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.

Fair

48°F

9°C

Humidity 50%
Wind Speed W 10 mph
Barometer 30.13 in
Dewpoint 30°F (-1°C)
Visibility 10.00 mi
Wind Chill44°F (7°C)
Last update 5 Apr 7:45 pm CDT
Extended Forecast for

Darien WI

  • Tonight

    Tonight: Showers likely, mainly before midnight. Partly cloudy during the early evening, then becoming cloudy, with a low around 35. Southwest wind 5 to 10 mph becoming northwest after midnight. Chance of precipitation is 60%. New precipitation amounts of less than a tenth of an inch possible.

    Low: 35 °F

    Showers
    Likely then
    Isolated
    Showers

  • Monday

    Monday: Mostly cloudy, with a high near 45. Breezy, with a northwest wind 10 to 20 mph, with gusts as high as 25 mph.

    High: 45 °F

    Mostly Cloudy
    then Partly
    Sunny and
    Breezy

  • Monday Night

    Monday Night: Partly cloudy, with a low around 21. Northwest wind 5 to 15 mph.

    Low: 21 °F

    Partly Cloudy

  • Tuesday

    Tuesday: Mostly sunny, with a high near 42. Northeast wind around 5 mph becoming southeast in the afternoon.

    High: 42 °F

    Mostly Sunny

  • Tuesday Night

    Tuesday Night: A chance of snow showers before 4am, then a chance of rain showers. Mostly cloudy, with a low around 29. Southeast wind 5 to 10 mph. Chance of precipitation is 30%.

    Low: 29 °F

    Slight Chance
    Snow Showers
    then Chance
    Rain/Snow

  • Wednesday

    Wednesday: A 30 percent chance of showers before 7am. Mostly cloudy, with a high near 62. Breezy, with a south wind 15 to 20 mph, with gusts as high as 30 mph.

    High: 62 °F

    Breezy.
    Chance
    Showers then
    Partly Sunny

  • Wednesday Night

    Wednesday Night: Showers likely. Mostly cloudy, with a low around 50. Breezy, with a southwest wind 15 to 20 mph, with gusts as high as 30 mph. Chance of precipitation is 70%. New precipitation amounts between a tenth and quarter of an inch possible.

    Low: 50 °F

    Showers
    Likely and
    Breezy

  • Thursday

    Thursday: A 40 percent chance of showers. Partly sunny, with a high near 64. Southwest wind around 15 mph.

    High: 64 °F

    Chance
    Showers

  • Thursday Night

    Thursday Night: A 50 percent chance of showers. Mostly cloudy, with a low around 40.

    Low: 40 °F

    Chance
    Showers

Detailed Forecast

Tonight
Showers likely, mainly before midnight. Partly cloudy during the early evening, then becoming cloudy, with a low around 35. Southwest wind 5 to 10 mph becoming northwest after midnight. Chance of precipitation is 60%. New precipitation amounts of less than a tenth of an inch possible.
Monday
Mostly cloudy, with a high near 45. Breezy, with a northwest wind 10 to 20 mph, with gusts as high as 25 mph.
Monday Night
Partly cloudy, with a low around 21. Northwest wind 5 to 15 mph.
Tuesday
Mostly sunny, with a high near 42. Northeast wind around 5 mph becoming southeast in the afternoon.
Tuesday Night
A chance of snow showers before 4am, then a chance of rain showers. Mostly cloudy, with a low around 29. Southeast wind 5 to 10 mph. Chance of precipitation is 30%.
Wednesday
A 30 percent chance of showers before 7am. Mostly cloudy, with a high near 62. Breezy, with a south wind 15 to 20 mph, with gusts as high as 30 mph.
Wednesday Night
Showers likely. Mostly cloudy, with a low around 50. Breezy, with a southwest wind 15 to 20 mph, with gusts as high as 30 mph. Chance of precipitation is 70%. New precipitation amounts between a tenth and quarter of an inch possible.
Thursday
A 40 percent chance of showers. Partly sunny, with a high near 64. Southwest wind around 15 mph.
Thursday Night
A 50 percent chance of showers. Mostly cloudy, with a low around 40.
Friday
A 40 percent chance of showers. Partly sunny, with a high near 58.
Friday Night
A 40 percent chance of showers. Mostly cloudy, with a low around 38.
Saturday
A 40 percent chance of showers. Partly sunny, with a high near 60.
Saturday Night
A 50 percent chance of showers. Mostly cloudy, with a low around 47.
Sunday
Showers likely and possibly a thunderstorm. Mostly cloudy, with a high near 71. Chance of precipitation is 60%.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Darien WI
 42.59°N 88.72°W (Elev. 945 ft)
Last Update:
7:33 pm CDT Apr 5, 2026
Forecast Valid:
7pm CDT Apr 5, 2026-6pm CDT Apr 12, 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