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

39°F

4°C

Humidity 93%
Wind Speed E 13 G 21 mph
Barometer 29.72 in
Dewpoint 37°F (3°C)
Visibility 7.00 mi
Wind Chill31°F (-1°C)
Last update 10 Mar 9:15 pm CDT
Extended Forecast for

Darien WI

Severe T-storm Watch until March 11, 12:00am
Click here for hazard details and duration
Severe T-storm Watch
  •  
    Severe T-storm Watch until March 11, 12:00am

    NOW until 12:00am Wed

    Severe T-storm Watch

  • Tonight

    Low: 33 °F

    Severe
    Thunderstorms
    and Patchy
    Fog

  • Wednesday

    Wednesday: A chance of rain or freezing rain before noon, then snow likely. Patchy fog before 4pm. Otherwise, cloudy, with a high near 37. Breezy, with a northwest wind 15 to 20 mph, with gusts as high as 30 mph. Chance of precipitation is 60%. Little or no ice accumulation expected. New snow accumulation of less than a half inch possible.

    High: 37 °F

    Wintry Mix
    Likely and
    Patchy Fog

  • Wednesday Night

    Wednesday Night: Cloudy during the early evening, then gradual clearing, with a low around 23. Northwest wind 10 to 15 mph decreasing to 5 to 10 mph after midnight. Winds could gust as high as 25 mph.

    Low: 23 °F

    Gradual
    Clearing

  • Thursday

    Thursday: Increasing clouds, with a high near 45. West wind 5 to 10 mph increasing to 10 to 15 mph in the afternoon.

    High: 45 °F

    Increasing
    Clouds

  • Thursday Night

    Thursday Night: Rain before 4am, then rain, possibly mixed with snow. Low around 35. Windy, with a south wind 15 to 20 mph increasing to 25 to 30 mph after midnight. Winds could gust as high as 35 mph. Chance of precipitation is 80%. Little or no snow accumulation expected.

    Low: 35 °F

    Rain Likely
    and Breezy
    then
    Rain/Snow and
    Windy

  • Friday

    Friday: A 10 percent chance of snow before 7am. Mostly sunny, with a high near 43. Windy, with a northwest wind 25 to 30 mph, with gusts as high as 45 mph.

    High: 43 °F

    Windy. Slight
    Chance Snow
    then Mostly
    Sunny

  • Friday Night

    Friday Night: Increasing clouds, with a low around 25. Northwest wind 5 to 10 mph becoming north after midnight.

    Low: 25 °F

    Increasing
    Clouds

  • Saturday

    Saturday: A 30 percent chance of snow. Cloudy, with a high near 42. Southeast wind 5 to 10 mph.

    High: 42 °F

    Chance Snow

Detailed Forecast

Tonight
Rain and thunderstorms likely before 4am, then a slight chance of rain. Some of the storms could be severe. Patchy fog. Otherwise, cloudy, with a low around 33. North wind around 10 mph. Chance of precipitation is 70%. New rainfall amounts between a quarter and half of an inch possible.
Wednesday
A chance of rain or freezing rain before noon, then snow likely. Patchy fog before 4pm. Otherwise, cloudy, with a high near 37. Breezy, with a northwest wind 15 to 20 mph, with gusts as high as 30 mph. Chance of precipitation is 60%. Little or no ice accumulation expected. New snow accumulation of less than a half inch possible.
Wednesday Night
Cloudy during the early evening, then gradual clearing, with a low around 23. Northwest wind 10 to 15 mph decreasing to 5 to 10 mph after midnight. Winds could gust as high as 25 mph.
Thursday
Increasing clouds, with a high near 45. West wind 5 to 10 mph increasing to 10 to 15 mph in the afternoon.
Thursday Night
Rain before 4am, then rain, possibly mixed with snow. Low around 35. Windy, with a south wind 15 to 20 mph increasing to 25 to 30 mph after midnight. Winds could gust as high as 35 mph. Chance of precipitation is 80%. Little or no snow accumulation expected.
Friday
A 10 percent chance of snow before 7am. Mostly sunny, with a high near 43. Windy, with a northwest wind 25 to 30 mph, with gusts as high as 45 mph.
Friday Night
Increasing clouds, with a low around 25. Northwest wind 5 to 10 mph becoming north after midnight.
Saturday
A 30 percent chance of snow. Cloudy, with a high near 42. Southeast wind 5 to 10 mph.
Saturday Night
Rain and snow likely, mainly after 1am. Cloudy, with a low around 30. Chance of precipitation is 70%.
Sunday
Rain and snow likely. Cloudy, with a high near 40. Breezy. Chance of precipitation is 70%.
Sunday Night
Snow likely. Mostly cloudy, with a low around 10. Blustery. Chance of precipitation is 60%.
Monday
Partly sunny, with a high near 23.
Monday Night
Mostly clear, with a low around 4.
Tuesday
Mostly sunny, with a high near 30.
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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:
8:37 pm CDT Mar 10, 2026
Forecast Valid:
9pm CDT Mar 10, 2026-6pm CDT Mar 17, 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