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 80%
Wind Speed W 8 mph
Barometer 29.96 in
Dewpoint 21°F (-6°C)
Visibility 10.00 mi
Wind Chill19°F (-7°C)
Last update 20 Feb 10:55 pm CST
Extended Forecast for

4 Miles WNW Beloit WI

  • Tonight

    Tonight: Mostly cloudy, with a low around 22. Northwest wind around 10 mph.

    Low: 22 °F

    Mostly Cloudy

  • Saturday

    Saturday: Partly sunny, with a high near 32. Northwest wind 10 to 15 mph.

    High: 32 °F

    Partly Sunny

  • Saturday Night

    Saturday Night: A chance of flurries before midnight, then a slight chance of snow after midnight. Mostly cloudy, with a low around 19. Northwest wind around 15 mph. Chance of precipitation is 20%.

    Low: 19 °F

    Mostly Cloudy
    then Slight
    Chance Snow

  • Sunday

    Sunday: A chance of flurries before noon. Mostly cloudy, with a high near 27. Blustery, with a northwest wind 15 to 20 mph, with gusts as high as 30 mph.

    High: 27 °F

    Chance
    Flurries and
    Blustery

  • Sunday Night

    Sunday Night: Mostly cloudy, with a low around 14. Blustery, with a north wind 15 to 20 mph, with gusts as high as 25 mph.

    Low: 14 °F

    Mostly Cloudy
    and Blustery
    then Partly
    Cloudy

  • Monday

    Monday: Sunny, with a high near 27. North wind 5 to 15 mph.

    High: 27 °F

    Sunny

  • Monday Night

    Monday Night: Mostly cloudy, with a low around 16. Calm wind becoming south around 5 mph after midnight.

    Low: 16 °F

    Mostly Cloudy

  • Tuesday

    Tuesday: Partly sunny, with a high near 38. South wind 10 to 15 mph.

    High: 38 °F

    Partly Sunny

  • Tuesday Night

    Tuesday Night: Mostly cloudy, with a low around 25.

    Low: 25 °F

    Mostly Cloudy

Detailed Forecast

Tonight
Mostly cloudy, with a low around 22. Northwest wind around 10 mph.
Saturday
Partly sunny, with a high near 32. Northwest wind 10 to 15 mph.
Saturday Night
A chance of flurries before midnight, then a slight chance of snow after midnight. Mostly cloudy, with a low around 19. Northwest wind around 15 mph. Chance of precipitation is 20%.
Sunday
A chance of flurries before noon. Mostly cloudy, with a high near 27. Blustery, with a northwest wind 15 to 20 mph, with gusts as high as 30 mph.
Sunday Night
Mostly cloudy, with a low around 14. Blustery, with a north wind 15 to 20 mph, with gusts as high as 25 mph.
Monday
Sunny, with a high near 27. North wind 5 to 15 mph.
Monday Night
Mostly cloudy, with a low around 16. Calm wind becoming south around 5 mph after midnight.
Tuesday
Partly sunny, with a high near 38. South wind 10 to 15 mph.
Tuesday Night
Mostly cloudy, with a low around 25.
Wednesday
A slight chance of snow before noon, then a slight chance of rain and snow. Partly sunny, with a high near 41. Chance of precipitation is 20%.
Wednesday Night
A slight chance of rain and snow. Partly cloudy, with a low around 21. Chance of precipitation is 20%.
Thursday
Mostly sunny, with a high near 40.
Thursday Night
Mostly clear, with a low around 24.
Friday
Sunny, with a high near 51.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
4 Miles WNW Beloit WI
 42.54°N 89.1°W (Elev. 889 ft)
Last Update:
10:42 pm CST Feb 20, 2026
Forecast Valid:
11pm CST Feb 20, 2026-6pm CST Feb 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