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.

Light Snow and Breezy

34°F

1°C

Humidity 93%
Wind Speed W 21 G 28 mph
Barometer 29.34 in
Dewpoint 32°F (0°C)
Visibility 2.00 mi
Wind Chill22°F (-6°C)
Last update 20 Feb 7:45 am CST
Extended Forecast for

Darien WI

Wind Advisory until February 20, 03:00pm
Click here for hazard details and duration
Wind Advisory
  •  
    Wind Advisory until February 20, 03:00pm

    NOW until 3:00pm Fri

    Wind Advisory

  • Today

    High: 36 °F

    Snow Likely
    and Windy

  • Tonight

    Tonight: Mostly cloudy, with a low around 23. Breezy, with a west wind 10 to 20 mph, with gusts as high as 30 mph.

    Low: 23 °F

    Mostly Cloudy
    and Breezy
    then Mostly
    Cloudy

  • Saturday

    Saturday: Partly sunny, with a high near 34. Northwest wind 10 to 15 mph.

    High: 34 °F

    Partly Sunny

  • Saturday Night

    Saturday Night: A 20 percent chance of snow after midnight. Mostly cloudy, with a low around 21. Northwest wind 10 to 15 mph.

    Low: 21 °F

    Cloudy then
    Slight Chance
    Snow

  • Sunday

    Sunday: A 20 percent chance of snow before noon. 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

    Blustery.
    Slight Chance
    Snow then
    Mostly Cloudy

  • Sunday Night

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

    Low: 16 °F

    Mostly Cloudy

  • Monday

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

    High: 28 °F

    Partly Sunny

  • Monday Night

    Monday Night: Mostly cloudy, with a low around 15. Calm wind becoming south around 5 mph after midnight.

    Low: 15 °F

    Mostly Cloudy

Detailed Forecast

Today
Snow likely, mainly before 11am. Cloudy, with a high near 36. Windy, with a west wind 15 to 25 mph, with gusts as high as 45 mph. Chance of precipitation is 70%. Total daytime snow accumulation of less than a half inch possible.
Tonight
Mostly cloudy, with a low around 23. Breezy, with a west wind 10 to 20 mph, with gusts as high as 30 mph.
Saturday
Partly sunny, with a high near 34. Northwest wind 10 to 15 mph.
Saturday Night
A 20 percent chance of snow after midnight. Mostly cloudy, with a low around 21. Northwest wind 10 to 15 mph.
Sunday
A 20 percent chance of snow before noon. 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
Partly sunny, with a high near 28. North wind 5 to 15 mph.
Monday Night
Mostly cloudy, with a low around 15. Calm wind becoming south around 5 mph after midnight.
Tuesday
Partly sunny, with a high near 38.
Tuesday Night
A slight chance of rain and snow after midnight. Mostly cloudy, with a low around 28. Chance of precipitation is 20%.
Wednesday
A chance of rain and snow. Partly sunny, with a high near 42. Chance of precipitation is 30%.
Wednesday Night
A 20 percent chance of snow. Partly cloudy, with a low around 20.
Thursday
A 20 percent chance of snow. Sunny, with a high near 39.
Basemap Options
Click map to change the forecast location
Loading map...
Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Darien WI
 42.59°N 88.72°W (Elev. 945 ft)
Last Update:
8:28 am CST Feb 20, 2026
Forecast Valid:
8am CST Feb 20, 2026-6pm CST Feb 26, 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