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.

Fair

3°F

-16°C

Humidity 66%
Wind Speed N 5 mph
Barometer 30.27 in
Dewpoint -6°F (-21°C)
Visibility 10.00 mi
Wind Chill-7°F (-22°C)
Last update 29 Jan 1:55 am CST
Extended Forecast for

4 Miles WNW Beloit WI

  • Overnight

    Overnight: Mostly clear, with a low around -4. Wind chill values between -5 and -10. Northwest wind around 5 mph.

    Low: -4 °F

    Mostly Clear

  • Thursday

    Thursday: Sunny, with a high near 14. Wind chill values between -10 and zero. Northwest wind around 5 mph.

    High: 14 °F

    Sunny

  • Thursday Night

    Thursday Night: Partly cloudy, with a low around -2. Wind chill values between -5 and -15. Calm wind becoming north around 5 mph after midnight.

    Low: -2 °F

    Partly Cloudy

  • Friday

    Friday: Mostly sunny, with a high near 15. Wind chill values between -5 and -15. North wind 5 to 15 mph.

    High: 15 °F

    Mostly Sunny

  • Friday Night

    Friday Night: Partly cloudy, with a low around 4. Northwest wind around 10 mph.

    Low: 4 °F

    Partly Cloudy

  • Saturday

    Saturday: Sunny, with a high near 20. North wind 5 to 10 mph.

    High: 20 °F

    Sunny

  • Saturday Night

    Saturday Night: Mostly clear, with a low around 4. Northwest wind around 5 mph becoming calm.

    Low: 4 °F

    Mostly Clear

  • Sunday

    Sunday: A 20 percent chance of snow after noon. Mostly sunny, with a high near 25. South wind 5 to 10 mph.

    High: 25 °F

    Mostly Sunny
    then Slight
    Chance Snow

  • Sunday Night

    Sunday Night: A 40 percent chance of snow. Mostly cloudy, with a low around 15.

    Low: 15 °F

    Chance Snow

Detailed Forecast

Overnight
Mostly clear, with a low around -4. Wind chill values between -5 and -10. Northwest wind around 5 mph.
Thursday
Sunny, with a high near 14. Wind chill values between -10 and zero. Northwest wind around 5 mph.
Thursday Night
Partly cloudy, with a low around -2. Wind chill values between -5 and -15. Calm wind becoming north around 5 mph after midnight.
Friday
Mostly sunny, with a high near 15. Wind chill values between -5 and -15. North wind 5 to 15 mph.
Friday Night
Partly cloudy, with a low around 4. Northwest wind around 10 mph.
Saturday
Sunny, with a high near 20. North wind 5 to 10 mph.
Saturday Night
Mostly clear, with a low around 4. Northwest wind around 5 mph becoming calm.
Sunday
A 20 percent chance of snow after noon. Mostly sunny, with a high near 25. South wind 5 to 10 mph.
Sunday Night
A 40 percent chance of snow. Mostly cloudy, with a low around 15.
Monday
Mostly cloudy, with a high near 28.
Monday Night
Mostly cloudy, with a low around 13.
Tuesday
A 20 percent chance of snow. Partly sunny, with a high near 26.
Tuesday Night
A 30 percent chance of snow. Mostly cloudy, with a low around 14.
Wednesday
A 40 percent chance of snow. Partly sunny, with a high near 25.
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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:
1:26 am CST Jan 29, 2026
Forecast Valid:
2am CST Jan 29, 2026-6pm CST Feb 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