Areas of Severe Thunderstorms and Excessive Rainfall Friday

Scattered severe thunderstorms capable of large to very large hail, damaging winds with potentially significant gusts, and perhaps a couple of tornadoes are expected Friday afternoon into night across portions of the central Plains into upper Great Lakes. Thunderstorms with heavy to excessive rainfall may produce flooding over a part of the Midwest Friday. Read More >

Hazardous Weather Conditions

Current conditions at

Janesville-Rock County (KJVL)

Lat: 42.62°NLon: 89.04°WElev: 801ft.

Mostly Cloudy

66°F

19°C

Humidity 68%
Wind Speed Calm
Barometer 29.90 in
Dewpoint 55°F (13°C)
Visibility 10.00 mi
Last update 5 Jun 4:10 am CDT
Extended Forecast for

5 Miles SSW Janesville WI

  • Overnight

    Overnight: A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 5am.  Mostly cloudy, with a low around 64. South wind around 10 mph.  Chance of precipitation is 60%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

    Low: 64 °F

    Showers
    Likely

  • Friday

    Friday: Showers and possibly a thunderstorm before 1pm, then a chance of showers and thunderstorms, mainly between 1pm and 5pm.  High near 80. South wind 10 to 15 mph.  Chance of precipitation is 90%. New rainfall amounts between a half and three quarters of an inch possible.

    High: 80 °F

    Showers

  • Friday Night

    Friday Night: A chance of showers and thunderstorms.  Partly cloudy, with a low around 63. Southwest wind 5 to 15 mph.  Chance of precipitation is 50%.

    Low: 63 °F

    Chance
    T-storms

  • Saturday

    Saturday: A slight chance of showers before 1pm, then a slight chance of showers and thunderstorms between 1pm and 4pm.  Mostly sunny, with a high near 85. West wind around 5 mph.  Chance of precipitation is 20%.

    High: 85 °F

    Slight Chance
    Showers then
    Slight Chance
    T-storms

  • Saturday Night

    Saturday Night: Partly cloudy, with a low around 62. North wind around 5 mph becoming calm  in the evening.

    Low: 62 °F

    Partly Cloudy

  • Sunday

    Sunday: A slight chance of showers between 1pm and 4pm, then a slight chance of showers and thunderstorms after 4pm.  Partly sunny, with a high near 84. East wind 5 to 15 mph.  Chance of precipitation is 20%.

    High: 84 °F

    Partly Sunny
    then Slight
    Chance
    T-storms

  • Sunday Night

    Sunday Night: A 40 percent chance of showers and thunderstorms, mainly after 1am.  Mostly cloudy, with a low around 63. East wind 10 to 15 mph.

    Low: 63 °F

    Slight Chance
    T-storms then
    Chance
    Showers

  • Monday

    Monday: A chance of showers and thunderstorms, then showers and possibly a thunderstorm after 1pm.  High near 83. Southeast wind 10 to 15 mph.  Chance of precipitation is 80%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

    High: 83 °F

    Chance
    Showers then
    Showers

  • Monday Night

    Monday Night: Showers likely and possibly a thunderstorm before 1am, then a chance of showers and thunderstorms after 1am.  Mostly cloudy, with a low around 66. Chance of precipitation is 70%.

    Low: 66 °F

    Showers
    Likely

Detailed Forecast

Overnight
A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 5am. Mostly cloudy, with a low around 64. South wind around 10 mph. Chance of precipitation is 60%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Friday
Showers and possibly a thunderstorm before 1pm, then a chance of showers and thunderstorms, mainly between 1pm and 5pm. High near 80. South wind 10 to 15 mph. Chance of precipitation is 90%. New rainfall amounts between a half and three quarters of an inch possible.
Friday Night
A chance of showers and thunderstorms. Partly cloudy, with a low around 63. Southwest wind 5 to 15 mph. Chance of precipitation is 50%.
Saturday
A slight chance of showers before 1pm, then a slight chance of showers and thunderstorms between 1pm and 4pm. Mostly sunny, with a high near 85. West wind around 5 mph. Chance of precipitation is 20%.
Saturday Night
Partly cloudy, with a low around 62. North wind around 5 mph becoming calm in the evening.
Sunday
A slight chance of showers between 1pm and 4pm, then a slight chance of showers and thunderstorms after 4pm. Partly sunny, with a high near 84. East wind 5 to 15 mph. Chance of precipitation is 20%.
Sunday Night
A 40 percent chance of showers and thunderstorms, mainly after 1am. Mostly cloudy, with a low around 63. East wind 10 to 15 mph.
Monday
A chance of showers and thunderstorms, then showers and possibly a thunderstorm after 1pm. High near 83. Southeast wind 10 to 15 mph. Chance of precipitation is 80%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Monday Night
Showers likely and possibly a thunderstorm before 1am, then a chance of showers and thunderstorms after 1am. Mostly cloudy, with a low around 66. Chance of precipitation is 70%.
Tuesday
A 40 percent chance of showers and thunderstorms, mainly after 1pm. Partly sunny, with a high near 88.
Tuesday Night
A 40 percent chance of showers and thunderstorms. Partly cloudy, with a low around 68.
Wednesday
Partly sunny and hot, with a high near 94.
Wednesday Night
Mostly clear, with a low around 71.
Thursday
Sunny and hot, with a high near 96.
Basemap Options
Click map to change the forecast location
Loading map...

ABOUT THIS FORECAST

 
Point Forecast:
5 Miles SSW Janesville WI
 42.63°N 89.04°W (Elev. 804 ft)
4:06 am CDT Jun 5, 2026
4am CDT Jun 5, 2026-6pm CDT Jun 11, 2026
 
Get as KML Get as XML

Additional Resources

Radar & Satellite Image

Link to Local Radar Data Link to Satellite Data

Hourly Weather Forecast

National Digital Forecast Database