National Oceanic and Atmospheric Administration National Weather Service United States Department of Commerce
Current conditions at

Janesville-Rock County (KJVL)

Lat: 42.62°NLon: 89.04°WElev: 801ft.

Fair

72°F

22°C

Humidity 38%
Wind Speed SW 12 G 22 mph
Barometer 29.66 in
Dewpoint 45°F (7°C)
Visibility 10.00 mi
Last update 9 Mar 4:45 pm CDT
Extended Forecast for

2 Miles W Darien WI

  • Tonight

    Tonight: Mostly clear, with a low around 42. Southwest wind 5 to 10 mph becoming light and variable.

    Low: 42 °F

    Mostly Clear

  • Tuesday

    Tuesday: A 30 percent chance of showers and thunderstorms, mainly after 5pm. Partly sunny, with a high near 50. Northeast wind 10 to 15 mph.

    High: 50 °F

    Partly Sunny
    then Chance
    Showers

  • Tuesday Night

    Tuesday Night: Rain and thunderstorms before 1am, then rain likely and possibly a thunderstorm between 1am and 4am, then rain likely after 4am. Low around 34. Northeast wind 10 to 15 mph. Chance of precipitation is 90%. New rainfall amounts between a quarter and half of an inch possible.

    Low: 34 °F

    Rain

  • Wednesday

    Wednesday: Rain likely before 10am, then rain and snow likely between 10am and 1pm, then a chance of snow after 1pm. Cloudy, with a high near 40. Breezy, with a north wind 15 to 20 mph, with gusts as high as 30 mph. Chance of precipitation is 60%. Little or no snow accumulation expected.

    High: 40 °F

    Rain/Snow
    Likely and
    Breezy

  • Wednesday Night

    Wednesday Night: Mostly cloudy, then gradually becoming mostly clear, with a low around 23. Northwest wind 5 to 10 mph.

    Low: 23 °F

    Decreasing
    Clouds

  • Thursday

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

    High: 45 °F

    Increasing
    Clouds

  • Thursday Night

    Thursday Night: Rain likely. Cloudy, with a low around 34. Breezy, with a south wind 10 to 15 mph increasing to 15 to 20 mph after midnight. Winds could gust as high as 30 mph. Chance of precipitation is 70%. New precipitation amounts of less than a tenth of an inch possible.

    Low: 34 °F

    Rain Likely
    and Breezy

  • Friday

    Friday: A 20 percent chance of rain before 1pm. Partly sunny, with a high near 46. Windy, with a northwest wind 15 to 25 mph, with gusts as high as 30 mph.

    High: 46 °F

    Slight Chance
    Rain and
    Windy

  • Friday Night

    Friday Night: A 20 percent chance of snow after 1am. Mostly cloudy, with a low around 27.

    Low: 27 °F

    Mostly Cloudy
    then Slight
    Chance Snow

Detailed Forecast

Tonight
Mostly clear, with a low around 42. Southwest wind 5 to 10 mph becoming light and variable.
Tuesday
A 30 percent chance of showers and thunderstorms, mainly after 5pm. Partly sunny, with a high near 50. Northeast wind 10 to 15 mph.
Tuesday Night
Rain and thunderstorms before 1am, then rain likely and possibly a thunderstorm between 1am and 4am, then rain likely after 4am. Low around 34. Northeast wind 10 to 15 mph. Chance of precipitation is 90%. New rainfall amounts between a quarter and half of an inch possible.
Wednesday
Rain likely before 10am, then rain and snow likely between 10am and 1pm, then a chance of snow after 1pm. Cloudy, with a high near 40. Breezy, with a north wind 15 to 20 mph, with gusts as high as 30 mph. Chance of precipitation is 60%. Little or no snow accumulation expected.
Wednesday Night
Mostly cloudy, then gradually becoming mostly clear, with a low around 23. Northwest wind 5 to 10 mph.
Thursday
Increasing clouds, with a high near 45. West wind 5 to 15 mph becoming southwest in the afternoon.
Thursday Night
Rain likely. Cloudy, with a low around 34. Breezy, with a south wind 10 to 15 mph increasing to 15 to 20 mph after midnight. Winds could gust as high as 30 mph. Chance of precipitation is 70%. New precipitation amounts of less than a tenth of an inch possible.
Friday
A 20 percent chance of rain before 1pm. Partly sunny, with a high near 46. Windy, with a northwest wind 15 to 25 mph, with gusts as high as 30 mph.
Friday Night
A 20 percent chance of snow after 1am. Mostly cloudy, with a low around 27.
Saturday
A chance of snow before 1pm, then a slight chance of rain and snow. Cloudy, with a high near 42. Chance of precipitation is 30%.
Saturday Night
Rain and snow likely. Cloudy, with a low around 30. Chance of precipitation is 60%.
Sunday
Rain and snow. High near 41. Breezy. Chance of precipitation is 80%.
Sunday Night
A 30 percent chance of snow. Mostly cloudy, with a low around 15.
Monday
Mostly cloudy, with a high near 28.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
2 Miles W Darien WI
 42.59°N 88.75°W (Elev. 889 ft)
Last Update:
3:13 pm CDT Mar 9, 2026
Forecast Valid:
5pm CDT Mar 9, 2026-6pm CDT Mar 16, 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