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Hazardous Weather Conditions

Current conditions at

Janesville-Rock County (KJVL)

Lat: 42.62°NLon: 89.04°WElev: 801ft.

Fair

45°F

7°C

Humidity 93%
Wind Speed Calm
Barometer 29.73 in
Dewpoint 43°F (6°C)
Visibility 10.00 mi
Last update 10 Mar 12:15 am CDT
Extended Forecast for

Janesville WI

  • Overnight

    Overnight: Partly cloudy, with a low around 42. Calm wind becoming northeast around 5 mph.

    Low: 42 °F

    Partly Cloudy

  • Tuesday

    Tuesday: A 30 percent chance of showers and thunderstorms, mainly after 5pm. Partly sunny, with a high near 52. East wind 5 to 15 mph.

    High: 52 °F

    Mostly Sunny
    then Chance
    Showers

  • Tuesday Night

    Tuesday Night: Showers and thunderstorms, mainly before 3am, then a chance of rain after 4am. Low around 34. Northeast wind 10 to 15 mph. Chance of precipitation is 90%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

    Low: 34 °F

    Showers then
    Showers
    Likely

  • Wednesday

    Wednesday: Rain and snow before 1pm, then a chance of snow between 1pm and 4pm, then a chance of rain and snow after 4pm. High near 40. Northwest wind 10 to 15 mph, with gusts as high as 30 mph. Chance of precipitation is 80%. Little or no snow accumulation expected.

    High: 40 °F

    Rain/Snow

  • Wednesday Night

    Wednesday Night: A 30 percent chance of rain before 7pm. Mostly cloudy during the early evening, then gradual clearing, with a low around 24. Northwest wind 5 to 15 mph.

    Low: 24 °F

    Chance Rain
    then Mostly
    Clear

  • Thursday

    Thursday: Increasing clouds, with a high near 46. Southwest wind 5 to 10 mph increasing to 10 to 15 mph in the afternoon.

    High: 46 °F

    Increasing
    Clouds

  • Thursday Night

    Thursday Night: Rain likely. Cloudy, with a low around 35. Breezy, with a south wind 10 to 20 mph, with gusts as high as 30 mph. Chance of precipitation is 70%. New precipitation amounts of less than a tenth of an inch possible.

    Low: 35 °F

    Rain Likely
    and Breezy

  • Friday

    Friday: Partly sunny, with a high near 46. Breezy, with a west wind 15 to 20 mph, with gusts as high as 30 mph.

    High: 46 °F

    Partly Sunny
    and Breezy

  • Friday Night

    Friday Night: A 20 percent chance of snow after 1am. Mostly cloudy, with a low around 28.

    Low: 28 °F

    Mostly Cloudy
    then Slight
    Chance Snow

Detailed Forecast

Overnight
Partly cloudy, with a low around 42. Calm wind becoming northeast around 5 mph.
Tuesday
A 30 percent chance of showers and thunderstorms, mainly after 5pm. Partly sunny, with a high near 52. East wind 5 to 15 mph.
Tuesday Night
Showers and thunderstorms, mainly before 3am, then a chance of rain after 4am. Low around 34. Northeast wind 10 to 15 mph. Chance of precipitation is 90%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Wednesday
Rain and snow before 1pm, then a chance of snow between 1pm and 4pm, then a chance of rain and snow after 4pm. High near 40. Northwest wind 10 to 15 mph, with gusts as high as 30 mph. Chance of precipitation is 80%. Little or no snow accumulation expected.
Wednesday Night
A 30 percent chance of rain before 7pm. Mostly cloudy during the early evening, then gradual clearing, with a low around 24. Northwest wind 5 to 15 mph.
Thursday
Increasing clouds, with a high near 46. Southwest wind 5 to 10 mph increasing to 10 to 15 mph in the afternoon.
Thursday Night
Rain likely. Cloudy, with a low around 35. Breezy, with a south wind 10 to 20 mph, with gusts as high as 30 mph. Chance of precipitation is 70%. New precipitation amounts of less than a tenth of an inch possible.
Friday
Partly sunny, with a high near 46. Breezy, with a west wind 15 to 20 mph, with gusts as high as 30 mph.
Friday Night
A 20 percent chance of snow after 1am. Mostly cloudy, with a low around 28.
Saturday
A chance of snow before 1pm, then a slight chance of rain and snow. Cloudy, with a high near 42. Chance of precipitation is 30%.
Saturday Night
Rain and snow likely. Cloudy, with a low around 32. Chance of precipitation is 60%.
Sunday
Rain and snow likely. Cloudy, with a high near 40. Breezy. Chance of precipitation is 70%.
Sunday Night
A 30 percent chance of snow. Mostly cloudy, with a low around 16.
Monday
Mostly cloudy, with a high near 28.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Janesville WI
 42.67°N 89.04°W (Elev. 774 ft)
Last Update:
12:17 am CDT Mar 10, 2026
Forecast Valid:
12am CDT Mar 10, 2026-6pm CDT Mar 16, 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