Current conditions at

Janesville-Rock County (KJVL)

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

Fair

57°F

14°C

Humidity 88%
Wind Speed N 3 mph
Barometer 30.01 in
Dewpoint 54°F (12°C)
Visibility 10.00 mi
Last update 23 Aug 1:55 am CDT
Detailed forecast for

Rock County

Rest Of Tonight
Clear. Lows in the lower 50s. Northwest winds up to 5 mph.
Sunday
Sunny. Highs in the mid 70s. Northwest winds 5 to 10 mph.
Sunday Night
Mostly clear. Lows around 50. Northwest winds up to 5 mph through around midnight becoming calm.
Monday
Sunny. Highs in the upper 70s. Northwest winds up to 5 mph.
Monday Night
Mostly clear. Lows in the lower 50s. Calm winds.
Tuesday
Partly sunny. Highs in the upper 70s.
Tuesday Night
Partly cloudy. Chance of light showers and slight chance of thunderstorms after midnight. Lows in the lower 60s. Chance of precipitation 30 percent.
Wednesday
Mostly sunny with a 50 percent chance of light showers and thunderstorms. Highs in the lower 80s.
Wednesday Night
Mostly clear. A 20 percent chance of light showers and thunderstorms through around midnight. Lows in the lower 60s.
Thursday
Sunny. Highs in the upper 70s.
Thursday Night
Mostly clear. Lows in the upper 50s.
Friday
Sunny. Highs in the upper 70s.
Friday Night
Mostly clear. Lows in the upper 50s.
Saturday
Partly sunny with a 20 percent chance of light rain showers. Highs in the upper 70s.



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131 AM CDT Sun Aug 23 2026
 
 

Additional Resources

Radar & Satellite Image

Link to Local Radar Data Link to Satellite Data

Hourly Weather Forecast

National Digital Forecast Database