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.

Fog/Mist

39°F

4°C

Humidity 93%
Wind Speed E 6 mph
Barometer 29.93 in
Dewpoint 37°F (3°C)
Visibility 4.00 mi
Wind Chill35°F (2°C)
Last update 21 Mar 3:55 am CDT
Extended Forecast for

5 Miles SSW Janesville WI

  • Today

    Today: Mostly sunny, with a high near 72. Southeast wind 5 to 10 mph becoming southwest 10 to 15 mph in the afternoon. Winds could gust as high as 25 mph.

    High: 72 °F

    Mostly Sunny

  • Tonight

    Tonight: Partly cloudy, with a low around 45. Southwest wind 5 to 10 mph becoming northeast after midnight.

    Low: 45 °F

    Partly Cloudy

  • Sunday

    Sunday: A 30 percent chance of rain, mainly between 7am and 1pm. Mostly cloudy, with a high near 46. North wind 10 to 15 mph.

    High: 46 °F

    Chance Rain

  • Sunday Night

    Sunday Night: Partly cloudy, with a low around 25. North wind 5 to 15 mph.

    Low: 25 °F

    Partly Cloudy

  • Monday

    Monday: Sunny, with a high near 46. North wind around 5 mph.

    High: 46 °F

    Sunny

  • Monday Night

    Monday Night: Mostly cloudy, with a low around 31. East wind around 5 mph becoming south after midnight.

    Low: 31 °F

    Mostly Cloudy

  • Tuesday

    Tuesday: Mostly cloudy, with a high near 56. Southwest wind 10 to 15 mph.

    High: 56 °F

    Mostly Cloudy

  • Tuesday Night

    Tuesday Night: Mostly cloudy, with a low around 36. Southwest wind around 5 mph becoming east after midnight.

    Low: 36 °F

    Mostly Cloudy

  • Wednesday

    Wednesday: Mostly cloudy, with a high near 53.

    High: 53 °F

    Mostly Cloudy

Detailed Forecast

Today
Mostly sunny, with a high near 72. Southeast wind 5 to 10 mph becoming southwest 10 to 15 mph in the afternoon. Winds could gust as high as 25 mph.
Tonight
Partly cloudy, with a low around 45. Southwest wind 5 to 10 mph becoming northeast after midnight.
Sunday
A 30 percent chance of rain, mainly between 7am and 1pm. Mostly cloudy, with a high near 46. North wind 10 to 15 mph.
Sunday Night
Partly cloudy, with a low around 25. North wind 5 to 15 mph.
Monday
Sunny, with a high near 46. North wind around 5 mph.
Monday Night
Mostly cloudy, with a low around 31. East wind around 5 mph becoming south after midnight.
Tuesday
Mostly cloudy, with a high near 56. Southwest wind 10 to 15 mph.
Tuesday Night
Mostly cloudy, with a low around 36. Southwest wind around 5 mph becoming east after midnight.
Wednesday
Mostly cloudy, with a high near 53.
Wednesday Night
A 20 percent chance of rain after 1am. Mostly cloudy, with a low around 42.
Thursday
A 30 percent chance of rain. Partly sunny, with a high near 59.
Thursday Night
A 20 percent chance of rain. Mostly cloudy, with a low around 28.
Friday
Mostly sunny, with a high near 44.
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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:
3:52 am CDT Mar 21, 2026
Forecast Valid:
4am CDT Mar 21, 2026-6pm CDT Mar 27, 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