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

19°F

-7°C

Humidity 79%
Wind Speed E 3 mph
Barometer 30.40 in
Dewpoint 14°F (-10°C)
Visibility 10.00 mi
Last update 2 Mar 4:35 am CST
Extended Forecast for

2 Miles W Darien WI

  • Today

    Today: Sunny, with a high near 45. South wind 5 to 10 mph.

    High: 45 °F

    Sunny

  • Tonight

    Tonight: A slight chance of snow and freezing rain before 2am, then a chance of rain between 2am and 5am, then a chance of freezing rain after 5am. Increasing clouds, with a low around 29. Southeast wind around 5 mph becoming calm in the evening. Chance of precipitation is 30%.

    Low: 29 °F

    Mostly Cloudy
    then Chance
    Wintry Mix

  • Tuesday

    Tuesday: A chance of freezing rain before 8am, then a chance of rain. Mostly cloudy, with a high near 44. Calm wind becoming east around 5 mph. Chance of precipitation is 40%.

    High: 44 °F

    Chance
    Rain/Freezing
    Rain then
    Slight Chance
    Rain

  • Tuesday Night

    Tuesday Night: A slight chance of rain before 3am, then a slight chance of snow. Partly cloudy, with a low around 30. Calm wind becoming northeast around 5 mph after midnight. Chance of precipitation is 20%.

    Low: 30 °F

    Slight Chance
    Rain then
    Slight Chance
    Rain/Snow

  • Wednesday

    Wednesday: A chance of rain, with thunderstorms also possible after 3pm. Partly sunny, with a high near 48. East wind 5 to 10 mph. Chance of precipitation is 50%.

    High: 48 °F

    Chance Rain

  • Wednesday Night

    Wednesday Night: A chance of rain and thunderstorms, then rain likely and possibly a thunderstorm after midnight. Mostly cloudy, with a low around 38. East wind around 5 mph. Chance of precipitation is 70%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

    Low: 38 °F

    Chance
    T-storms then
    Rain Likely

  • Thursday

    Thursday: Rain likely, mainly before noon. Cloudy, with a high near 52. East wind 5 to 10 mph becoming northwest in the afternoon. Chance of precipitation is 60%. New precipitation amounts between a tenth and quarter of an inch possible.

    High: 52 °F

    Rain Likely

  • Thursday Night

    Thursday Night: A 30 percent chance of rain after midnight. Mostly cloudy, with a low around 38. North wind around 5 mph becoming southeast after midnight.

    Low: 38 °F

    Mostly Cloudy
    then Chance
    Rain

  • Friday

    Friday: Rain likely, then rain and possibly a thunderstorm after noon. High near 62. Chance of precipitation is 80%.

    High: 62 °F

    Rain

Detailed Forecast

Today
Sunny, with a high near 45. South wind 5 to 10 mph.
Tonight
A slight chance of snow and freezing rain before 2am, then a chance of rain between 2am and 5am, then a chance of freezing rain after 5am. Increasing clouds, with a low around 29. Southeast wind around 5 mph becoming calm in the evening. Chance of precipitation is 30%.
Tuesday
A chance of freezing rain before 8am, then a chance of rain. Mostly cloudy, with a high near 44. Calm wind becoming east around 5 mph. Chance of precipitation is 40%.
Tuesday Night
A slight chance of rain before 3am, then a slight chance of snow. Partly cloudy, with a low around 30. Calm wind becoming northeast around 5 mph after midnight. Chance of precipitation is 20%.
Wednesday
A chance of rain, with thunderstorms also possible after 3pm. Partly sunny, with a high near 48. East wind 5 to 10 mph. Chance of precipitation is 50%.
Wednesday Night
A chance of rain and thunderstorms, then rain likely and possibly a thunderstorm after midnight. Mostly cloudy, with a low around 38. East wind around 5 mph. Chance of precipitation is 70%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Thursday
Rain likely, mainly before noon. Cloudy, with a high near 52. East wind 5 to 10 mph becoming northwest in the afternoon. Chance of precipitation is 60%. New precipitation amounts between a tenth and quarter of an inch possible.
Thursday Night
A 30 percent chance of rain after midnight. Mostly cloudy, with a low around 38. North wind around 5 mph becoming southeast after midnight.
Friday
Rain likely, then rain and possibly a thunderstorm after noon. High near 62. Chance of precipitation is 80%.
Friday Night
Rain likely and possibly a thunderstorm. Mostly cloudy, with a low around 44. Chance of precipitation is 70%.
Saturday
A 30 percent chance of rain. Mostly cloudy, with a high near 57.
Saturday Night
Mostly clear, with a low around 36.
Sunday
Sunny, with a high near 61.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
2 Miles W Darien WI
 42.59°N 88.75°W (Elev. 889 ft)
Last Update:
3:34 am CST Mar 2, 2026
Forecast Valid:
4am CST Mar 2, 2026-6pm CDT Mar 8, 2026
 
Forecast Discussion
 
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Additional Resources

Radar & Satellite Image

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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