Current conditions at

Janesville-Rock County (KJVL)

Lat: 42.62°NLon: 89.04°WElev: 801ft.

Partly Cloudy

34°F

1°C

Humidity 70%
Wind Speed S 5 mph
Barometer 29.85 in
Dewpoint 25°F (-4°C)
Visibility 10.00 mi
Wind Chill29°F (-2°C)
Last update 26 Feb 7:45 pm CST
Extended Forecast for

Darien WI

  • Tonight

    Tonight: Mostly clear, with a low around 27. Southwest wind around 5 mph.

    Low: 27 °F

    Mostly Clear

  • Friday

    Friday: Sunny, with a high near 60. Breezy, with a southwest wind 5 to 10 mph increasing to 15 to 20 mph in the afternoon. Winds could gust as high as 30 mph.

    High: 60 °F

    Sunny then
    Sunny and
    Breezy

  • Friday Night

    Friday Night: Partly cloudy, with a low around 24. West wind 5 to 15 mph becoming north after midnight.

    Low: 24 °F

    Partly Cloudy

  • Saturday

    Saturday: Snow likely.  Mostly cloudy, with a high near 30. North wind 5 to 10 mph.  Chance of precipitation is 60%. New snow accumulation of 1 to 2 inches possible.

    High: 30 °F

    Snow Likely

  • Saturday Night

    Saturday Night: A 20 percent chance of snow before midnight.  Cloudy during the early evening, then gradual clearing, with a low around 12. North wind 5 to 10 mph.

    Low: 12 °F

    Slight Chance
    Snow then
    Mostly Clear

  • Sunday

    Sunday: Mostly sunny, with a high near 30. Northeast wind 5 to 10 mph.

    High: 30 °F

    Mostly Sunny

  • Sunday Night

    Sunday Night: A 30 percent chance of snow, mainly before midnight.  Mostly cloudy, with a low around 15. East wind around 5 mph.

    Low: 15 °F

    Chance Snow

  • Monday

    Monday: Mostly cloudy through mid morning, then becoming sunny, with a high near 36. East wind 5 to 10 mph becoming southeast in the afternoon.

    High: 36 °F

    Sunny

  • Monday Night

    Monday Night: Mostly cloudy, with a low around 21.

    Low: 21 °F

    Mostly Cloudy

Detailed Forecast

Tonight
Mostly clear, with a low around 27. Southwest wind around 5 mph.
Friday
Sunny, with a high near 60. Breezy, with a southwest wind 5 to 10 mph increasing to 15 to 20 mph in the afternoon. Winds could gust as high as 30 mph.
Friday Night
Partly cloudy, with a low around 24. West wind 5 to 15 mph becoming north after midnight.
Saturday
Snow likely. Mostly cloudy, with a high near 30. North wind 5 to 10 mph. Chance of precipitation is 60%. New snow accumulation of 1 to 2 inches possible.
Saturday Night
A 20 percent chance of snow before midnight. Cloudy during the early evening, then gradual clearing, with a low around 12. North wind 5 to 10 mph.
Sunday
Mostly sunny, with a high near 30. Northeast wind 5 to 10 mph.
Sunday Night
A 30 percent chance of snow, mainly before midnight. Mostly cloudy, with a low around 15. East wind around 5 mph.
Monday
Mostly cloudy through mid morning, then becoming sunny, with a high near 36. East wind 5 to 10 mph becoming southeast in the afternoon.
Monday Night
Mostly cloudy, with a low around 21.
Tuesday
A chance of rain and snow, mainly after noon. Mostly cloudy, with a high near 40. Chance of precipitation is 30%.
Tuesday Night
A slight chance of rain and snow. Mostly cloudy, with a low around 24. Chance of precipitation is 20%.
Wednesday
A 40 percent chance of rain. Mostly cloudy, with a high near 47.
Wednesday Night
Rain likely. Cloudy, with a low around 33. Chance of precipitation is 60%.
Thursday
A 50 percent chance of rain. Mostly cloudy, with a high near 51.
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ABOUT THIS FORECAST

 
Point Forecast:
Darien WI
 42.59°N 88.72°W (Elev. 945 ft)
7:32 pm CST Feb 26, 2026
8pm CST Feb 26, 2026-6pm CST Mar 5, 2026
 
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Additional Resources

Radar & Satellite Image

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Hourly Weather Forecast

National Digital Forecast Database