National Oceanic and Atmospheric Administration National Weather Service United States Department of Commerce

Hazardous Weather Conditions

Current conditions at

Janesville-Rock County (KJVL)

Lat: 42.62°NLon: 89.04°WElev: 801ft.

Overcast

32°F

0°C

Humidity 75%
Wind Speed NE 3 mph
Barometer 30.18 in
Dewpoint 25°F (-4°C)
Visibility 10.00 mi
Last update 3 Mar 2:15 am CST
Extended Forecast for

5 Miles SSW Janesville WI

  • Overnight

    Overnight: A 20 percent chance of rain after 4am. Cloudy, with a low around 32. Southeast wind around 5 mph becoming calm.

    Low: 32 °F

    Slight Chance
    Rain

  • Tuesday

    Tuesday: A 30 percent chance of rain, mainly before 8am. Partly sunny, with a high near 46. Calm wind becoming northeast around 5 mph.

    High: 46 °F

    Chance Rain
    then Partly
    Sunny

  • Tuesday Night

    Tuesday Night: Patchy fog between 2am and 3am. Otherwise, partly cloudy, with a low around 28. Northeast wind around 5 mph becoming calm.

    Low: 28 °F

    Mostly Clear
    then Patchy
    Fog

  • Wednesday

    Wednesday: A 20 percent chance of rain after noon. Mostly sunny, with a high near 52. East wind 5 to 10 mph.

    High: 52 °F

    Mostly Sunny
    then Slight
    Chance Rain

  • Wednesday Night

    Wednesday Night: A 50 percent chance of rain, mainly after midnight. Increasing clouds, with a low around 38. East wind around 5 mph.

    Low: 38 °F

    Slight Chance
    Rain then
    Chance Rain

  • Thursday

    Thursday: Rain likely, mainly before noon. Cloudy, with a high near 52. East wind 5 to 10 mph. Chance of precipitation is 60%. New precipitation amounts between a tenth and quarter of an inch possible.

    High: 52 °F

    Rain Likely

  • Thursday Night

    Thursday Night: A 20 percent chance of rain. Mostly cloudy, with a low around 40. East wind around 5 mph becoming calm.

    Low: 40 °F

    Slight Chance
    Rain

  • Friday

    Friday: Rain, with thunderstorms also possible after noon. High near 64. Southeast wind 5 to 15 mph becoming south in the afternoon. Chance of precipitation is 100%. New rainfall amounts between a quarter and half of an inch possible.

    High: 64 °F

    Rain

  • Friday Night

    Friday Night: Rain and possibly a thunderstorm. Low around 48. Chance of precipitation is 80%.

    Low: 48 °F

    Rain

Detailed Forecast

Overnight
A 20 percent chance of rain after 4am. Cloudy, with a low around 32. Southeast wind around 5 mph becoming calm.
Tuesday
A 30 percent chance of rain, mainly before 8am. Partly sunny, with a high near 46. Calm wind becoming northeast around 5 mph.
Tuesday Night
Patchy fog between 2am and 3am. Otherwise, partly cloudy, with a low around 28. Northeast wind around 5 mph becoming calm.
Wednesday
A 20 percent chance of rain after noon. Mostly sunny, with a high near 52. East wind 5 to 10 mph.
Wednesday Night
A 50 percent chance of rain, mainly after midnight. Increasing clouds, with a low around 38. East wind around 5 mph.
Thursday
Rain likely, mainly before noon. Cloudy, with a high near 52. East wind 5 to 10 mph. Chance of precipitation is 60%. New precipitation amounts between a tenth and quarter of an inch possible.
Thursday Night
A 20 percent chance of rain. Mostly cloudy, with a low around 40. East wind around 5 mph becoming calm.
Friday
Rain, with thunderstorms also possible after noon. High near 64. Southeast wind 5 to 15 mph becoming south in the afternoon. Chance of precipitation is 100%. New rainfall amounts between a quarter and half of an inch possible.
Friday Night
Rain and possibly a thunderstorm. Low around 48. Chance of precipitation is 80%.
Saturday
A 20 percent chance of rain before noon. Partly sunny, with a high near 60.
Saturday Night
Mostly clear, with a low around 35.
Sunday
Sunny, with a high near 59.
Sunday Night
Partly cloudy, with a low around 39.
Monday
Sunny, with a high near 61.
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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:
1:31 am CST Mar 3, 2026
Forecast Valid:
2am CST Mar 3, 2026-6pm CDT Mar 9, 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