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.

Mostly Cloudy

48°F

9°C

Humidity 94%
Wind Speed SW 15 mph
Barometer 29.88 in
Dewpoint 46°F (8°C)
Visibility 10.00 mi
Wind Chill42°F (6°C)
Last update 30 Mar 10:45 am CDT
Extended Forecast for

2 Miles W Darien WI

  • Today

    Today: Sunny, with a high near 78. Southwest wind 10 to 15 mph.

    High: 78 °F

    Sunny

  • Tonight

    Tonight: A slight chance of rain and thunderstorms before 1am, then a slight chance of rain and thunderstorms after 5am. Mostly cloudy, with a low around 61. South wind 10 to 15 mph, with gusts as high as 25 mph. Chance of precipitation is 20%.

    Low: 61 °F

    Slight Chance
    T-storms

  • Tuesday

    Tuesday: A chance of rain and thunderstorms before 1pm, then rain and possibly a thunderstorm between 1pm and 4pm, then a chance of rain and thunderstorms after 4pm. Temperature rising to near 70 by noon, then falling to around 55 during the remainder of the day. Southwest wind 10 to 15 mph becoming northwest in the afternoon. Winds could gust as high as 30 mph. Chance of precipitation is 80%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

    High: 70 °F⇓

    Chance Rain
    then Rain

  • Tuesday Night

    Tuesday Night: A chance of rain and thunderstorms before 10pm, then a chance of rain between 10pm and 1am. Mostly cloudy, with a low around 33. North wind 10 to 15 mph, with gusts as high as 25 mph. Chance of precipitation is 40%.

    Low: 33 °F

    Chance Rain

  • Wednesday

    Wednesday: A chance of rain after 1pm, mixing with snow after 4pm. Mostly cloudy, with a high near 42. Northeast wind 10 to 15 mph, with gusts as high as 25 mph. Chance of precipitation is 40%.

    High: 42 °F

    Mostly Cloudy
    then Chance
    Rain/Snow

  • Wednesday Night

    Wednesday Night: Rain, possibly mixed with snow, becoming all rain after 4am. Low around 32. Breezy, with a northeast wind 15 to 20 mph, with gusts as high as 30 mph. Chance of precipitation is 90%. New snow accumulation of less than a half inch possible.

    Low: 32 °F

    Rain/Snow and
    Breezy

  • Thursday

    Thursday: Rain. High near 51. East wind around 15 mph, with gusts as high as 30 mph. Chance of precipitation is 90%. New precipitation amounts between three quarters and one inch possible.

    High: 51 °F

    Rain

  • Thursday Night

    Thursday Night: Rain likely, mainly before 1am. Cloudy, with a low around 38. East wind 10 to 15 mph becoming west in the evening. Chance of precipitation is 70%. New precipitation amounts between a tenth and quarter of an inch possible.

    Low: 38 °F

    Rain Likely

  • Friday

    Friday: A 20 percent chance of rain after 1pm. Mostly cloudy, with a high near 55.

    High: 55 °F

    Mostly Cloudy
    then Slight
    Chance Rain

Detailed Forecast

Today
Sunny, with a high near 78. Southwest wind 10 to 15 mph.
Tonight
A slight chance of rain and thunderstorms before 1am, then a slight chance of rain and thunderstorms after 5am. Mostly cloudy, with a low around 61. South wind 10 to 15 mph, with gusts as high as 25 mph. Chance of precipitation is 20%.
Tuesday
A chance of rain and thunderstorms before 1pm, then rain and possibly a thunderstorm between 1pm and 4pm, then a chance of rain and thunderstorms after 4pm. Temperature rising to near 70 by noon, then falling to around 55 during the remainder of the day. Southwest wind 10 to 15 mph becoming northwest in the afternoon. Winds could gust as high as 30 mph. Chance of precipitation is 80%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Tuesday Night
A chance of rain and thunderstorms before 10pm, then a chance of rain between 10pm and 1am. Mostly cloudy, with a low around 33. North wind 10 to 15 mph, with gusts as high as 25 mph. Chance of precipitation is 40%.
Wednesday
A chance of rain after 1pm, mixing with snow after 4pm. Mostly cloudy, with a high near 42. Northeast wind 10 to 15 mph, with gusts as high as 25 mph. Chance of precipitation is 40%.
Wednesday Night
Rain, possibly mixed with snow, becoming all rain after 4am. Low around 32. Breezy, with a northeast wind 15 to 20 mph, with gusts as high as 30 mph. Chance of precipitation is 90%. New snow accumulation of less than a half inch possible.
Thursday
Rain. High near 51. East wind around 15 mph, with gusts as high as 30 mph. Chance of precipitation is 90%. New precipitation amounts between three quarters and one inch possible.
Thursday Night
Rain likely, mainly before 1am. Cloudy, with a low around 38. East wind 10 to 15 mph becoming west in the evening. Chance of precipitation is 70%. New precipitation amounts between a tenth and quarter of an inch possible.
Friday
A 20 percent chance of rain after 1pm. Mostly cloudy, with a high near 55.
Friday Night
Rain likely, mainly after 1am. Mostly cloudy, with a low around 38. Chance of precipitation is 60%.
Saturday
Rain likely. Cloudy, with a high near 57. Chance of precipitation is 60%.
Saturday Night
A 40 percent chance of rain. Mostly cloudy, with a low around 33.
Sunday
Mostly cloudy, with a high near 47. Breezy.
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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:
10:33 am CDT Mar 30, 2026
Forecast Valid:
11am CDT Mar 30, 2026-6pm CDT Apr 5, 2026
 
Forecast Discussion
 
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Additional Resources

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High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation