Hazardous Weather Conditions
Current conditions at
Janesville-Rock County (KJVL)
Lat: 42.62°NLon: 89.04°WElev: 801ft.
Overcast
54°F
12°C
| Humidity | 44% |
| Wind Speed | E 16 mph |
| Barometer | 30.31 in |
| Dewpoint | 32°F (0°C) |
| Visibility | 10.00 mi |
| Wind Chill | 50°F (10°C) |
| Last update | 21 May 11:45 am CDT |
Extended Forecast for
South Beloit IL
Today

High: 60 °F
Slight Chance
SprinklesTonight

Low: 45 °F
Mostly Cloudy
Friday
High: 65 °F
Partly Sunny
then Slight
Chance
ShowersFriday Night

Low: 50 °F
Chance
ShowersSaturday

High: 72 °F
Slight Chance
ShowersSaturday Night

Low: 52 °F
Slight Chance
T-stormsSunday
High: 78 °F
Partly Sunny
then Slight
Chance
T-stormsSunday Night

Low: 53 °F
Mostly Clear
Memorial Day

High: 82 °F
Mostly Sunny
Detailed Forecast
Today
A slight chance of sprinkles before 1pm. Mostly cloudy, with a high near 60. East wind 10 to 15 mph, with gusts as high as 20 mph.
Tonight
Mostly cloudy, with a low around 45. East northeast wind 10 to 15 mph.
Friday
A 20 percent chance of showers after 1pm. Partly sunny, with a high near 65. East wind around 15 mph, with gusts as high as 25 mph.
Friday Night
A 50 percent chance of showers. Cloudy, with a low around 50. East wind 10 to 15 mph, with gusts as high as 25 mph.
Saturday
A 20 percent chance of showers before 1pm. Mostly cloudy, with a high near 72. Northeast wind around 10 mph becoming west northwest in the afternoon.
Saturday Night
A 20 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 52.
Sunday
A 20 percent chance of showers and thunderstorms after 1pm. Partly sunny, with a high near 78.
Sunday Night
Mostly clear, with a low around 53.
Memorial Day
Mostly sunny, with a high near 82.
Monday Night
Partly cloudy, with a low around 56.
Tuesday
Mostly sunny, with a high near 84.
Tuesday Night
A chance of showers. Partly cloudy, with a low around 59.
Wednesday
A chance of showers. Partly sunny, with a high near 84.
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
10:11 am CDT May 21, 2026
11am CDT May 21, 2026-6pm CDT May 27, 2026



