Areas of Severe Thunderstorms and Excessive Rainfall Through This Weekend

Severe thunderstorms which can bring large hail, damaging winds, and isolated tornadoes will be possible over parts of the central U.S. through this weekend. Thunderstorms with heavy to excessive rainfall moving from Texas into the mid-Mississippi Valley through this weekend may produce areas of flooding. Read More >

Hazardous Weather Conditions

Current conditions at

Janesville-Rock County (KJVL)

Lat: 42.62° N Lon: 89.04° W Elev: 801 ft.

Mostly Cloudy

NA

Humidity NA
Wind Speed SW 9 mph
Barometer 29.80 in
Dewpoint NA
Visibility 10.00 mi
Last update 5 Jun 4:45 pm CDT
Detailed forecast for

Rock County

Late This Afternoon
Mostly cloudy with chance of thunderstorms and isolated showers. Southwest winds 5 to 15 mph. Chance of precipitation 50 percent.
Tonight
Partly cloudy through around midnight then becoming mostly cloudy. Scattered showers and chance of thunderstorms. Lows in the lower 60s. Southwest winds 5 to 10 mph. Chance of precipitation 40 percent.
Saturday
Partly sunny. Slight chance of thunderstorms and isolated showers in the morning. Highs in the mid 80s. Northwest winds around 5 mph. Chance of precipitation 20 percent.
Saturday Night
Partly cloudy until early morning then becoming mostly cloudy. Lows in the lower 60s. East winds up to 5 mph.
Sunday
Partly sunny. A 20 percent chance of showers and thunderstorms in the afternoon. Highs in the lower 80s. Southeast winds 5 to 15 mph.
Sunday Night
Mostly cloudy with chance of showers and slight chance of thunderstorms. Lows in the lower 60s. Southeast winds 5 to 15 mph. Chance of precipitation 50 percent.
Monday
Showers and chance of thunderstorms. Highs in the lower 80s. Chance of precipitation near 100 percent.
Monday Night
Mostly cloudy. Light showers likely and chance of thunderstorms through around midnight, then chance of light showers and slight chance of thunderstorms after midnight. Lows in the mid 60s. Chance of precipitation 70 percent.
Tuesday
Mostly cloudy with a 40 percent chance of light showers and thunderstorms. Highs in the upper 80s.
Tuesday Night
Partly cloudy with a 30 percent chance of light showers and thunderstorms. Lows in the upper 60s.
Wednesday
Partly sunny. Highs in the lower 90s.
Wednesday Night
Mostly clear. A 20 percent chance of light showers and thunderstorms through around midnight. Lows in the lower 70s.
Thursday
Mostly sunny. Highs in the mid 90s.
Thursday Night
Partly cloudy with a 30 percent chance of light showers and thunderstorms. Lows in the lower 70s.
Friday
Partly sunny. A 30 percent chance of light showers and thunderstorms in the afternoon. Highs in the lower 90s.



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431 PM CDT Fri Jun 5 2026
 
 

Additional Resources

Radar & Satellite Image

Link to Local Radar Data Link to Satellite Data

Hourly Weather Forecast

National Digital Forecast Database