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 and Breezy

43°F

6°C

Humidity 71%
Wind Speed W 25 G 36 mph
Barometer 29.89 in
Dewpoint 34°F (1°C)
Visibility 10.00 mi
Wind Chill33°F (1°C)
Last update 4 Apr 5:45 pm CDT
Extended Forecast for

Janesville WI

  • Tonight

    Tonight: Scattered rain and snow showers before 11pm, then a slight chance of sprinkles and flurries between 11pm and midnight. Mostly cloudy, with a low around 33. Breezy, with a west wind 15 to 20 mph, with gusts as high as 30 mph. Chance of precipitation is 50%.

    Low: 33 °F

    Scattered
    Rain/Snow and
    Breezy then
    Mostly Cloudy

  • Sunday

    Sunday: Mostly cloudy, then gradually becoming sunny, with a high near 52. Northwest wind around 15 mph, with gusts as high as 25 mph.

    High: 52 °F

    Decreasing
    Clouds

  • Sunday Night

    Sunday Night: A 30 percent chance of showers before 1am. Mostly cloudy, with a low around 35. West wind 5 to 10 mph.

    Low: 35 °F

    Chance
    Showers

  • Monday

    Monday: Mostly sunny, with a high near 46. Northwest wind 10 to 15 mph, with gusts as high as 25 mph.

    High: 46 °F

    Mostly Sunny

  • Monday Night

    Monday Night: Mostly clear, with a low around 20. North wind 5 to 15 mph.

    Low: 20 °F

    Mostly Clear

  • Tuesday

    Tuesday: Sunny, with a high near 44. Calm wind becoming southeast around 5 mph in the afternoon.

    High: 44 °F

    Sunny

  • Tuesday Night

    Tuesday Night: A chance of snow showers after 1am, mixing with rain after 4am. Mostly cloudy, with a low around 31. Southeast wind 10 to 15 mph. Chance of precipitation is 30%.

    Low: 31 °F

    Mostly Cloudy
    then Chance
    Rain/Snow

  • Wednesday

    Wednesday: A 30 percent chance of showers, mainly before 7am. Mostly cloudy, with a high near 63. Windy, with a south wind 15 to 25 mph, with gusts as high as 35 mph.

    High: 63 °F

    Chance
    Showers and
    Windy

  • Wednesday Night

    Wednesday Night: Showers likely and possibly a thunderstorm before 1am, then a chance of showers. Mostly cloudy, with a low around 48. Chance of precipitation is 60%.

    Low: 48 °F

    Showers
    Likely

Detailed Forecast

Tonight
Scattered rain and snow showers before 11pm, then a slight chance of sprinkles and flurries between 11pm and midnight. Mostly cloudy, with a low around 33. Breezy, with a west wind 15 to 20 mph, with gusts as high as 30 mph. Chance of precipitation is 50%.
Sunday
Mostly cloudy, then gradually becoming sunny, with a high near 52. Northwest wind around 15 mph, with gusts as high as 25 mph.
Sunday Night
A 30 percent chance of showers before 1am. Mostly cloudy, with a low around 35. West wind 5 to 10 mph.
Monday
Mostly sunny, with a high near 46. Northwest wind 10 to 15 mph, with gusts as high as 25 mph.
Monday Night
Mostly clear, with a low around 20. North wind 5 to 15 mph.
Tuesday
Sunny, with a high near 44. Calm wind becoming southeast around 5 mph in the afternoon.
Tuesday Night
A chance of snow showers after 1am, mixing with rain after 4am. Mostly cloudy, with a low around 31. Southeast wind 10 to 15 mph. Chance of precipitation is 30%.
Wednesday
A 30 percent chance of showers, mainly before 7am. Mostly cloudy, with a high near 63. Windy, with a south wind 15 to 25 mph, with gusts as high as 35 mph.
Wednesday Night
Showers likely and possibly a thunderstorm before 1am, then a chance of showers. Mostly cloudy, with a low around 48. Chance of precipitation is 60%.
Thursday
A 40 percent chance of showers. Mostly cloudy, with a high near 60.
Thursday Night
A 50 percent chance of showers. Mostly cloudy, with a low around 40.
Friday
A 40 percent chance of showers. Partly sunny, with a high near 60.
Friday Night
A 50 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 44.
Saturday
A 50 percent chance of showers. Mostly cloudy, with a high near 63.
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:
6:01 pm CDT Apr 4, 2026
Forecast Valid:
6pm CDT Apr 4, 2026-6pm CDT Apr 11, 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