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

64°F

18°C

Humidity 37%
Wind Speed SW 15 G 23 mph
Barometer 29.68 in
Dewpoint 37°F (3°C)
Visibility 10.00 mi
Last update 9 Mar 1:00 pm CDT
Extended Forecast for

5 Miles WSW Fort Atkinson WI

  • This Afternoon

    This Afternoon: Sunny, with a high near 67. Southwest wind 10 to 15 mph.

    High: 67 °F

    Sunny

  • Tonight

    Tonight: Mostly clear, with a low around 40. Calm wind becoming northeast around 5 mph after midnight.

    Low: 40 °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 showers and possibly a thunderstorm between 7pm and 1am, then showers after 1am. Patchy fog before 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 and
    Patchy Fog

  • Wednesday

    Wednesday: Rain showers likely before 10am, then rain and snow showers likely between 10am and 4pm, then a chance of snow showers after 4pm. Cloudy, with a high near 40. Breezy, with a north wind 15 to 20 mph, with gusts as high as 25 mph. Chance of precipitation is 60%. Little or no snow accumulation expected.

    High: 40 °F

    Rain/Snow
    Likely and
    Breezy

  • Wednesday Night

    Wednesday Night: Mostly cloudy, then gradually becoming mostly clear, with a low around 24. Northwest wind 5 to 10 mph.

    Low: 24 °F

    Decreasing
    Clouds

  • 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 and snow. Low around 33. Breezy, with a south wind 10 to 20 mph, with gusts as high as 30 mph. Chance of precipitation is 80%. New precipitation amounts of less than a tenth of an inch possible.

    Low: 33 °F

    Rain/Snow and
    Breezy

  • Friday

    Friday: A slight chance of rain and snow before 1pm. Mostly sunny, with a high near 44. Breezy. Chance of precipitation is 20%.

    High: 44 °F

    Slight Chance
    Rain/Snow and
    Breezy

Detailed Forecast

This Afternoon
Sunny, with a high near 67. Southwest wind 10 to 15 mph.
Tonight
Mostly clear, with a low around 40. 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 showers and possibly a thunderstorm between 7pm and 1am, then showers after 1am. Patchy fog before 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
Rain showers likely before 10am, then rain and snow showers likely between 10am and 4pm, then a chance of snow showers after 4pm. Cloudy, with a high near 40. Breezy, with a north wind 15 to 20 mph, with gusts as high as 25 mph. Chance of precipitation is 60%. Little or no snow accumulation expected.
Wednesday Night
Mostly cloudy, then gradually becoming mostly clear, with a low around 24. Northwest wind 5 to 10 mph.
Thursday
Increasing clouds, with a high near 45. Southwest wind 5 to 10 mph.
Thursday Night
Rain and snow. Low around 33. Breezy, with a south wind 10 to 20 mph, with gusts as high as 30 mph. Chance of precipitation is 80%. New precipitation amounts of less than a tenth of an inch possible.
Friday
A slight chance of rain and snow before 1pm. Mostly sunny, with a high near 44. Breezy. Chance of precipitation is 20%.
Friday Night
A 20 percent chance of snow after 1am. Mostly cloudy, with a low around 26.
Saturday
A chance of rain and snow. Mostly cloudy, with a high near 43. Chance of precipitation is 40%.
Saturday Night
Rain and snow likely. Cloudy, with a low around 31. Chance of precipitation is 60%.
Sunday
Rain and snow likely. Cloudy, with a high near 42. Chance of precipitation is 60%.
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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:
11:57 am CDT Mar 9, 2026
Forecast Valid:
12pm 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