Current conditions at

Janesville-Rock County (KJVL)

Lat: 42.62°NLon: 89.04°WElev: 801ft.

Fair

46°F

8°C

Humidity 87%
Wind Speed Calm
Barometer 29.77 in
Dewpoint 43°F (6°C)
Visibility 10.00 mi
Last update 26 Mar 2:10 am CDT
Extended Forecast for

Darien WI

  • Overnight

    Overnight: Partly cloudy, with a low around 48. Calm wind.

    Low: 48 °F

    Partly Cloudy

  • Thursday

    Thursday: Showers and thunderstorms likely, then showers and possibly a thunderstorm after 4pm.  High near 63. Southeast wind 5 to 10 mph becoming northeast 10 to 15 mph in the morning.  Chance of precipitation is 80%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

    High: 63 °F

    Mostly Sunny
    then Showers

  • Thursday Night

    Thursday Night: A 30 percent chance of showers, mainly before 8pm.  Mostly cloudy, with a low around 25. Northeast wind 10 to 15 mph, with gusts as high as 30 mph.

    Low: 25 °F

    Chance
    Showers then
    Mostly Cloudy

  • Friday

    Friday: Mostly sunny, with a high near 43. Northwest wind 10 to 15 mph.

    High: 43 °F

    Mostly Sunny

  • Friday Night

    Friday Night: Mostly clear, with a low around 21. Northwest wind 5 to 10 mph.

    Low: 21 °F

    Mostly Clear

  • Saturday

    Saturday: Sunny, with a high near 48. Light west wind becoming southwest 10 to 15 mph in the morning.

    High: 48 °F

    Sunny

  • Saturday Night

    Saturday Night: Partly cloudy, with a low around 34. South wind around 10 mph.

    Low: 34 °F

    Partly Cloudy

  • Sunday

    Sunday: Mostly sunny, with a high near 61. South wind 10 to 15 mph.

    High: 61 °F

    Mostly Sunny

  • Sunday Night

    Sunday Night: Partly cloudy, with a low around 45.

    Low: 45 °F

    Partly Cloudy

Detailed Forecast

Overnight
Partly cloudy, with a low around 48. Calm wind.
Thursday
Showers and thunderstorms likely, then showers and possibly a thunderstorm after 4pm. High near 63. Southeast wind 5 to 10 mph becoming northeast 10 to 15 mph in the morning. Chance of precipitation is 80%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Thursday Night
A 30 percent chance of showers, mainly before 8pm. Mostly cloudy, with a low around 25. Northeast wind 10 to 15 mph, with gusts as high as 30 mph.
Friday
Mostly sunny, with a high near 43. Northwest wind 10 to 15 mph.
Friday Night
Mostly clear, with a low around 21. Northwest wind 5 to 10 mph.
Saturday
Sunny, with a high near 48. Light west wind becoming southwest 10 to 15 mph in the morning.
Saturday Night
Partly cloudy, with a low around 34. South wind around 10 mph.
Sunday
Mostly sunny, with a high near 61. South wind 10 to 15 mph.
Sunday Night
Partly cloudy, with a low around 45.
Monday
A 20 percent chance of rain and thunderstorms after 1pm. Mostly sunny, with a high near 69.
Monday Night
A 50 percent chance of rain. Mostly cloudy, with a low around 43.
Tuesday
A 50 percent chance of rain. Mostly cloudy, with a high near 61.
Tuesday Night
A 50 percent chance of rain and thunderstorms. Mostly cloudy, with a low around 47.
Wednesday
A 50 percent chance of rain and thunderstorms. Mostly cloudy, with a high near 65.
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ABOUT THIS FORECAST

 
Point Forecast:
Darien WI
 42.59°N 88.72°W (Elev. 945 ft)
1:35 am CDT Mar 26, 2026
2am CDT Mar 26, 2026-6pm CDT Apr 1, 2026
 
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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