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.

Fair

19°F

-7°C

Humidity 73%
Wind Speed Calm
Barometer 29.88 in
Dewpoint 12°F (-11°C)
Visibility 10.00 mi
Last update 26 Feb 12:55 am CST
Extended Forecast for

Beloit WI

  • Overnight

    Overnight: Partly cloudy, with a low around 17. Calm wind.

    Low: 17 °F

    Partly Cloudy

  • Thursday

    Thursday: Partly sunny, with a high near 42. Light and variable wind becoming southwest 5 to 10 mph in the morning.

    High: 42 °F

    Partly Sunny

  • Thursday Night

    Thursday Night: Partly cloudy, with a low around 28. Southwest wind around 5 mph.

    Low: 28 °F

    Partly Cloudy

  • Friday

    Friday: Mostly sunny, with a high near 59. Breezy, with a southwest wind 5 to 10 mph increasing to 15 to 20 mph in the afternoon. Winds could gust as high as 30 mph.

    High: 59 °F

    Mostly Sunny
    then Sunny
    and Breezy

  • Friday Night

    Friday Night: Mostly cloudy, with a low around 26. West wind 5 to 15 mph becoming north after midnight.

    Low: 26 °F

    Mostly Cloudy

  • Saturday

    Saturday: Snow likely, mainly after noon. Cloudy, with a high near 31. North wind 5 to 10 mph. Chance of precipitation is 60%. New snow accumulation of less than one inch possible.

    High: 31 °F

    Snow Likely

  • Saturday Night

    Saturday Night: Cloudy during the early evening, then gradual clearing, with a low around 13. North wind 5 to 10 mph.

    Low: 13 °F

    Gradual
    Clearing

  • Sunday

    Sunday: A 20 percent chance of snow after noon. Increasing clouds, with a high near 29. Northeast wind 5 to 10 mph.

    High: 29 °F

    Mostly Sunny
    then Slight
    Chance Snow

  • Sunday Night

    Sunday Night: A 20 percent chance of snow. Cloudy during the early evening, then gradual clearing, with a low around 16.

    Low: 16 °F

    Slight Chance
    Snow

Detailed Forecast

Overnight
Partly cloudy, with a low around 17. Calm wind.
Thursday
Partly sunny, with a high near 42. Light and variable wind becoming southwest 5 to 10 mph in the morning.
Thursday Night
Partly cloudy, with a low around 28. Southwest wind around 5 mph.
Friday
Mostly sunny, with a high near 59. Breezy, with a southwest wind 5 to 10 mph increasing to 15 to 20 mph in the afternoon. Winds could gust as high as 30 mph.
Friday Night
Mostly cloudy, with a low around 26. West wind 5 to 15 mph becoming north after midnight.
Saturday
Snow likely, mainly after noon. Cloudy, with a high near 31. North wind 5 to 10 mph. Chance of precipitation is 60%. New snow accumulation of less than one inch possible.
Saturday Night
Cloudy during the early evening, then gradual clearing, with a low around 13. North wind 5 to 10 mph.
Sunday
A 20 percent chance of snow after noon. Increasing clouds, with a high near 29. Northeast wind 5 to 10 mph.
Sunday Night
A 20 percent chance of snow. Cloudy during the early evening, then gradual clearing, with a low around 16.
Monday
Partly sunny, with a high near 36.
Monday Night
A 20 percent chance of snow. Mostly cloudy, with a low around 21.
Tuesday
A slight chance of rain and snow. Partly sunny, with a high near 42. Chance of precipitation is 20%.
Tuesday Night
Partly cloudy, with a low around 25.
Wednesday
A 20 percent chance of rain. Partly sunny, with a high near 46.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Beloit WI
 42.52°N 89.02°W (Elev. 745 ft)
Last Update:
12:22 am CST Feb 26, 2026
Forecast Valid:
1am CST Feb 26, 2026-6pm CST Mar 4, 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