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

50°F

10°C

Humidity 54%
Wind Speed SW 9 G 18 mph
Barometer 29.67 in
Dewpoint 34°F (1°C)
Visibility 10.00 mi
Wind Chill46°F (8°C)
Last update 9 Mar 3:55 am CDT
Extended Forecast for

5 Miles SW Fort Atkinson WI

  • Today

    Today: 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. East wind around 5 mph becoming calm.

    Low: 40 °F

    Mostly Clear

  • Tuesday

    Tuesday: A 30 percent chance of showers after 1pm. Partly sunny, with a high near 55. Northeast wind 5 to 10 mph.

    High: 55 °F

    Partly Sunny
    then Chance
    Showers

  • Tuesday Night

    Tuesday Night: Showers and possibly a thunderstorm. Patchy fog before 1am. Low around 33. Northeast wind around 10 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. North wind 10 to 15 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

  • 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. Light and variable wind becoming southwest 10 to 15 mph in the morning.

    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

Today
Sunny, with a high near 67. Southwest wind 10 to 15 mph.
Tonight
Mostly clear, with a low around 40. East wind around 5 mph becoming calm.
Tuesday
A 30 percent chance of showers after 1pm. Partly sunny, with a high near 55. Northeast wind 5 to 10 mph.
Tuesday Night
Showers and possibly a thunderstorm. Patchy fog before 1am. Low around 33. Northeast wind around 10 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. North wind 10 to 15 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. Light and variable wind becoming southwest 10 to 15 mph in the morning.
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 SW Fort Atkinson WI
 42.88°N 88.9°W (Elev. 814 ft)
Last Update:
3:33 am CDT Mar 9, 2026
Forecast Valid:
4am 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