Current conditions at
Janesville-Rock County (KJVL)
Lat: 42.62°NLon: 89.04°WElev: 801ft.
A Few Clouds
68°F
20°C
| Humidity | 88% |
| Wind Speed | Calm |
| Barometer | 30.00 in |
| Dewpoint | 64°F (18°C) |
| Visibility | 10.00 mi |
| Last update | 17 Aug 8:45 pm CDT |
Extended Forecast for
Janesville WI
Tonight
Low: 59 °F
Mostly Clear
Tuesday
High: 78 °F
Partly Sunny
then Showers
LikelyTuesday Night
Low: 60 °F
Chance
T-storms then
Chance
ShowersWednesday
High: 77 °F
Mostly Sunny
Wednesday Night
Low: 55 °F
Partly Cloudy
Thursday
High: 78 °F
Sunny
Thursday Night
Low: 58 °F
Mostly Clear
then Slight
Chance
ShowersFriday
High: 78 °F
Chance
ShowersFriday Night
Low: 60 °F
Chance
Showers
Detailed Forecast
Tonight
Mostly clear, with a low around 59. Calm wind becoming southwest around 5 mph.
Tuesday
Showers likely and possibly a thunderstorm before 4pm, then a chance of showers and thunderstorms between 4pm and 5pm, then showers likely and possibly a thunderstorm after 5pm. Mostly cloudy, with a high near 78. Southwest wind 5 to 10 mph. Chance of precipitation is 60%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Tuesday Night
A 50 percent chance of showers and thunderstorms before 1am. Mostly cloudy, with a low around 60. West wind around 5 mph becoming calm in the evening.
Wednesday
Mostly sunny, with a high near 77. Calm wind becoming north around 5 mph in the afternoon.
Wednesday Night
Partly cloudy, with a low around 55. Calm wind.
Thursday
Sunny, with a high near 78. Calm wind becoming southwest around 5 mph in the afternoon.
Thursday Night
A 20 percent chance of showers after 1am. Mostly clear, with a low around 58. Southwest wind around 5 mph becoming calm.
Friday
A slight chance of showers, then a chance of showers and thunderstorms after 1pm. Mostly sunny, with a high near 78. Southwest wind 5 to 10 mph. Chance of precipitation is 30%.
Friday Night
A chance of showers and thunderstorms before 1am, then a slight chance of showers. Partly cloudy, with a low around 60. Chance of precipitation is 40%.
Saturday
A 20 percent chance of showers and thunderstorms after 1pm. Mostly sunny, with a high near 75.
Saturday Night
Mostly clear, with a low around 56.
Sunday
Mostly sunny, with a high near 74.
Sunday Night
Partly cloudy, with a low around 55.
Monday
Mostly sunny, with a high near 75.
Additional Forecasts and Information
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Forecast AreaABOUT THIS FORECAST
Point Forecast:
Janesville WI
42.69°N 89.01°W (Elev. 863 ft)
42.69°N 89.01°W (Elev. 863 ft)
9:12 pm CDT Aug 17, 2026
9pm CDT Aug 17, 2026-6pm CDT Aug 24, 2026
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