National Oceanic and Atmospheric Administration National Weather Service United States Department of Commerce

Hazardous Weather Conditions

Current conditions at

Janesville-Rock County (KJVL)

Lat: 42.62°NLon: 89.04°WElev: 801ft.

Light Rain

59°F

15°C

Humidity 94%
Wind Speed SW 9 mph
Barometer 29.77 in
Dewpoint 57°F (14°C)
Visibility 5.00 mi
Last update 12 Apr 10:30 pm CDT
Extended Forecast for

5 Miles SSW Janesville WI

  • Tonight

    Tonight: Showers and possibly a thunderstorm before midnight, then a slight chance of showers and thunderstorms between midnight and 1am. Low around 61. Southwest wind around 15 mph, with gusts as high as 30 mph. Chance of precipitation is 100%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

    Low: 61 °F

    Showers then
    Slight Chance
    T-storms

  • Monday

    Monday: A 30 percent chance of showers and thunderstorms, mainly after 5pm. Mostly cloudy, with a high near 74. South wind 10 to 15 mph.

    High: 74 °F

    Mostly Cloudy
    then Chance
    T-storms

  • Monday Night

    Monday Night: A 30 percent chance of showers and thunderstorms, mainly after 1am. Mostly cloudy, with a low around 64. South wind around 15 mph.

    Low: 64 °F

    Chance
    T-storms then
    Chance
    Showers

  • Tuesday

    Tuesday: A slight chance of showers before 7am, then a chance of showers and thunderstorms after 1pm. Partly sunny, with a high near 79. Southwest wind around 15 mph. Chance of precipitation is 50%.

    High: 79 °F

    Slight Chance
    Showers then
    Chance
    T-storms

  • Tuesday Night

    Tuesday Night: Showers and possibly a thunderstorm. Low around 58. Southwest wind around 10 mph. Chance of precipitation is 80%. New rainfall amounts between a half and three quarters of an inch possible.

    Low: 58 °F

    Showers

  • Wednesday

    Wednesday: Showers likely and possibly a thunderstorm before 10am, then showers likely between 10am and 1pm, then showers and possibly a thunderstorm after 1pm. High near 71. South wind 10 to 15 mph. Chance of precipitation is 80%. New rainfall amounts between a quarter and half of an inch possible.

    High: 71 °F

    Showers

  • Wednesday Night

    Wednesday Night: Showers likely and possibly a thunderstorm before 1am, then a chance of showers and thunderstorms after 1am. Mostly cloudy, with a low around 55. South wind around 10 mph. Chance of precipitation is 70%. New rainfall amounts between a quarter and half of an inch possible.

    Low: 55 °F

    Showers
    Likely

  • Thursday

    Thursday: A chance of showers and thunderstorms before 1pm, then a slight chance of showers. Mostly cloudy, then gradually becoming sunny, with a high near 74. West wind 10 to 15 mph. Chance of precipitation is 30%.

    High: 74 °F

    Chance
    Showers

  • Thursday Night

    Thursday Night: Mostly clear, with a low around 54.

    Low: 54 °F

    Mostly Clear

Detailed Forecast

Tonight
Showers and possibly a thunderstorm before midnight, then a slight chance of showers and thunderstorms between midnight and 1am. Low around 61. Southwest wind around 15 mph, with gusts as high as 30 mph. Chance of precipitation is 100%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Monday
A 30 percent chance of showers and thunderstorms, mainly after 5pm. Mostly cloudy, with a high near 74. South wind 10 to 15 mph.
Monday Night
A 30 percent chance of showers and thunderstorms, mainly after 1am. Mostly cloudy, with a low around 64. South wind around 15 mph.
Tuesday
A slight chance of showers before 7am, then a chance of showers and thunderstorms after 1pm. Partly sunny, with a high near 79. Southwest wind around 15 mph. Chance of precipitation is 50%.
Tuesday Night
Showers and possibly a thunderstorm. Low around 58. Southwest wind around 10 mph. Chance of precipitation is 80%. New rainfall amounts between a half and three quarters of an inch possible.
Wednesday
Showers likely and possibly a thunderstorm before 10am, then showers likely between 10am and 1pm, then showers and possibly a thunderstorm after 1pm. High near 71. South wind 10 to 15 mph. Chance of precipitation is 80%. New rainfall amounts between a quarter and half of an inch possible.
Wednesday Night
Showers likely and possibly a thunderstorm before 1am, then a chance of showers and thunderstorms after 1am. Mostly cloudy, with a low around 55. South wind around 10 mph. Chance of precipitation is 70%. New rainfall amounts between a quarter and half of an inch possible.
Thursday
A chance of showers and thunderstorms before 1pm, then a slight chance of showers. Mostly cloudy, then gradually becoming sunny, with a high near 74. West wind 10 to 15 mph. Chance of precipitation is 30%.
Thursday Night
Mostly clear, with a low around 54.
Friday
A 40 percent chance of showers after 1pm. Partly sunny, with a high near 80.
Friday Night
Showers and possibly a thunderstorm. Low around 51. Chance of precipitation is 80%.
Saturday
A 50 percent chance of showers and thunderstorms. Mostly cloudy, with a high near 62.
Saturday Night
A chance of rain and snow showers. Some thunder is also possible. Mostly cloudy, with a low around 35. Chance of precipitation is 40%.
Sunday
A 30 percent chance of snow showers. Mostly sunny, with a high near 54.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
5 Miles SSW Janesville WI
 42.63°N 89.04°W (Elev. 804 ft)
Last Update:
10:12 pm CDT Apr 12, 2026
Forecast Valid:
10pm CDT Apr 12, 2026-6pm CDT Apr 19, 2026
 
Forecast Discussion
 
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Additional Resources

Radar & Satellite Image

Link to Local Radar Data Link to Satellite Data

Hourly Weather Forecast

National Digital Forecast Database

National Digital Forecast Database Maximum Temperature Forecast

High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation