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

12°F

-11°C

Humidity 57%
Wind Speed W 14 G 18 mph
Barometer 30.14 in
Dewpoint 0°F (-18°C)
Visibility 10.00 mi
Wind Chill-4°F (-20°C)
Last update 28 Jan 1:45 pm CST
Extended Forecast for

Darien WI

  • This Afternoon

    This Afternoon: Mostly sunny, with a high near 14. Wind chill values between -5 and zero. Northwest wind 10 to 15 mph.

    High: 14 °F

    Mostly Sunny

  • Tonight

    Tonight: Mostly clear, with a low around -6. Wind chill values between -10 and -15. Northwest wind 5 to 10 mph.

    Low: -6 °F

    Mostly Clear

  • Thursday

    Thursday: Sunny, with a high near 12. Wind chill values between -5 and -15. Northwest wind around 5 mph.

    High: 12 °F

    Sunny

  • Thursday Night

    Thursday Night: Mostly clear, with a low around -3. Wind chill values between -10 and -15. Calm wind becoming north around 5 mph after midnight.

    Low: -3 °F

    Mostly Clear

  • Friday

    Friday: A 30 percent chance of snow showers, mainly after noon. Partly sunny, with a high near 15. North wind 5 to 15 mph.

    High: 15 °F

    Chance Snow
    Showers

  • Friday Night

    Friday Night: Partly cloudy, with a low around 2. Northwest wind around 10 mph.

    Low: 2 °F

    Partly Cloudy

  • Saturday

    Saturday: Mostly sunny, with a high near 19. North wind 5 to 10 mph.

    High: 19 °F

    Mostly Sunny

  • Saturday Night

    Saturday Night: Mostly clear, with a low around 3. Northwest wind around 5 mph becoming calm in the evening.

    Low: 3 °F

    Mostly Clear

  • Sunday

    Sunday: A 30 percent chance of snow after noon. Mostly sunny, with a high near 23.

    High: 23 °F

    Mostly Sunny
    then Chance
    Snow

Detailed Forecast

This Afternoon
Mostly sunny, with a high near 14. Wind chill values between -5 and zero. Northwest wind 10 to 15 mph.
Tonight
Mostly clear, with a low around -6. Wind chill values between -10 and -15. Northwest wind 5 to 10 mph.
Thursday
Sunny, with a high near 12. Wind chill values between -5 and -15. Northwest wind around 5 mph.
Thursday Night
Mostly clear, with a low around -3. Wind chill values between -10 and -15. Calm wind becoming north around 5 mph after midnight.
Friday
A 30 percent chance of snow showers, mainly after noon. Partly sunny, with a high near 15. North wind 5 to 15 mph.
Friday Night
Partly cloudy, with a low around 2. Northwest wind around 10 mph.
Saturday
Mostly sunny, with a high near 19. North wind 5 to 10 mph.
Saturday Night
Mostly clear, with a low around 3. Northwest wind around 5 mph becoming calm in the evening.
Sunday
A 30 percent chance of snow after noon. Mostly sunny, with a high near 23.
Sunday Night
A 30 percent chance of snow, mainly before midnight. Mostly cloudy, with a low around 11.
Monday
Mostly cloudy, with a high near 26.
Monday Night
Mostly cloudy, with a low around 9.
Tuesday
A 20 percent chance of snow. Mostly cloudy, with a high near 26.
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:
1:47 pm CST Jan 28, 2026
Forecast Valid:
2pm CST Jan 28, 2026-6pm CST Feb 3, 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