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

9°F

-13°C

Humidity 72%
Wind Speed NW 3 mph
Barometer 30.39 in
Dewpoint 1°F (-17°C)
Visibility 10.00 mi
Last update 7 Feb 6:45 am CST
Extended Forecast for

Darien WI

  • Today

    Today: Increasing clouds, with a high near 22. Wind chill values between -5 and 5. North wind around 5 mph becoming calm in the morning.

    High: 22 °F

    Increasing
    Clouds

  • Tonight

    Tonight: A chance of snow or flurries before 10pm, then a chance of snow between 10pm and 3am. Cloudy, with a low around 16. Calm wind becoming southeast around 5 mph after midnight. Chance of precipitation is 40%.

    Low: 16 °F

    Chance Snow

  • Sunday

    Sunday: Mostly cloudy, with a high near 29. Southeast wind 5 to 10 mph.

    High: 29 °F

    Mostly Cloudy

  • Sunday Night

    Sunday Night: Mostly cloudy, with a low around 19. South wind around 5 mph.

    Low: 19 °F

    Mostly Cloudy

  • Monday

    Monday: Partly sunny, with a high near 39. Southwest wind 5 to 10 mph.

    High: 39 °F

    Partly Sunny

  • Monday Night

    Monday Night: Partly cloudy, with a low around 32. West wind around 5 mph becoming south after midnight.

    Low: 32 °F

    Partly Cloudy

  • Tuesday

    Tuesday: Partly sunny, with a high near 46. Northwest wind 5 to 10 mph.

    High: 46 °F

    Partly Sunny

  • Tuesday Night

    Tuesday Night: A 20 percent chance of snow. Mostly cloudy, with a low around 27. Northwest wind around 5 mph.

    Low: 27 °F

    Slight Chance
    Snow

  • Wednesday

    Wednesday: Mostly cloudy, with a high near 36.

    High: 36 °F

    Mostly Cloudy

Detailed Forecast

Today
Increasing clouds, with a high near 22. Wind chill values between -5 and 5. North wind around 5 mph becoming calm in the morning.
Tonight
A chance of snow or flurries before 10pm, then a chance of snow between 10pm and 3am. Cloudy, with a low around 16. Calm wind becoming southeast around 5 mph after midnight. Chance of precipitation is 40%.
Sunday
Mostly cloudy, with a high near 29. Southeast wind 5 to 10 mph.
Sunday Night
Mostly cloudy, with a low around 19. South wind around 5 mph.
Monday
Partly sunny, with a high near 39. Southwest wind 5 to 10 mph.
Monday Night
Partly cloudy, with a low around 32. West wind around 5 mph becoming south after midnight.
Tuesday
Partly sunny, with a high near 46. Northwest wind 5 to 10 mph.
Tuesday Night
A 20 percent chance of snow. Mostly cloudy, with a low around 27. Northwest wind around 5 mph.
Wednesday
Mostly cloudy, with a high near 36.
Wednesday Night
A 20 percent chance of snow after midnight. Mostly cloudy, with a low around 22.
Thursday
A 30 percent chance of snow. Mostly cloudy, with a high near 38.
Thursday Night
A 30 percent chance of snow. Mostly cloudy, with a low around 24.
Friday
A 20 percent chance of snow. Partly sunny, with a high near 38.
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:
5:32 am CST Feb 7, 2026
Forecast Valid:
6am CST Feb 7, 2026-6pm CST Feb 13, 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