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 16 mph
Barometer 29.88 in
Dewpoint 21°F (-6°C)
Visibility 10.00 mi
Wind Chill15°F (-9°C)
Last update 20 Feb 7:45 pm CST
Extended Forecast for

Beloit WI

  • Tonight

    Tonight: Mostly cloudy, with a low around 25. Northwest wind 10 to 15 mph.

    Low: 25 °F

    Mostly Cloudy

  • Saturday

    Saturday: Partly sunny, with a high near 33. Northwest wind around 10 mph.

    High: 33 °F

    Partly Sunny

  • Saturday Night

    Saturday Night: A chance of snow between 9pm and 1am, then a chance of snow showers after 1am. Mostly cloudy, with a low around 21. Northwest wind 10 to 15 mph. Chance of precipitation is 30%.

    Low: 21 °F

    Chance Snow

  • Sunday

    Sunday: Mostly cloudy, with a high near 28. Blustery, with a northwest wind 15 to 20 mph, with gusts as high as 30 mph.

    High: 28 °F

    Mostly Cloudy
    then Mostly
    Cloudy and
    Blustery

  • Sunday Night

    Sunday Night: Mostly cloudy, with a low around 16. North wind around 15 mph.

    Low: 16 °F

    Mostly Cloudy

  • Monday

    Monday: Mostly sunny, with a high near 28. North wind 5 to 15 mph.

    High: 28 °F

    Mostly Sunny

  • Monday Night

    Monday Night: Mostly cloudy, with a low around 17. Calm wind becoming south around 5 mph after midnight.

    Low: 17 °F

    Mostly Cloudy

  • Tuesday

    Tuesday: Partly sunny, with a high near 38. South wind 5 to 15 mph.

    High: 38 °F

    Partly Sunny

  • Tuesday Night

    Tuesday Night: Mostly cloudy, with a low around 26.

    Low: 26 °F

    Mostly Cloudy

Detailed Forecast

Tonight
Mostly cloudy, with a low around 25. Northwest wind 10 to 15 mph.
Saturday
Partly sunny, with a high near 33. Northwest wind around 10 mph.
Saturday Night
A chance of snow between 9pm and 1am, then a chance of snow showers after 1am. Mostly cloudy, with a low around 21. Northwest wind 10 to 15 mph. Chance of precipitation is 30%.
Sunday
Mostly cloudy, with a high near 28. Blustery, with a northwest wind 15 to 20 mph, with gusts as high as 30 mph.
Sunday Night
Mostly cloudy, with a low around 16. North wind around 15 mph.
Monday
Mostly sunny, with a high near 28. North wind 5 to 15 mph.
Monday Night
Mostly cloudy, with a low around 17. Calm wind becoming south around 5 mph after midnight.
Tuesday
Partly sunny, with a high near 38. South wind 5 to 15 mph.
Tuesday Night
Mostly cloudy, with a low around 26.
Wednesday
A slight chance of snow before noon, then a slight chance of rain and snow. Partly sunny, with a high near 42. Chance of precipitation is 20%.
Wednesday Night
A slight chance of rain and snow. Partly cloudy, with a low around 22. Chance of precipitation is 20%.
Thursday
Mostly sunny, with a high near 40.
Thursday Night
Mostly clear, with a low around 24.
Friday
Mostly sunny, with a high near 51.
Basemap Options
Click map to change the forecast location
Loading map...
Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Beloit WI
 42.52°N 89.02°W (Elev. 745 ft)
Last Update:
7:34 pm CST Feb 20, 2026
Forecast Valid:
8pm CST Feb 20, 2026-6pm CST Feb 27, 2026
 
Forecast Discussion
 
Get as KML Get as XML

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