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.

Overcast

32°F

0°C

Humidity 93%
Wind Speed W 12 G 18 mph
Barometer 29.94 in
Dewpoint 30°F (-1°C)
Visibility 10.00 mi
Wind Chill23°F (-5°C)
Last update 8 Mar 12:35 am CDT
Extended Forecast for

5 Miles SSW Janesville WI

  • Tonight

    Tonight: Mostly cloudy, with a low around 32. Southwest wind 10 to 15 mph.

    Low: 32 °F

    Mostly Cloudy

  • Sunday

    Sunday: Sunny, with a high near 60. Breezy, with a southwest wind 15 to 20 mph, with gusts as high as 30 mph.

    High: 60 °F

    Sunny then
    Sunny and
    Breezy

  • Sunday Night

    Sunday Night: Mostly clear, with a low around 43. Southwest wind around 15 mph, with gusts as high as 30 mph.

    Low: 43 °F

    Mostly Clear

  • Monday

    Monday: Sunny, with a high near 67. Southwest wind 10 to 15 mph.

    High: 67 °F

    Sunny

  • Monday Night

    Monday Night: Mostly clear, with a low around 44. South wind around 5 mph becoming east after midnight.

    Low: 44 °F

    Mostly Clear

  • Tuesday

    Tuesday: Rain likely and possibly a thunderstorm, mainly after 3pm. Increasing clouds, with a high near 66. East wind 5 to 15 mph. Chance of precipitation is 70%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

    High: 66 °F

    Sunny then
    Rain Likely

  • Tuesday Night

    Tuesday Night: Rain. Low around 33. North wind 10 to 15 mph. Chance of precipitation is 90%. New precipitation amounts between a quarter and half of an inch possible.

    Low: 33 °F

    Rain

  • Wednesday

    Wednesday: Rain and snow likely, mainly before noon. Cloudy, with a high near 42. Northwest wind around 15 mph, with gusts as high as 25 mph. Chance of precipitation is 70%. New precipitation amounts between a tenth and quarter of an inch possible.

    High: 42 °F

    Rain/Snow
    Likely then
    Chance
    Rain/Snow

  • Wednesday Night

    Wednesday Night: A 20 percent chance of snow before midnight. Mostly cloudy, then gradually becoming mostly clear, with a low around 24.

    Low: 24 °F

    Slight Chance
    Snow then
    Partly Cloudy

Detailed Forecast

Tonight
Mostly cloudy, with a low around 32. Southwest wind 10 to 15 mph.
Sunday
Sunny, with a high near 60. Breezy, with a southwest wind 15 to 20 mph, with gusts as high as 30 mph.
Sunday Night
Mostly clear, with a low around 43. Southwest wind around 15 mph, with gusts as high as 30 mph.
Monday
Sunny, with a high near 67. Southwest wind 10 to 15 mph.
Monday Night
Mostly clear, with a low around 44. South wind around 5 mph becoming east after midnight.
Tuesday
Rain likely and possibly a thunderstorm, mainly after 3pm. Increasing clouds, with a high near 66. East wind 5 to 15 mph. Chance of precipitation is 70%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Tuesday Night
Rain. Low around 33. North wind 10 to 15 mph. Chance of precipitation is 90%. New precipitation amounts between a quarter and half of an inch possible.
Wednesday
Rain and snow likely, mainly before noon. Cloudy, with a high near 42. Northwest wind around 15 mph, with gusts as high as 25 mph. Chance of precipitation is 70%. New precipitation amounts between a tenth and quarter of an inch possible.
Wednesday Night
A 20 percent chance of snow before midnight. Mostly cloudy, then gradually becoming mostly clear, with a low around 24.
Thursday
Partly sunny, with a high near 46.
Thursday Night
A chance of rain and snow. Mostly cloudy, with a low around 34. Chance of precipitation is 40%.
Friday
A 20 percent chance of rain. Partly sunny, with a high near 55. Breezy.
Friday Night
Mostly cloudy, with a low around 25.
Saturday
A 30 percent chance of snow. Mostly cloudy, with a high near 42.
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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:
11:31 pm CST Mar 7, 2026
Forecast Valid:
11pm CST Mar 7, 2026-6pm CDT Mar 14, 2026
 
Forecast Discussion
 
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Additional Resources

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Hourly Weather Forecast

National Digital Forecast Database

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High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation