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

12°F

-11°C

Humidity 92%
Wind Speed Calm
Barometer 30.41 in
Dewpoint 10°F (-12°C)
Visibility 10.00 mi
Last update 1 Mar 4:35 am CST
Extended Forecast for

5 Miles SSW Janesville WI

  • Today

    Today: Mostly sunny, with a high near 33. Northeast wind 5 to 10 mph.

    High: 33 °F

    Mostly Sunny

  • Tonight

    Tonight: Partly cloudy, with a low around 20. Southeast wind around 5 mph.

    Low: 20 °F

    Partly Cloudy

  • Monday

    Monday: Mostly sunny, with a high near 42. Southeast wind 5 to 10 mph.

    High: 42 °F

    Mostly Sunny

  • Monday Night

    Monday Night: A chance of rain after midnight, mixing with snow after 2am. Mostly cloudy, with a low around 31. Southeast wind around 5 mph becoming calm after midnight. Chance of precipitation is 50%.

    Low: 31 °F

    Mostly Cloudy
    then Chance
    Rain/Snow

  • Tuesday

    Tuesday: Rain likely, mainly before noon. Mostly cloudy, with a high near 45. Calm wind becoming east around 5 mph in the morning. Chance of precipitation is 70%. New precipitation amounts of less than a tenth of an inch possible.

    High: 45 °F

    Rain Likely
    then Chance
    Rain

  • Tuesday Night

    Tuesday Night: A 20 percent chance of rain. Mostly cloudy, with a low around 33. East wind around 5 mph.

    Low: 33 °F

    Slight Chance
    Rain

  • Wednesday

    Wednesday: A chance of rain, with thunderstorms also possible after noon. Partly sunny, with a high near 48. East wind 5 to 10 mph. Chance of precipitation is 50%.

    High: 48 °F

    Chance Rain

  • Wednesday Night

    Wednesday Night: A chance of rain and thunderstorms. Mostly cloudy, with a low around 38. East wind around 5 mph. Chance of precipitation is 40%.

    Low: 38 °F

    Chance Rain

  • Thursday

    Thursday: A 40 percent chance of rain. Mostly cloudy, with a high near 52.

    High: 52 °F

    Chance Rain

Detailed Forecast

Today
Mostly sunny, with a high near 33. Northeast wind 5 to 10 mph.
Tonight
Partly cloudy, with a low around 20. Southeast wind around 5 mph.
Monday
Mostly sunny, with a high near 42. Southeast wind 5 to 10 mph.
Monday Night
A chance of rain after midnight, mixing with snow after 2am. Mostly cloudy, with a low around 31. Southeast wind around 5 mph becoming calm after midnight. Chance of precipitation is 50%.
Tuesday
Rain likely, mainly before noon. Mostly cloudy, with a high near 45. Calm wind becoming east around 5 mph in the morning. Chance of precipitation is 70%. New precipitation amounts of less than a tenth of an inch possible.
Tuesday Night
A 20 percent chance of rain. Mostly cloudy, with a low around 33. East wind around 5 mph.
Wednesday
A chance of rain, with thunderstorms also possible after noon. Partly sunny, with a high near 48. East wind 5 to 10 mph. Chance of precipitation is 50%.
Wednesday Night
A chance of rain and thunderstorms. Mostly cloudy, with a low around 38. East wind around 5 mph. Chance of precipitation is 40%.
Thursday
A 40 percent chance of rain. Mostly cloudy, with a high near 52.
Thursday Night
A 30 percent chance of rain. Mostly cloudy, with a low around 41.
Friday
Rain likely. Mostly cloudy, with a high near 62. Chance of precipitation is 70%.
Friday Night
Rain likely. Mostly cloudy, with a low around 40. Chance of precipitation is 60%.
Saturday
A 40 percent chance of rain. Mostly cloudy, with a high near 56.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
5 Miles SSW Janesville WI
 42.63°N 89.04°W (Elev. 804 ft)
Last Update:
3:34 am CST Mar 1, 2026
Forecast Valid:
4am CST Mar 1, 2026-6pm CST Mar 7, 2026
 
Forecast Discussion
 
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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