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

Janesville-Rock County (KJVL)

Lat: 42.62°NLon: 89.04°WElev: 801ft.

Overcast

61°F

16°C

Humidity 94%
Wind Speed SW 12 G 18 mph
Barometer 29.79 in
Dewpoint 59°F (15°C)
Visibility 10.00 mi
Last update 13 Apr 3:50 am CDT
Extended Forecast for

3 Miles SW Fort Atkinson WI

  • Today

    Today: A 30 percent chance of showers, mainly after 4pm. Mostly cloudy, with a high near 73. Southwest wind around 10 mph.

    High: 73 °F

    Mostly Cloudy
    then Chance
    Showers

  • Tonight

    Tonight: A 30 percent chance of showers and thunderstorms, mainly between midnight and 3am. Mostly cloudy, with a low around 63. Southwest wind around 10 mph.

    Low: 63 °F

    Chance
    T-storms

  • Tuesday

    Tuesday: A 50 percent chance of showers and thunderstorms, mainly after 4pm. Mostly sunny, with a high near 79. Southwest wind around 10 mph.

    High: 79 °F

    Partly Sunny
    then Chance
    T-storms

  • Tuesday Night

    Tuesday Night: A chance of showers and thunderstorms before 7pm, then showers and possibly a thunderstorm between 7pm and 1am, then a chance of showers and thunderstorms after 1am. Low around 57. Southwest wind 5 to 10 mph becoming west after midnight. Chance of precipitation is 80%. New rainfall amounts between a quarter and half of an inch possible.

    Low: 57 °F

    Showers

  • Wednesday

    Wednesday: A chance of showers and thunderstorms, then showers and possibly a thunderstorm after 1pm. High near 70. South wind 5 to 10 mph. Chance of precipitation is 80%. New rainfall amounts between a quarter and half of an inch possible.

    High: 70 °F

    Chance
    Showers then
    Showers

  • Wednesday Night

    Wednesday Night: Showers and possibly a thunderstorm before 1am, then a chance of showers and thunderstorms after 1am. Low around 56. South wind 5 to 10 mph. Chance of precipitation is 80%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

    Low: 56 °F

    Showers

  • Thursday

    Thursday: A 40 percent chance of showers and thunderstorms. Mostly cloudy, then gradually becoming sunny, with a high near 72. Southwest wind around 10 mph.

    High: 72 °F

    Chance
    Showers

  • Thursday Night

    Thursday Night: Mostly clear, with a low around 52. West wind around 5 mph becoming southeast after midnight.

    Low: 52 °F

    Mostly Clear

  • Friday

    Friday: A 40 percent chance of showers and thunderstorms after 1pm. Partly sunny, with a high near 79.

    High: 79 °F

    Partly Sunny
    then Chance
    Showers

Detailed Forecast

Today
A 30 percent chance of showers, mainly after 4pm. Mostly cloudy, with a high near 73. Southwest wind around 10 mph.
Tonight
A 30 percent chance of showers and thunderstorms, mainly between midnight and 3am. Mostly cloudy, with a low around 63. Southwest wind around 10 mph.
Tuesday
A 50 percent chance of showers and thunderstorms, mainly after 4pm. Mostly sunny, with a high near 79. Southwest wind around 10 mph.
Tuesday Night
A chance of showers and thunderstorms before 7pm, then showers and possibly a thunderstorm between 7pm and 1am, then a chance of showers and thunderstorms after 1am. Low around 57. Southwest wind 5 to 10 mph becoming west after midnight. Chance of precipitation is 80%. New rainfall amounts between a quarter and half of an inch possible.
Wednesday
A chance of showers and thunderstorms, then showers and possibly a thunderstorm after 1pm. High near 70. South wind 5 to 10 mph. Chance of precipitation is 80%. New rainfall amounts between a quarter and half of an inch possible.
Wednesday Night
Showers and possibly a thunderstorm before 1am, then a chance of showers and thunderstorms after 1am. Low around 56. South wind 5 to 10 mph. Chance of precipitation is 80%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Thursday
A 40 percent chance of showers and thunderstorms. Mostly cloudy, then gradually becoming sunny, with a high near 72. Southwest wind around 10 mph.
Thursday Night
Mostly clear, with a low around 52. West wind around 5 mph becoming southeast after midnight.
Friday
A 40 percent chance of showers and thunderstorms after 1pm. Partly sunny, with a high near 79.
Friday Night
Showers and possibly a thunderstorm. Low around 50. Chance of precipitation is 90%.
Saturday
A 40 percent chance of showers and thunderstorms. Partly sunny, with a high near 60.
Saturday Night
A slight chance of rain and snow showers. Mostly cloudy, with a low around 34. Chance of precipitation is 20%.
Sunday
Mostly sunny, with a high near 53.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
3 Miles SW Fort Atkinson WI
 42.9°N 88.9°W (Elev. 781 ft)
Last Update:
2:36 am CDT Apr 13, 2026
Forecast Valid:
4am CDT Apr 13, 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