Current conditions at

Janesville-Rock County (KJVL)

Lat: 42.62°NLon: 89.04°WElev: 801ft.

Overcast

21°F

-6°C

Humidity 93%
Wind Speed SW 9 mph
Barometer 30.04 in
Dewpoint 19°F (-7°C)
Visibility 10.00 mi
Wind Chill11°F (-12°C)
Last update 2 Feb 12:35 am CST
Extended Forecast for

Janesville WI

  • Overnight

    Overnight: Snow and freezing rain likely before 4am, then a slight chance of snow between 4am and 5am, then a slight chance of freezing rain after 5am.  Mostly cloudy, with a low around 17. Southwest wind around 5 mph becoming west.  Chance of precipitation is 70%. Little or no ice accumulation expected.  Total nighttime snow accumulation of less than a half inch possible.

    Low: 17 °F

    Wintry Mix
    Likely

  • Monday

    Monday: Partly sunny, with a high near 25. Northwest wind 5 to 10 mph.

    High: 25 °F

    Partly Sunny

  • Monday Night

    Monday Night: A 20 percent chance of snow after 3am.  Mostly cloudy, with a low around 10. Northwest wind around 5 mph becoming calm.

    Low: 10 °F

    Mostly Cloudy
    then Slight
    Chance Snow

  • Tuesday

    Tuesday: Sunny, with a high near 21. North wind around 5 mph.

    High: 21 °F

    Sunny

  • Tuesday Night

    Tuesday Night: Partly cloudy, with a low around 3. North wind around 5 mph becoming calm.

    Low: 3 °F

    Partly Cloudy

  • Wednesday

    Wednesday: Sunny, with a high near 23. Calm wind becoming west around 5 mph.

    High: 23 °F

    Sunny

  • Wednesday Night

    Wednesday Night: Increasing clouds, with a low around 10. West wind around 5 mph becoming calm.

    Low: 10 °F

    Increasing
    Clouds

  • Thursday

    Thursday: A 20 percent chance of snow after noon.  Partly sunny, with a high near 32. Southwest wind 5 to 10 mph.

    High: 32 °F

    Partly Sunny
    then Slight
    Chance Snow

  • Thursday Night

    Thursday Night: A chance of rain and snow, mainly before midnight.  Mostly cloudy, with a steady temperature around 31. Chance of precipitation is 30%.

    Low: 31 °F

    Chance
    Rain/Snow

Detailed Forecast

Overnight
Snow and freezing rain likely before 4am, then a slight chance of snow between 4am and 5am, then a slight chance of freezing rain after 5am. Mostly cloudy, with a low around 17. Southwest wind around 5 mph becoming west. Chance of precipitation is 70%. Little or no ice accumulation expected. Total nighttime snow accumulation of less than a half inch possible.
Monday
Partly sunny, with a high near 25. Northwest wind 5 to 10 mph.
Monday Night
A 20 percent chance of snow after 3am. Mostly cloudy, with a low around 10. Northwest wind around 5 mph becoming calm.
Tuesday
Sunny, with a high near 21. North wind around 5 mph.
Tuesday Night
Partly cloudy, with a low around 3. North wind around 5 mph becoming calm.
Wednesday
Sunny, with a high near 23. Calm wind becoming west around 5 mph.
Wednesday Night
Increasing clouds, with a low around 10. West wind around 5 mph becoming calm.
Thursday
A 20 percent chance of snow after noon. Partly sunny, with a high near 32. Southwest wind 5 to 10 mph.
Thursday Night
A chance of rain and snow, mainly before midnight. Mostly cloudy, with a steady temperature around 31. Chance of precipitation is 30%.
Friday
A 20 percent chance of snow. Partly sunny, with a temperature falling to around 24 by 5pm.
Friday Night
Partly cloudy, with a low around 8.
Saturday
Mostly sunny, with a high near 22.
Saturday Night
Mostly cloudy, with a low around 14.
Sunday
Mostly sunny, with a high near 28.
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ABOUT THIS FORECAST

 
Point Forecast:
Janesville WI
 42.67°N 89.04°W (Elev. 774 ft)
12:02 am CST Feb 2, 2026
12am CST Feb 2, 2026-6pm CST Feb 8, 2026
 
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Additional Resources

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Hourly Weather Forecast

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