear, with a low around 55.
Saturday
Sunny, with a high near 82.
Saturday Night
Mostly clear, with a low around 53.
Sunday
Sunny, with a high near 80.
Sunday Night
Mostly clear, with a low around 52.
Monday
Sunny, with a high near 80.
Monday Night
Mostly clear, with a low around 52.
Tuesday
Sunny, with a high near 81.
Additional Forecasts and Information
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ABOUT THIS FORECAST
Point Forecast:
South Beloit IL
42.5°N 89.05°W
42.5°N 89.05°W
2:46 pm CDT May 26, 2026
4pm CDT May 26, 2026-6pm CDT Jun 2, 2026


