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

5°F

-15°C

Humidity 85%
Wind Speed Calm
Barometer 30.39 in
Dewpoint 1°F (-17°C)
Visibility 10.00 mi
Last update 31 Jan 10:55 pm CST
Extended Forecast for

5 Miles SSW Janesville WI

  • Tonight

    Tonight: Mostly clear, with a low around 0. Calm wind.

    Low: 0 °F

    Mostly Clear

  • Sunday

    Sunday: A 50 percent chance of snow, mainly after noon. Partly sunny, with a high near 24. Wind chill values between -10 and zero. South wind 5 to 15 mph.

    High: 24 °F

    Slight Chance
    Snow then
    Chance Snow

  • Sunday Night

    Sunday Night: Snow likely, mainly before midnight. Mostly cloudy, with a low around 16. Southwest wind 5 to 10 mph. Chance of precipitation is 60%. New snow accumulation of less than a half inch possible.

    Low: 16 °F

    Snow Likely
    then Slight
    Chance Snow

  • Monday

    Monday: Partly sunny, with a high near 26. Northwest wind 5 to 10 mph.

    High: 26 °F

    Partly Sunny

  • Monday Night

    Monday Night: Mostly cloudy, with a low around 9. Northwest wind around 5 mph.

    Low: 9 °F

    Mostly Cloudy

  • Tuesday

    Tuesday: Mostly sunny, with a high near 21. North wind 5 to 10 mph.

    High: 21 °F

    Mostly Sunny

  • Tuesday Night

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

    Low: 3 °F

    Partly Cloudy

  • Wednesday

    Wednesday: Sunny, with a high near 22. Calm wind becoming northwest around 5 mph in the afternoon.

    High: 22 °F

    Sunny

  • Wednesday Night

    Wednesday Night: Partly cloudy, with a low around 9.

    Low: 9 °F

    Partly Cloudy

Detailed Forecast

Tonight
Mostly clear, with a low around 0. Calm wind.
Sunday
A 50 percent chance of snow, mainly after noon. Partly sunny, with a high near 24. Wind chill values between -10 and zero. South wind 5 to 15 mph.
Sunday Night
Snow likely, mainly before midnight. Mostly cloudy, with a low around 16. Southwest wind 5 to 10 mph. Chance of precipitation is 60%. New snow accumulation of less than a half inch possible.
Monday
Partly sunny, with a high near 26. Northwest wind 5 to 10 mph.
Monday Night
Mostly cloudy, with a low around 9. Northwest wind around 5 mph.
Tuesday
Mostly sunny, with a high near 21. North wind 5 to 10 mph.
Tuesday Night
Partly cloudy, with a low around 3. North wind around 5 mph becoming calm in the evening.
Wednesday
Sunny, with a high near 22. Calm wind becoming northwest around 5 mph in the afternoon.
Wednesday Night
Partly cloudy, with a low around 9.
Thursday
A 30 percent chance of snow, mainly after noon. Mostly cloudy, with a high near 32.
Thursday Night
A 40 percent chance of snow. Mostly cloudy, with a low around 25.
Friday
A 20 percent chance of snow. Mostly cloudy, with a high near 33.
Friday Night
Mostly cloudy, with a low around 7.
Saturday
Partly sunny, with a high near 21.
Basemap Options
Click map to change the forecast location
Loading map...
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:
10:42 pm CST Jan 31, 2026
Forecast Valid:
11pm CST Jan 31, 2026-6pm CST Feb 7, 2026
 
Forecast Discussion
 
Get as KML Get as XML

Additional Resources

Radar & Satellite Image

Link to Local Radar Data Link to Satellite Data

Hourly Weather Forecast

National Digital Forecast Database

National Digital Forecast Database Maximum Temperature Forecast

High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation