Hazardous Weather Conditions
Current conditions at
Janesville-Rock County (KJVL)
Lat: 42.62°NLon: 89.04°WElev: 801ft.
Overcast
68°F
20°C
| Humidity | 83% |
| Wind Speed | E 3 mph |
| Barometer | 30.10 in |
| Dewpoint | 63°F (17°C) |
| Visibility | 10.00 mi |
| Last update | 15 Aug 4:35 am CDT |
Extended Forecast for
Janesville WI
Overnight
Low: 65 °F
Chance
ShowersSaturday
High: 81 °F
Chance
ShowersSaturday Night
Low: 69 °F
Slight Chance
Showers then
Chance
T-stormsSunday
High: 83 °F
Slight Chance
T-stormsSunday Night
Low: 61 °F
Mostly Clear
Monday
High: 79 °F
Sunny
Monday Night
Low: 60 °F
Partly Cloudy
Tuesday
High: 80 °F
Partly Sunny
then Slight
Chance
T-stormsTuesday Night
Low: 64 °F
Showers
Detailed Forecast
Overnight
A 40 percent chance of showers and thunderstorms. Cloudy, with a low around 65. East wind around 5 mph.
Saturday
A chance of showers and thunderstorms before noon, then a slight chance of showers between noon and 1pm. Mostly cloudy, with a high near 81. East wind around 5 mph. Chance of precipitation is 40%.
Saturday Night
A slight chance of showers, then a chance of showers and thunderstorms after midnight. Mostly cloudy, with a low around 69. East wind around 5 mph becoming calm. Chance of precipitation is 40%.
Sunday
A 20 percent chance of showers and thunderstorms, mainly between 2pm and 3pm. Cloudy, then gradually becoming mostly sunny, with a high near 83. Northwest wind 5 to 10 mph.
Sunday Night
Mostly clear, with a low around 61. Northwest wind 5 to 10 mph becoming light north after midnight.
Monday
Sunny, with a high near 79. Calm wind becoming northwest around 5 mph in the afternoon.
Monday Night
Partly cloudy, with a low around 60. Calm wind.
Tuesday
A 20 percent chance of showers and thunderstorms after 1pm. Partly sunny, with a high near 80. Southwest wind 5 to 10 mph.
Tuesday Night
Showers and possibly a thunderstorm. Low around 64. Chance of precipitation is 80%.
Wednesday
A 30 percent chance of showers and thunderstorms, mainly before 1pm. Mostly cloudy, with a high near 75.
Wednesday Night
Partly cloudy, with a low around 55.
Thursday
Mostly sunny, with a high near 72.
Thursday Night
Partly cloudy, with a low around 55.
Friday
A 20 percent chance of showers. Mostly sunny, with a high near 73.
Additional Forecasts and Information
Basemap Options
Click map to change the forecast location
Loading map...
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)
4:33 am CDT Aug 15, 2026
4am CDT Aug 15, 2026-6pm CDT Aug 21, 2026
Additional Resources
Radar & Satellite Image
Hourly Weather Forecast
