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.

Rain

72°F

22°C

Humidity 53%
Wind Speed SW 8 mph
Barometer 29.71 in
Dewpoint 54°F (12°C)
Visibility 10.00 mi
Last update 30 Mar 10:10 pm CDT
Extended Forecast for

Darien WI

Severe T-storm Watch until March 31, 03:00am
Click here for hazard details and duration
Severe T-storm Watch
  •  
    Severe T-storm Watch until March 31, 03:00am

    NOW until 3:00am Tue

    Severe T-storm Watch

  • Tonight

    Low: 60 °F

    Chance
    T-storms

  • Tuesday

    Tuesday: A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after noon. Mostly cloudy, with a high near 70. Southwest wind around 15 mph becoming northwest in the afternoon. Winds could gust as high as 25 mph. Chance of precipitation is 70%. New rainfall amounts between a half and three quarters of an inch possible.

    High: 70 °F

    Chance
    T-storms then
    Showers
    Likely

  • Tuesday Night

    Tuesday Night: A 40 percent chance of showers. Mostly cloudy, with a low around 33. Northeast wind 10 to 15 mph.

    Low: 33 °F

    Chance
    Showers

  • Wednesday

    Wednesday: A chance of rain before 4pm, then a chance of rain and snow. Mostly cloudy, with a high near 40. Northeast wind around 15 mph, with gusts as high as 25 mph. Chance of precipitation is 40%.

    High: 40 °F

    Slight Chance
    Rain then
    Chance
    Rain/Snow

  • Wednesday Night

    Wednesday Night: Rain, possibly mixed with snow, becoming all rain after 1am. Some thunder is also possible. Low around 33. East wind around 15 mph, with gusts as high as 25 mph. Chance of precipitation is 100%. New snow accumulation of less than a half inch possible.

    Low: 33 °F

    Rain/Snow

  • Thursday

    Thursday: Rain and possibly a thunderstorm. High near 61. East wind around 15 mph becoming south in the afternoon. Winds could gust as high as 25 mph. Chance of precipitation is 100%. New rainfall amounts between a half and three quarters of an inch possible.

    High: 61 °F

    Rain

  • Thursday Night

    Thursday Night: Rain likely, mainly before 1am. Mostly cloudy, with a low around 41. South wind around 15 mph becoming west after midnight. Winds could gust as high as 25 mph. Chance of precipitation is 70%. New precipitation amounts between a quarter and half of an inch possible.

    Low: 41 °F

    Rain Likely

  • Friday

    Friday: A 20 percent chance of rain after 1pm. Partly sunny, with a high near 61. West wind around 10 mph becoming east in the afternoon.

    High: 61 °F

    Mostly Cloudy
    then Slight
    Chance Rain

Detailed Forecast

Tonight
A 50 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 60. Southwest wind 10 to 15 mph.
Tuesday
A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after noon. Mostly cloudy, with a high near 70. Southwest wind around 15 mph becoming northwest in the afternoon. Winds could gust as high as 25 mph. Chance of precipitation is 70%. New rainfall amounts between a half and three quarters of an inch possible.
Tuesday Night
A 40 percent chance of showers. Mostly cloudy, with a low around 33. Northeast wind 10 to 15 mph.
Wednesday
A chance of rain before 4pm, then a chance of rain and snow. Mostly cloudy, with a high near 40. Northeast wind around 15 mph, with gusts as high as 25 mph. Chance of precipitation is 40%.
Wednesday Night
Rain, possibly mixed with snow, becoming all rain after 1am. Some thunder is also possible. Low around 33. East wind around 15 mph, with gusts as high as 25 mph. Chance of precipitation is 100%. New snow accumulation of less than a half inch possible.
Thursday
Rain and possibly a thunderstorm. High near 61. East wind around 15 mph becoming south in the afternoon. Winds could gust as high as 25 mph. Chance of precipitation is 100%. New rainfall amounts between a half and three quarters of an inch possible.
Thursday Night
Rain likely, mainly before 1am. Mostly cloudy, with a low around 41. South wind around 15 mph becoming west after midnight. Winds could gust as high as 25 mph. Chance of precipitation is 70%. New precipitation amounts between a quarter and half of an inch possible.
Friday
A 20 percent chance of rain after 1pm. Partly sunny, with a high near 61. West wind around 10 mph becoming east in the afternoon.
Friday Night
A chance of rain and thunderstorms, then rain likely and possibly a thunderstorm after 1am. Increasing clouds, with a low around 41. Chance of precipitation is 70%.
Saturday
Rain likely and possibly a thunderstorm. Mostly cloudy, with a high near 60. Chance of precipitation is 60%.
Saturday Night
A 40 percent chance of rain. Cloudy, with a low around 33.
Sunday
Mostly cloudy, with a high near 48.
Sunday Night
Partly cloudy, with a low around 28.
Monday
Sunny, 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:
9:28 pm CDT Mar 30, 2026
Forecast Valid:
10pm CDT Mar 30, 2026-6pm CDT Apr 6, 2026
 
Forecast Discussion
 
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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

National Digital Forecast Database Maximum Temperature Forecast

High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation