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.

Partly Cloudy

36°F

2°C

Humidity 65%
Wind Speed SW 6 mph
Barometer 29.84 in
Dewpoint 25°F (-4°C)
Visibility 10.00 mi
Wind Chill31°F (-1°C)
Last update 26 Feb 5:45 pm CST
Extended Forecast for

Beloit WI

  • Tonight

    Tonight: Mostly clear, with a low around 27. Southwest wind around 5 mph.

    Low: 27 °F

    Mostly Clear

  • Friday

    Friday: Sunny, with a high near 60. 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: 60 °F

    Sunny then
    Sunny and
    Breezy

  • Friday Night

    Friday Night: Partly cloudy, with a low around 25. West wind 5 to 10 mph becoming north after midnight.

    Low: 25 °F

    Partly Cloudy

  • Saturday

    Saturday: Snow likely. Mostly cloudy, with a high near 30. North wind 5 to 10 mph. Chance of precipitation is 60%. New snow accumulation of 1 to 2 inches possible.

    High: 30 °F

    Snow Likely

  • Saturday Night

    Saturday Night: A 20 percent chance of snow before midnight. Cloudy during the early evening, then gradual clearing, with a low around 13. North wind 5 to 10 mph.

    Low: 13 °F

    Slight Chance
    Snow then
    Mostly Clear

  • Sunday

    Sunday: Mostly sunny, with a high near 31. Northeast wind 5 to 10 mph.

    High: 31 °F

    Mostly Sunny

  • Sunday Night

    Sunday Night: A 30 percent chance of snow, mainly before midnight. Mostly cloudy, with a low around 16. East wind around 5 mph.

    Low: 16 °F

    Chance Snow

  • Monday

    Monday: Mostly sunny, with a high near 37. East wind 5 to 10 mph becoming southeast in the afternoon.

    High: 37 °F

    Mostly Sunny

  • Monday Night

    Monday Night: Mostly cloudy, with a low around 22.

    Low: 22 °F

    Mostly Cloudy

Detailed Forecast

Tonight
Mostly clear, with a low around 27. Southwest wind around 5 mph.
Friday
Sunny, with a high near 60. 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
Partly cloudy, with a low around 25. West wind 5 to 10 mph becoming north after midnight.
Saturday
Snow likely. Mostly cloudy, with a high near 30. North wind 5 to 10 mph. Chance of precipitation is 60%. New snow accumulation of 1 to 2 inches possible.
Saturday Night
A 20 percent chance of snow before midnight. Cloudy during the early evening, then gradual clearing, with a low around 13. North wind 5 to 10 mph.
Sunday
Mostly sunny, with a high near 31. Northeast wind 5 to 10 mph.
Sunday Night
A 30 percent chance of snow, mainly before midnight. Mostly cloudy, with a low around 16. East wind around 5 mph.
Monday
Mostly sunny, with a high near 37. East wind 5 to 10 mph becoming southeast in the afternoon.
Monday Night
Mostly cloudy, with a low around 22.
Tuesday
A chance of rain and snow, mainly after noon. Mostly cloudy, with a high near 41. Chance of precipitation is 30%.
Tuesday Night
A 20 percent chance of rain. Mostly cloudy, with a low around 25.
Wednesday
A 40 percent chance of rain. Mostly cloudy, with a high near 48.
Wednesday Night
Rain likely. Cloudy, with a low around 35. Chance of precipitation is 60%.
Thursday
A 50 percent chance of rain. Mostly cloudy, with a high near 52.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Beloit WI
 42.52°N 89.02°W (Elev. 745 ft)
Last Update:
5:03 pm CST Feb 26, 2026
Forecast Valid:
6pm CST Feb 26, 2026-6pm CST Mar 5, 2026
 
Forecast Discussion
 
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Additional Resources

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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