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.

Partly Cloudy

16°F

-9°C

Humidity 53%
Wind Speed W 20 G 31 mph
Barometer 30.15 in
Dewpoint 1°F (-17°C)
Visibility 10.00 mi
Wind Chill-1°F (-18°C)
Last update 22 Jan 3:45 pm CST
Extended Forecast for

2 Miles S Shirland IL

Cold Weather Advisory January 23, 12:00pm until January 24, 09:00am
Extreme Cold Warning January 23, 03:00am until January 23, 12:00pm
Click here for hazard details and duration
Cold Weather Advisory
Extreme Cold Warning

  • This Afternoon

    This Afternoon: A chance of flurries. Partly sunny, with a high near 20. Wind chill values as low as zero. Blustery, with a west northwest wind around 20 mph, with gusts as high as 30 mph.

    High: 20 °F

    Chance
    Flurries and
    Blustery

  • Tonight

    Tonight: Intermittent flurries. Partly cloudy, with a low around -14. Wind chill values as low as -35. Blustery, with a west northwest wind 15 to 20 mph, with gusts as high as 30 mph.

    Low: -14 °F

    Intermittent
    Flurries and
    Blustery

  • Friday

    Friday: Sunny and cold, with a high near -3. Wind chill values as low as -36. Northwest wind 10 to 15 mph, with gusts as high as 25 mph.

    High: -3 °F

    Cold

  • Friday Night

    Friday Night: Mostly cloudy, with a low around -9. Wind chill values as low as -18. North wind around 5 mph.

    Low: -9 °F

    Mostly Cloudy

  • Saturday

    Saturday: A 20 percent chance of snow. Mostly cloudy and cold, with a high near 4. North northeast wind around 5 mph.

    High: 4 °F

    Slight Chance
    Snow

  • Saturday Night

    Saturday Night: A 30 percent chance of snow. Mostly cloudy, with a low around -1.

    Low: -1 °F

    Chance Snow

  • Sunday

    Sunday: A 30 percent chance of snow. Mostly cloudy, with a high near 11.

    High: 11 °F

    Chance Snow

  • Sunday Night

    Sunday Night: Mostly cloudy, with a low around -6.

    Low: -6 °F

    Mostly Cloudy

  • Monday

    Monday: Sunny and cold, with a high near 10.

    High: 10 °F

    Cold

Detailed Forecast

This Afternoon
A chance of flurries. Partly sunny, with a high near 20. Wind chill values as low as zero. Blustery, with a west northwest wind around 20 mph, with gusts as high as 30 mph.
Tonight
Intermittent flurries. Partly cloudy, with a low around -14. Wind chill values as low as -35. Blustery, with a west northwest wind 15 to 20 mph, with gusts as high as 30 mph.
Friday
Sunny and cold, with a high near -3. Wind chill values as low as -36. Northwest wind 10 to 15 mph, with gusts as high as 25 mph.
Friday Night
Mostly cloudy, with a low around -9. Wind chill values as low as -18. North wind around 5 mph.
Saturday
A 20 percent chance of snow. Mostly cloudy and cold, with a high near 4. North northeast wind around 5 mph.
Saturday Night
A 30 percent chance of snow. Mostly cloudy, with a low around -1.
Sunday
A 30 percent chance of snow. Mostly cloudy, with a high near 11.
Sunday Night
Mostly cloudy, with a low around -6.
Monday
Sunny and cold, with a high near 10.
Monday Night
Mostly cloudy, with a low around 1.
Tuesday
Partly sunny, with a high near 17.
Tuesday Night
Mostly cloudy, with a low around 1.
Wednesday
Partly sunny, with a high near 12.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
2 Miles S Shirland IL
 42.44°N 89.2°W
Last Update:
3:11 pm CST Jan 22, 2026
Forecast Valid:
3pm CST Jan 22, 2026-6pm CST Jan 28, 2026
 
Forecast Discussion
 
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Additional Resources

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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