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

63°F

17°C

Humidity 25%
Wind Speed SW 14 mph
Barometer 30.07 in
Dewpoint 27°F (-3°C)
Visibility 10.00 mi
Last update 29 Mar 1:45 pm CDT
Extended Forecast for

Darien WI

  • This Afternoon

    This Afternoon: Partly sunny, with a high near 64. Southwest wind around 15 mph.

    High: 64 °F

    Partly Sunny

  • Tonight

    Tonight: Mostly clear, with a low around 44. South wind 5 to 10 mph.

    Low: 44 °F

    Mostly Clear

  • Monday

    Monday: Sunny, with a high near 75. South wind 5 to 10 mph.

    High: 75 °F

    Sunny

  • Monday Night

    Monday Night: A slight chance of rain before 10pm, then a chance of rain and thunderstorms between 10pm and 4am, then rain likely and possibly a thunderstorm after 4am. Increasing clouds, with a low around 57. Southwest wind 10 to 15 mph. Chance of precipitation is 60%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

    Low: 57 °F

    Chance
    T-storms then
    Rain Likely

  • Tuesday

    Tuesday: Rain and possibly a thunderstorm. High near 73. Breezy, with a southwest wind 15 to 20 mph, with gusts as high as 30 mph. Chance of precipitation is 80%. New rainfall amounts between a quarter and half of an inch possible.

    High: 73 °F

    Rain and
    Breezy

  • Tuesday Night

    Tuesday Night: A chance of rain and thunderstorms. Mostly cloudy, with a low around 35. North wind 10 to 15 mph. Chance of precipitation is 50%.

    Low: 35 °F

    Chance
    T-storms then
    Chance Rain

  • Wednesday

    Wednesday: A slight chance of rain and snow after 1pm. Mostly cloudy, with a high near 43. Northeast wind 10 to 15 mph. Chance of precipitation is 20%.

    High: 43 °F

    Mostly Cloudy
    then Slight
    Chance
    Rain/Snow

  • Wednesday Night

    Wednesday Night: Rain and snow likely before 4am, then rain, snow, and freezing rain likely. Cloudy, with a low around 32. Breezy, with a northeast wind 15 to 20 mph, with gusts as high as 30 mph. Chance of precipitation is 70%. New precipitation amounts between a half and three quarters of an inch possible.

    Low: 32 °F

    Wintry Mix
    Likely and
    Breezy

  • Thursday

    Thursday: Rain, snow, and freezing rain likely before 10am, then rain and snow likely between 10am and 1pm, then rain likely after 1pm. Cloudy, with a high near 45. Breezy. Chance of precipitation is 70%.

    High: 45 °F

    Wintry Mix
    Likely and
    Breezy

Detailed Forecast

This Afternoon
Partly sunny, with a high near 64. Southwest wind around 15 mph.
Tonight
Mostly clear, with a low around 44. South wind 5 to 10 mph.
Monday
Sunny, with a high near 75. South wind 5 to 10 mph.
Monday Night
A slight chance of rain before 10pm, then a chance of rain and thunderstorms between 10pm and 4am, then rain likely and possibly a thunderstorm after 4am. Increasing clouds, with a low around 57. Southwest wind 10 to 15 mph. Chance of precipitation is 60%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Tuesday
Rain and possibly a thunderstorm. High near 73. Breezy, with a southwest wind 15 to 20 mph, with gusts as high as 30 mph. Chance of precipitation is 80%. New rainfall amounts between a quarter and half of an inch possible.
Tuesday Night
A chance of rain and thunderstorms. Mostly cloudy, with a low around 35. North wind 10 to 15 mph. Chance of precipitation is 50%.
Wednesday
A slight chance of rain and snow after 1pm. Mostly cloudy, with a high near 43. Northeast wind 10 to 15 mph. Chance of precipitation is 20%.
Wednesday Night
Rain and snow likely before 4am, then rain, snow, and freezing rain likely. Cloudy, with a low around 32. Breezy, with a northeast wind 15 to 20 mph, with gusts as high as 30 mph. Chance of precipitation is 70%. New precipitation amounts between a half and three quarters of an inch possible.
Thursday
Rain, snow, and freezing rain likely before 10am, then rain and snow likely between 10am and 1pm, then rain likely after 1pm. Cloudy, with a high near 45. Breezy. Chance of precipitation is 70%.
Thursday Night
A chance of rain and snow before 10pm, then a chance of rain. Cloudy, with a low around 32. Chance of precipitation is 50%.
Friday
A 20 percent chance of rain. Mostly cloudy, with a high near 50.
Friday Night
A 40 percent chance of rain. Mostly cloudy, with a low around 37.
Saturday
Rain likely. Mostly cloudy, with a high near 61. Chance of precipitation is 70%.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Darien WI
 42.59°N 88.72°W (Elev. 945 ft)
Last Update:
1:41 pm CDT Mar 29, 2026
Forecast Valid:
2pm CDT Mar 29, 2026-6pm CDT Apr 4, 2026
 
Forecast Discussion
 
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Additional Resources

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Hourly Weather Forecast

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High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation