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.

Overcast

54°F

12°C

Humidity 82%
Wind Speed SW 15 mph
Barometer 29.64 in
Dewpoint 48°F (9°C)
Visibility 10.00 mi
Wind Chill50°F (10°C)
Last update 4 Nov 2:45 pm CST
Extended Forecast for

Darien WI

  • Tonight

    Tonight: A chance of sprinkles between 3am and 4am, then a chance of rain after 4am. Cloudy, with a low around 45. Southwest wind around 15 mph. Chance of precipitation is 40%.

    Low: 45 °F

    Cloudy then
    Chance Rain

  • Thursday

    Thursday: Rain likely, mainly before noon. Cloudy, with a high near 52. Southwest wind 10 to 15 mph becoming northwest in the afternoon. Chance of precipitation is 70%. New precipitation amounts of less than a tenth of an inch possible.

    High: 52 °F

    Rain Likely
    then Chance
    Rain

  • Thursday Night

    Thursday Night: Mostly cloudy, with a low around 34. North wind 10 to 15 mph.

    Low: 34 °F

    Mostly Cloudy

  • Friday

    Friday: Partly sunny, with a high near 48. North wind 5 to 15 mph.

    High: 48 °F

    Partly Sunny

  • Friday Night

    Friday Night: Mostly clear, with a low around 27. North wind around 5 mph becoming calm in the evening.

    Low: 27 °F

    Mostly Clear

  • Saturday

    Saturday: Sunny, with a high near 51. Calm wind becoming northwest around 5 mph.

    High: 51 °F

    Sunny

  • Saturday Night

    Saturday Night: Mostly clear, with a low around 31. Calm wind becoming west around 5 mph after midnight.

    Low: 31 °F

    Mostly Clear

  • Sunday

    Sunday: Sunny, with a high near 57. West wind 5 to 10 mph.

    High: 57 °F

    Sunny

  • Sunday Night

    Sunday Night: Mostly clear, with a low around 33.

    Low: 33 °F

    Mostly Clear

Detailed Forecast

Tonight
A chance of sprinkles between 3am and 4am, then a chance of rain after 4am. Cloudy, with a low around 45. Southwest wind around 15 mph. Chance of precipitation is 40%.
Thursday
Rain likely, mainly before noon. Cloudy, with a high near 52. Southwest wind 10 to 15 mph becoming northwest in the afternoon. Chance of precipitation is 70%. New precipitation amounts of less than a tenth of an inch possible.
Thursday Night
Mostly cloudy, with a low around 34. North wind 10 to 15 mph.
Friday
Partly sunny, with a high near 48. North wind 5 to 15 mph.
Friday Night
Mostly clear, with a low around 27. North wind around 5 mph becoming calm in the evening.
Saturday
Sunny, with a high near 51. Calm wind becoming northwest around 5 mph.
Saturday Night
Mostly clear, with a low around 31. Calm wind becoming west around 5 mph after midnight.
Sunday
Sunny, with a high near 57. West wind 5 to 10 mph.
Sunday Night
Mostly clear, with a low around 33.
Monday
Sunny, with a high near 60.
Monday Night
Mostly clear, with a low around 38.
Tuesday
Sunny, with a high near 60.
Tuesday Night
Partly cloudy, with a low around 36.
Veterans Day
Mostly sunny, with a high near 59.
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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:
2:31 pm CST Nov 4, 2026
Forecast Valid:
3pm CST Nov 4, 2026-6pm CST Nov 11, 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