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.

Partly Cloudy

34°F

1°C

Humidity 81%
Wind Speed Calm
Barometer 30.05 in
Dewpoint 28°F (-2°C)
Visibility 10.00 mi
Last update 18 Mar 11:35 pm CDT
Extended Forecast for

Darien WI

  • Tonight

    Tonight: A slight chance of freezing rain after midnight. Mostly cloudy, with a low around 30. Southwest wind around 5 mph becoming calm. Chance of precipitation is 20%.

    Low: 30 °F

    Slight Chance
    Freezing Rain

  • Thursday

    Thursday: A slight chance of freezing rain before 8am. Partly sunny, with a high near 48. Calm wind becoming southeast around 5 mph in the afternoon. Chance of precipitation is 10%.

    High: 48 °F

    Slight Chance
    Freezing Rain
    then Mostly
    Sunny

  • Thursday Night

    Thursday Night: Mostly cloudy, with a low around 33. East wind around 5 mph becoming southwest after midnight.

    Low: 33 °F

    Mostly Cloudy

  • Friday

    Friday: Mostly cloudy, with a high near 58. Southwest wind around 10 mph.

    High: 58 °F

    Mostly Cloudy

  • Friday Night

    Friday Night: Mostly cloudy, with a low around 37. Northwest wind around 5 mph.

    Low: 37 °F

    Mostly Cloudy

  • Saturday

    Saturday: Mostly sunny, with a high near 64. Southwest wind 5 to 10 mph.

    High: 64 °F

    Mostly Sunny

  • Saturday Night

    Saturday Night: Partly cloudy, with a low around 41. South wind around 10 mph.

    Low: 41 °F

    Partly Cloudy

  • Sunday

    Sunday: A 20 percent chance of rain before 1pm. Mostly cloudy, with a high near 49. North wind 10 to 15 mph, with gusts as high as 25 mph.

    High: 49 °F

    Slight Chance
    Rain

  • Sunday Night

    Sunday Night: Mostly cloudy, with a low around 24.

    Low: 24 °F

    Mostly Cloudy

Detailed Forecast

Tonight
A slight chance of freezing rain after midnight. Mostly cloudy, with a low around 30. Southwest wind around 5 mph becoming calm. Chance of precipitation is 20%.
Thursday
A slight chance of freezing rain before 8am. Partly sunny, with a high near 48. Calm wind becoming southeast around 5 mph in the afternoon. Chance of precipitation is 10%.
Thursday Night
Mostly cloudy, with a low around 33. East wind around 5 mph becoming southwest after midnight.
Friday
Mostly cloudy, with a high near 58. Southwest wind around 10 mph.
Friday Night
Mostly cloudy, with a low around 37. Northwest wind around 5 mph.
Saturday
Mostly sunny, with a high near 64. Southwest wind 5 to 10 mph.
Saturday Night
Partly cloudy, with a low around 41. South wind around 10 mph.
Sunday
A 20 percent chance of rain before 1pm. Mostly cloudy, with a high near 49. North wind 10 to 15 mph, with gusts as high as 25 mph.
Sunday Night
Mostly cloudy, with a low around 24.
Monday
Mostly sunny, with a high near 42.
Monday Night
Partly cloudy, with a low around 27.
Tuesday
Mostly cloudy, with a high near 49.
Tuesday Night
Mostly cloudy, with a low around 32.
Wednesday
Mostly cloudy, with a high near 54.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Darien WI
 42.59°N 88.72°W (Elev. 945 ft)
Last Update:
10:41 pm CDT Mar 18, 2026
Forecast Valid:
11pm CDT Mar 18, 2026-6pm CDT Mar 25, 2026
 
Forecast Discussion
 
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Additional Resources

Radar & Satellite Image

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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