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

46°F

8°C

Humidity 71%
Wind Speed E 14 mph
Barometer 29.81 in
Dewpoint 37°F (3°C)
Visibility 10.00 mi
Wind Chill40°F (4°C)
Last update 10 Mar 3:45 pm CDT
Extended Forecast for

Janesville WI

  • This Afternoon

    This Afternoon: A 40 percent chance of rain and thunderstorms. Mostly cloudy, with a high near 52. East wind around 15 mph.

    High: 52 °F

    Chance
    T-storms

  • Tonight

    Tonight: Rain and thunderstorms before 4am, then a chance of rain. Patchy fog after 9pm. Low around 34. Northeast wind 10 to 15 mph. Chance of precipitation is 80%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

    Low: 34 °F

    Rain and
    Patchy Fog
    then Chance
    T-storms and
    Patchy Fog

  • Wednesday

    Wednesday: Rain and snow likely before 1pm, then a chance of snow between 1pm and 3pm. Cloudy, with a high near 38. Breezy, with a northwest wind 10 to 20 mph, with gusts as high as 30 mph. Chance of precipitation is 70%. Little or no snow accumulation expected.

    High: 38 °F

    Rain/Snow
    Likely then
    Snow Likely
    and Breezy

  • Wednesday Night

    Wednesday Night: Mostly cloudy, then gradually becoming mostly clear, with a low around 25. Northwest wind 10 to 15 mph decreasing to 5 to 10 mph after midnight. Winds could gust as high as 25 mph.

    Low: 25 °F

    Decreasing
    Clouds

  • Thursday

    Thursday: Increasing clouds, with a high near 47. Southwest wind 5 to 10 mph increasing to 10 to 15 mph in the afternoon.

    High: 47 °F

    Increasing
    Clouds

  • Thursday Night

    Thursday Night: Rain before 4am, then rain and snow. Low around 35. Windy, with a south wind 15 to 25 mph, with gusts as high as 35 mph. Chance of precipitation is 80%. Little or no snow accumulation expected.

    Low: 35 °F

    Rain Likely
    and Breezy
    then
    Rain/Snow and
    Windy

  • Friday

    Friday: Snow before 7am. High near 43. Windy, with a northwest wind 20 to 30 mph, with gusts as high as 45 mph. Chance of precipitation is 80%.

    High: 43 °F

    Windy. Snow
    then Mostly
    Sunny

  • Friday Night

    Friday Night: Increasing clouds, with a low around 27. Northwest wind 5 to 10 mph becoming northeast after midnight.

    Low: 27 °F

    Increasing
    Clouds

  • Saturday

    Saturday: A 40 percent chance of snow. Cloudy, with a high near 42.

    High: 42 °F

    Chance Snow

Detailed Forecast

This Afternoon
A 40 percent chance of rain and thunderstorms. Mostly cloudy, with a high near 52. East wind around 15 mph.
Tonight
Rain and thunderstorms before 4am, then a chance of rain. Patchy fog after 9pm. Low around 34. Northeast wind 10 to 15 mph. Chance of precipitation is 80%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Wednesday
Rain and snow likely before 1pm, then a chance of snow between 1pm and 3pm. Cloudy, with a high near 38. Breezy, with a northwest wind 10 to 20 mph, with gusts as high as 30 mph. Chance of precipitation is 70%. Little or no snow accumulation expected.
Wednesday Night
Mostly cloudy, then gradually becoming mostly clear, with a low around 25. Northwest wind 10 to 15 mph decreasing to 5 to 10 mph after midnight. Winds could gust as high as 25 mph.
Thursday
Increasing clouds, with a high near 47. Southwest wind 5 to 10 mph increasing to 10 to 15 mph in the afternoon.
Thursday Night
Rain before 4am, then rain and snow. Low around 35. Windy, with a south wind 15 to 25 mph, with gusts as high as 35 mph. Chance of precipitation is 80%. Little or no snow accumulation expected.
Friday
Snow before 7am. High near 43. Windy, with a northwest wind 20 to 30 mph, with gusts as high as 45 mph. Chance of precipitation is 80%.
Friday Night
Increasing clouds, with a low around 27. Northwest wind 5 to 10 mph becoming northeast after midnight.
Saturday
A 40 percent chance of snow. Cloudy, with a high near 42.
Saturday Night
Rain and snow likely, mainly after 1am. Cloudy, with a low around 31. Chance of precipitation is 70%.
Sunday
Rain and snow likely. Cloudy, with a high near 39. Breezy. Chance of precipitation is 70%.
Sunday Night
Snow likely. Mostly cloudy, with a low around 11. Chance of precipitation is 60%.
Monday
Partly sunny, with a high near 25.
Monday Night
Mostly clear, with a low around 5.
Tuesday
Mostly sunny, with a high near 30.
Basemap Options
Click map to change the forecast location
Loading map...
Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Janesville WI
 42.67°N 89.04°W (Elev. 774 ft)
Last Update:
2:53 pm CDT Mar 10, 2026
Forecast Valid:
4pm CDT Mar 10, 2026-6pm CDT Mar 17, 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