Hazardous Weather Conditions

Current conditions at

Janesville-Rock County (KJVL)

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

Mostly Cloudy

75°F

24°C

Humidity 83%
Wind Speed S 9 mph
Barometer 29.69 in
Dewpoint 70°F (21°C)
Visibility 10.00 mi
Last update 10 Jun 6:45 pm CDT
Detailed forecast for

Rock County

Late This Afternoon
Showers and chance of thunderstorms. Some thunderstorms may be severe. Locally heavy rainfall possible. Southwest winds 15 to 20 mph with gusts to around 40 mph. Chance of precipitation 90 percent.
Tonight
Mostly cloudy. Showers and chance of thunderstorms in the evening, then chance of showers and thunderstorms late in the evening. Patchy fog early in the morning. Some thunderstorms may be severe in the evening. Lows in the upper 60s. Southwest winds 10 to 20 mph decreasing to 5 to 10 mph after midnight. Chance of precipitation 80 percent.
Thursday
Chance of showers and thunderstorms in the late morning and early afternoon. Showers with thunderstorms likely late in the afternoon. Locally heavy rainfall possible late in the afternoon. Highs in the lower 80s. Southwest winds 5 to 10 mph shifting to the south 10 to 20 mph in the afternoon. Chance of precipitation near 100 percent.
Thursday Night
Cooler. Cloudy with a 50 percent chance of light rain showers and thunderstorms in the evening, then partly cloudy in the late evening and overnight. Lows in the mid 50s. West winds 5 to 20 mph.
Friday
Sunny. Highs in the upper 70s. West winds 10 to 20 mph.
Friday Night
Clear. Lows in the upper 50s. Southwest winds 5 to 10 mph.
Saturday
Sunny in the morning, then partly sunny with a 40 percent chance of light showers and thunderstorms in the afternoon. Highs in the lower 80s.
Saturday Night
Mostly cloudy with rain showers likely and chance of thunderstorms through around midnight, then partly cloudy with chance of light rain showers after midnight. Lows in the mid 50s. Chance of precipitation 60 percent.
Sunday
Mostly sunny. Cooler. Highs in the lower 70s.
Sunday Night
Partly cloudy. Lows in the lower 50s.
Monday
Partly sunny. Highs in the mid 70s.
Monday Night
Partly cloudy. Lows in the lower 50s.
Tuesday
Partly sunny. Slight chance of light rain showers in the morning, then chance of light rain showers and thunderstorms in the afternoon. Highs in the mid 70s. Chance of precipitation 40 percent.
Tuesday Night
Partly cloudy with a 20 percent chance of light rain showers and thunderstorms. Lows in the lower 50s.
Wednesday
Mostly sunny. A 20 percent chance of light rain showers and thunderstorms in the afternoon. Highs in the upper 70s.



Basemap Options
Click map to change the forecast location
Loading map...
430 PM CDT Wed Jun 10 2026
 
 

Additional Resources

Radar & Satellite Image

Link to Local Radar Data Link to Satellite Data

Hourly Weather Forecast

National Digital Forecast Database