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

46°F

8°C

Humidity 66%
Wind Speed SW 7 mph
Barometer 29.93 in
Dewpoint 36°F (2°C)
Visibility 10.00 mi
Wind Chill42°F (6°C)
Last update 16 Feb 11:15 pm CST
Extended Forecast for

2 Miles W Darien WI

  • Tonight

    Tonight: Mostly cloudy, with a low around 37. Calm wind becoming east around 5 mph.

    Low: 37 °F

    Mostly Cloudy

  • Tuesday

    Tuesday: A 20 percent chance of rain after 5pm. Mostly cloudy, with a high near 54. Southeast wind 5 to 15 mph.

    High: 54 °F

    Mostly Cloudy
    then Slight
    Chance Rain

  • Tuesday Night

    Tuesday Night: Rain likely and possibly a thunderstorm before 3am, then a chance of rain and thunderstorms, mainly between 3am and 5am. Cloudy, with a low around 46. Southeast wind around 15 mph becoming southwest after midnight. Chance of precipitation is 70%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

    Low: 46 °F

    Rain Likely

  • Wednesday

    Wednesday: Sunny, with a high near 61. Windy, with a west wind 15 to 25 mph, with gusts as high as 35 mph.

    High: 61 °F

    Sunny and
    Windy

  • Wednesday Night

    Wednesday Night: Partly cloudy, with a low around 34. Southwest wind 5 to 10 mph becoming southeast after midnight.

    Low: 34 °F

    Partly Cloudy

  • Thursday

    Thursday: A 50 percent chance of rain, mainly after noon. Mostly sunny, with a high near 56. East wind 5 to 10 mph.

    High: 56 °F

    Slight Chance
    Rain then
    Chance Rain

  • Thursday Night

    Thursday Night: Rain before 3am, then rain and snow likely. Low around 33. East wind 10 to 15 mph becoming west after midnight. Chance of precipitation is 80%. New precipitation amounts between a tenth and quarter of an inch possible.

    Low: 33 °F

    Rain then
    Rain/Snow
    Likely

  • Friday

    Friday: A chance of rain and snow before noon, then a chance of snow. Mostly cloudy, with a high near 40. Breezy, with a west wind 15 to 20 mph, with gusts as high as 30 mph. Chance of precipitation is 40%.

    High: 40 °F

    Breezy.
    Chance
    Rain/Snow
    then Chance
    Snow

  • Friday Night

    Friday Night: A 20 percent chance of snow before midnight. Mostly cloudy, with a low around 24.

    Low: 24 °F

    Slight Chance
    Snow then
    Mostly Cloudy

Detailed Forecast

Tonight
Mostly cloudy, with a low around 37. Calm wind becoming east around 5 mph.
Tuesday
A 20 percent chance of rain after 5pm. Mostly cloudy, with a high near 54. Southeast wind 5 to 15 mph.
Tuesday Night
Rain likely and possibly a thunderstorm before 3am, then a chance of rain and thunderstorms, mainly between 3am and 5am. Cloudy, with a low around 46. Southeast wind around 15 mph becoming southwest after midnight. Chance of precipitation is 70%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Wednesday
Sunny, with a high near 61. Windy, with a west wind 15 to 25 mph, with gusts as high as 35 mph.
Wednesday Night
Partly cloudy, with a low around 34. Southwest wind 5 to 10 mph becoming southeast after midnight.
Thursday
A 50 percent chance of rain, mainly after noon. Mostly sunny, with a high near 56. East wind 5 to 10 mph.
Thursday Night
Rain before 3am, then rain and snow likely. Low around 33. East wind 10 to 15 mph becoming west after midnight. Chance of precipitation is 80%. New precipitation amounts between a tenth and quarter of an inch possible.
Friday
A chance of rain and snow before noon, then a chance of snow. Mostly cloudy, with a high near 40. Breezy, with a west wind 15 to 20 mph, with gusts as high as 30 mph. Chance of precipitation is 40%.
Friday Night
A 20 percent chance of snow before midnight. Mostly cloudy, with a low around 24.
Saturday
Mostly sunny, with a high near 37.
Saturday Night
A 20 percent chance of snow. Mostly cloudy, with a low around 21.
Sunday
Mostly sunny, with a high near 32.
Sunday Night
Partly cloudy, with a low around 14.
Monday
Mostly sunny, with a high near 32.
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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:
11:15 pm CST Feb 16, 2026
Forecast Valid:
11pm CST Feb 16, 2026-6pm CST Feb 23, 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