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.

Fair

66°F

19°C

Humidity 37%
Wind Speed SW 14 mph
Barometer 29.68 in
Dewpoint 39°F (4°C)
Visibility 10.00 mi
Last update 9 Mar 12:45 pm CDT
Extended Forecast for

5 Miles WSW Fort Atkinson WI

  • This Afternoon

    This Afternoon: Sunny, with a high near 70. Southwest wind around 10 mph.

    High: 70 °F

    Sunny

  • Tonight

    Tonight: Mostly clear, with a low around 39. Calm wind becoming northeast around 5 mph after midnight.

    Low: 39 °F

    Mostly Clear

  • Tuesday

    Tuesday: A 30 percent chance of showers and thunderstorms, mainly after 5pm. Partly sunny, with a high near 51. Northeast wind 10 to 15 mph.

    High: 51 °F

    Mostly Sunny
    then Chance
    Showers

  • Tuesday Night

    Tuesday Night: A chance of showers and thunderstorms before 7pm, then rain and possibly a thunderstorm between 7pm and 1am, then rain likely after 1am. Low around 33. Northeast wind 10 to 15 mph. Chance of precipitation is 90%. New rainfall amounts between a quarter and half of an inch possible.

    Low: 33 °F

    Showers

  • Wednesday

    Wednesday: A chance of rain before 10am, then a chance of rain and snow between 10am and 1pm, then a chance of snow after 1pm. Cloudy, with a high near 39. Breezy, with a north wind 15 to 20 mph, with gusts as high as 25 mph. Chance of precipitation is 50%.

    High: 39 °F

    Chance
    Rain/Snow and
    Breezy

  • Wednesday Night

    Wednesday Night: Partly cloudy, with a low around 23. Northwest wind 5 to 10 mph.

    Low: 23 °F

    Partly Cloudy

  • Thursday

    Thursday: Increasing clouds, with a high near 45. Southwest wind 5 to 10 mph.

    High: 45 °F

    Increasing
    Clouds

  • Thursday Night

    Thursday Night: Rain. Low around 34. South wind 10 to 15 mph, with gusts as high as 30 mph. Chance of precipitation is 80%. New precipitation amounts between a tenth and quarter of an inch possible.

    Low: 34 °F

    Rain

  • Friday

    Friday: A slight chance of rain and snow before 1pm. Partly sunny, with a high near 45. Breezy. Chance of precipitation is 20%.

    High: 45 °F

    Slight Chance
    Rain/Snow and
    Breezy

Detailed Forecast

This Afternoon
Sunny, with a high near 70. Southwest wind around 10 mph.
Tonight
Mostly clear, with a low around 39. Calm wind becoming northeast around 5 mph after midnight.
Tuesday
A 30 percent chance of showers and thunderstorms, mainly after 5pm. Partly sunny, with a high near 51. Northeast wind 10 to 15 mph.
Tuesday Night
A chance of showers and thunderstorms before 7pm, then rain and possibly a thunderstorm between 7pm and 1am, then rain likely after 1am. Low around 33. Northeast wind 10 to 15 mph. Chance of precipitation is 90%. New rainfall amounts between a quarter and half of an inch possible.
Wednesday
A chance of rain before 10am, then a chance of rain and snow between 10am and 1pm, then a chance of snow after 1pm. Cloudy, with a high near 39. Breezy, with a north wind 15 to 20 mph, with gusts as high as 25 mph. Chance of precipitation is 50%.
Wednesday Night
Partly cloudy, with a low around 23. Northwest wind 5 to 10 mph.
Thursday
Increasing clouds, with a high near 45. Southwest wind 5 to 10 mph.
Thursday Night
Rain. Low around 34. South wind 10 to 15 mph, with gusts as high as 30 mph. Chance of precipitation is 80%. New precipitation amounts between a tenth and quarter of an inch possible.
Friday
A slight chance of rain and snow before 1pm. Partly sunny, with a high near 45. Breezy. Chance of precipitation is 20%.
Friday Night
A 20 percent chance of snow after 1am. Mostly cloudy, with a low around 27.
Saturday
A chance of rain and snow. Cloudy, with a high near 42. Chance of precipitation is 30%.
Saturday Night
Rain and snow likely. Cloudy, with a low around 30. Chance of precipitation is 70%.
Sunday
Rain and snow. High near 39. Chance of precipitation is 80%.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
5 Miles WSW Fort Atkinson WI
 42.88°N 88.93°W (Elev. 774 ft)
Last Update:
1:22 pm CDT Mar 9, 2026
Forecast Valid:
1pm CDT Mar 9, 2026-6pm CDT Mar 15, 2026
 
Forecast Discussion
 
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Additional Resources

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High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation