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

27°F

-3°C

Humidity 86%
Wind Speed Calm
Barometer 30.28 in
Dewpoint 23°F (-5°C)
Visibility 10.00 mi
Last update 12 Feb 1:35 am CST
Extended Forecast for

5 Miles SSW Janesville WI

  • Overnight

    Overnight: Mostly cloudy, with a low around 22. Calm wind.

    Low: 22 °F

    Mostly Cloudy

  • Thursday

    Thursday: Mostly cloudy, then gradually becoming sunny, with a high near 42. Calm wind becoming east around 5 mph in the afternoon.

    High: 42 °F

    Decreasing
    Clouds

  • Thursday Night

    Thursday Night: Mostly clear, with a low around 28. East wind around 5 mph becoming calm.

    Low: 28 °F

    Mostly Clear

  • Friday

    Friday: Sunny, with a high near 49. Southwest wind 5 to 10 mph.

    High: 49 °F

    Sunny

  • Friday Night

    Friday Night: Mostly clear, with a low around 28. Southwest wind around 5 mph becoming calm in the evening.

    Low: 28 °F

    Mostly Clear

  • Saturday

    Saturday: Partly sunny, with a high near 52. Calm wind becoming south around 5 mph in the afternoon.

    High: 52 °F

    Partly Sunny

  • Saturday Night

    Saturday Night: Partly cloudy, with a low around 31. South wind around 5 mph becoming calm in the evening.

    Low: 31 °F

    Partly Cloudy

  • Sunday

    Sunday: Sunny, with a high near 51. Light and variable wind becoming northwest 5 to 10 mph in the morning.

    High: 51 °F

    Sunny

  • Sunday Night

    Sunday Night: Increasing clouds, with a low around 31.

    Low: 31 °F

    Increasing
    Clouds

Detailed Forecast

Overnight
Mostly cloudy, with a low around 22. Calm wind.
Thursday
Mostly cloudy, then gradually becoming sunny, with a high near 42. Calm wind becoming east around 5 mph in the afternoon.
Thursday Night
Mostly clear, with a low around 28. East wind around 5 mph becoming calm.
Friday
Sunny, with a high near 49. Southwest wind 5 to 10 mph.
Friday Night
Mostly clear, with a low around 28. Southwest wind around 5 mph becoming calm in the evening.
Saturday
Partly sunny, with a high near 52. Calm wind becoming south around 5 mph in the afternoon.
Saturday Night
Partly cloudy, with a low around 31. South wind around 5 mph becoming calm in the evening.
Sunday
Sunny, with a high near 51. Light and variable wind becoming northwest 5 to 10 mph in the morning.
Sunday Night
Increasing clouds, with a low around 31.
Washington's Birthday
Partly sunny, with a high near 53.
Monday Night
Mostly cloudy, with a low around 37.
Tuesday
A 20 percent chance of rain. Mostly cloudy, with a high near 54.
Tuesday Night
A 50 percent chance of rain. Mostly cloudy, with a low around 42.
Wednesday
A 30 percent chance of rain. Mostly sunny, with a high near 54.
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Forecast Area
Tiles ©ESRI

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 Feb 12, 2026
Forecast Valid:
2am CST Feb 12, 2026-6pm CST Feb 18, 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