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

23°F

-5°C

Humidity 58%
Wind Speed Calm
Barometer 29.83 in
Dewpoint 10°F (-12°C)
Visibility 10.00 mi
Last update 25 Feb 9:10 pm CST
Extended Forecast for

5 Miles SSW Janesville WI

  • Tonight

    Tonight: Partly cloudy, with a low around 16. Calm wind.

    Low: 16 °F

    Partly Cloudy

  • Thursday

    Thursday: Partly sunny, with a high near 41. Light south wind becoming southwest 5 to 10 mph in the morning.

    High: 41 °F

    Partly Sunny

  • Thursday Night

    Thursday Night: Mostly clear, with a low around 27. Southwest wind 5 to 10 mph.

    Low: 27 °F

    Mostly Clear

  • Friday

    Friday: Sunny, with a high near 58. Breezy, with a southwest wind 10 to 20 mph, with gusts as high as 30 mph.

    High: 58 °F

    Mostly Sunny
    then Sunny
    and Breezy

  • Friday Night

    Friday Night: Increasing clouds, with a low around 26. West wind 5 to 15 mph becoming northwest after midnight.

    Low: 26 °F

    Increasing
    Clouds

  • Saturday

    Saturday: Snow likely, mainly after noon. Cloudy, with a high near 32. North wind 5 to 10 mph. Chance of precipitation is 60%. New snow accumulation of less than a half inch possible.

    High: 32 °F

    Chance Snow
    then Snow
    Likely

  • Saturday Night

    Saturday Night: Mostly cloudy, then gradually becoming mostly clear, with a low around 14. North wind around 10 mph.

    Low: 14 °F

    Decreasing
    Clouds

  • Sunday

    Sunday: A 20 percent chance of snow after noon. Sunny through mid morning, then becoming mostly cloudy, with a high near 28. East wind around 10 mph.

    High: 28 °F

    Partly Sunny
    then Slight
    Chance Snow

  • Sunday Night

    Sunday Night: A 30 percent chance of snow, mainly before midnight. Cloudy during the early evening, then gradual clearing, with a low around 16.

    Low: 16 °F

    Chance Snow

Detailed Forecast

Tonight
Partly cloudy, with a low around 16. Calm wind.
Thursday
Partly sunny, with a high near 41. Light south wind becoming southwest 5 to 10 mph in the morning.
Thursday Night
Mostly clear, with a low around 27. Southwest wind 5 to 10 mph.
Friday
Sunny, with a high near 58. Breezy, with a southwest wind 10 to 20 mph, with gusts as high as 30 mph.
Friday Night
Increasing clouds, with a low around 26. West wind 5 to 15 mph becoming northwest after midnight.
Saturday
Snow likely, mainly after noon. Cloudy, with a high near 32. North wind 5 to 10 mph. Chance of precipitation is 60%. New snow accumulation of less than a half inch possible.
Saturday Night
Mostly cloudy, then gradually becoming mostly clear, with a low around 14. North wind around 10 mph.
Sunday
A 20 percent chance of snow after noon. Sunny through mid morning, then becoming mostly cloudy, with a high near 28. East wind around 10 mph.
Sunday Night
A 30 percent chance of snow, mainly before midnight. Cloudy during the early evening, then gradual clearing, with a low around 16.
Monday
Mostly sunny, with a high near 35.
Monday Night
A 30 percent chance of snow. Mostly cloudy, with a low around 20.
Tuesday
A 30 percent chance of snow. Mostly sunny, with a high near 39.
Tuesday Night
Mostly clear, with a low around 24.
Wednesday
Sunny, with a high near 46.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
5 Miles SSW Janesville WI
 42.63°N 89.04°W (Elev. 804 ft)
Last Update:
8:33 pm CST Feb 25, 2026
Forecast Valid:
9pm CST Feb 25, 2026-6pm CST Mar 4, 2026
 
Forecast Discussion
 
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Additional Resources

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High Temperature

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Chance of Precipitation