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.

Fair

32°F

0°C

Humidity 55%
Wind Speed N 9 mph
Barometer 30.39 in
Dewpoint 18°F (-8°C)
Visibility 10.00 mi
Wind Chill24°F (-4°C)
Last update 7 Apr 12:10 am CDT
Extended Forecast for

Darien WI

  • Overnight

    Overnight: Partly cloudy, with a low around 21. Northeast wind around 5 mph.

    Low: 21 °F

    Partly Cloudy

  • Tuesday

    Tuesday: Sunny, with a high near 42. Northeast wind 5 to 10 mph becoming southeast in the afternoon.

    High: 42 °F

    Sunny

  • Tuesday Night

    Tuesday Night: A chance of snow before 3am, then a chance of rain and snow between 3am and 4am, then a chance of rain after 4am. Increasing clouds, with a low around 28. Southeast wind 10 to 15 mph. Chance of precipitation is 40%.

    Low: 28 °F

    Partly Cloudy
    then Chance
    Rain/Snow

  • Wednesday

    Wednesday: A slight chance of rain and snow showers before 7am, then a slight chance of rain showers after 1pm. Partly sunny, with a high near 63. Windy, with a south wind 15 to 25 mph, with gusts as high as 35 mph. Chance of precipitation is 20%.

    High: 63 °F

    Slight Chance
    Rain/Snow and
    Windy

  • Wednesday Night

    Wednesday Night: Showers. Low around 46. Breezy, with a south wind 15 to 20 mph decreasing to 10 to 15 mph after midnight. Winds could gust as high as 30 mph. Chance of precipitation is 80%. New precipitation amounts between a quarter and half of an inch possible.

    Low: 46 °F

    Showers and
    Breezy

  • Thursday

    Thursday: A 20 percent chance of showers after 1pm. Mostly sunny, with a high near 62. West wind around 10 mph.

    High: 62 °F

    Mostly Sunny
    then Slight
    Chance
    Showers

  • Thursday Night

    Thursday Night: Showers likely, then showers and possibly a thunderstorm after 10pm. Low around 42. West wind around 5 mph becoming northeast after midnight. Chance of precipitation is 80%. New rainfall amounts between a half and three quarters of an inch possible.

    Low: 42 °F

    Showers

  • Friday

    Friday: A 20 percent chance of showers before 1pm. Mostly cloudy, with a high near 56. Northeast wind 5 to 10 mph.

    High: 56 °F

    Slight Chance
    Showers

  • Friday Night

    Friday Night: Partly cloudy, with a low around 35.

    Low: 35 °F

    Partly Cloudy

Detailed Forecast

Overnight
Partly cloudy, with a low around 21. Northeast wind around 5 mph.
Tuesday
Sunny, with a high near 42. Northeast wind 5 to 10 mph becoming southeast in the afternoon.
Tuesday Night
A chance of snow before 3am, then a chance of rain and snow between 3am and 4am, then a chance of rain after 4am. Increasing clouds, with a low around 28. Southeast wind 10 to 15 mph. Chance of precipitation is 40%.
Wednesday
A slight chance of rain and snow showers before 7am, then a slight chance of rain showers after 1pm. Partly sunny, with a high near 63. Windy, with a south wind 15 to 25 mph, with gusts as high as 35 mph. Chance of precipitation is 20%.
Wednesday Night
Showers. Low around 46. Breezy, with a south wind 15 to 20 mph decreasing to 10 to 15 mph after midnight. Winds could gust as high as 30 mph. Chance of precipitation is 80%. New precipitation amounts between a quarter and half of an inch possible.
Thursday
A 20 percent chance of showers after 1pm. Mostly sunny, with a high near 62. West wind around 10 mph.
Thursday Night
Showers likely, then showers and possibly a thunderstorm after 10pm. Low around 42. West wind around 5 mph becoming northeast after midnight. Chance of precipitation is 80%. New rainfall amounts between a half and three quarters of an inch possible.
Friday
A 20 percent chance of showers before 1pm. Mostly cloudy, with a high near 56. Northeast wind 5 to 10 mph.
Friday Night
Partly cloudy, with a low around 35.
Saturday
Mostly sunny, with a high near 59.
Saturday Night
A 50 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 45.
Sunday
A 50 percent chance of showers and thunderstorms. Mostly cloudy, with a high near 73.
Sunday Night
Showers likely and possibly a thunderstorm. Cloudy, with a low around 60. Chance of precipitation is 70%.
Monday
Showers likely and possibly a thunderstorm. Mostly cloudy, with a high near 75. Chance of precipitation is 60%.
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:
12:11 am CDT Apr 7, 2026
Forecast Valid:
12am CDT Apr 7, 2026-6pm CDT Apr 13, 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