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.

Partly Cloudy

64°F

18°C

Humidity 52%
Wind Speed N 12 mph
Barometer 29.84 in
Dewpoint 46°F (8°C)
Visibility 10.00 mi
Last update 20 Mar 3:45 pm CDT
Extended Forecast for

2 Miles W Darien WI

  • Tonight

    Tonight: Mostly cloudy, with a low around 38. North wind 5 to 10 mph becoming east after midnight.

    Low: 38 °F

    Mostly Cloudy

  • Saturday

    Saturday: Mostly cloudy, then gradually becoming sunny, with a high near 67. Southeast wind 5 to 15 mph becoming southwest in the afternoon.

    High: 67 °F

    Decreasing
    Clouds

  • Saturday Night

    Saturday Night: Increasing clouds, with a low around 48. Southwest wind 5 to 10 mph becoming northwest after midnight.

    Low: 48 °F

    Increasing
    Clouds

  • Sunday

    Sunday: A 20 percent chance of rain. Cloudy, with a high near 49. Northeast wind 10 to 15 mph, with gusts as high as 25 mph.

    High: 49 °F

    Slight Chance
    Rain

  • Sunday Night

    Sunday Night: Mostly cloudy, with a low around 27. North wind 5 to 15 mph.

    Low: 27 °F

    Mostly Cloudy

  • Monday

    Monday: Mostly sunny, with a high near 46. North wind 5 to 10 mph.

    High: 46 °F

    Mostly Sunny

  • Monday Night

    Monday Night: Increasing clouds, with a low around 30. East wind around 5 mph becoming south after midnight.

    Low: 30 °F

    Increasing
    Clouds

  • Tuesday

    Tuesday: Mostly cloudy, with a high near 54. South wind 10 to 15 mph becoming west in the afternoon.

    High: 54 °F

    Mostly Cloudy

  • Tuesday Night

    Tuesday Night: Partly cloudy, with a low around 32.

    Low: 32 °F

    Partly Cloudy

Detailed Forecast

Tonight
Mostly cloudy, with a low around 38. North wind 5 to 10 mph becoming east after midnight.
Saturday
Mostly cloudy, then gradually becoming sunny, with a high near 67. Southeast wind 5 to 15 mph becoming southwest in the afternoon.
Saturday Night
Increasing clouds, with a low around 48. Southwest wind 5 to 10 mph becoming northwest after midnight.
Sunday
A 20 percent chance of rain. Cloudy, with a high near 49. Northeast wind 10 to 15 mph, with gusts as high as 25 mph.
Sunday Night
Mostly cloudy, with a low around 27. North wind 5 to 15 mph.
Monday
Mostly sunny, with a high near 46. North wind 5 to 10 mph.
Monday Night
Increasing clouds, with a low around 30. East wind around 5 mph becoming south after midnight.
Tuesday
Mostly cloudy, with a high near 54. South wind 10 to 15 mph becoming west in the afternoon.
Tuesday Night
Partly cloudy, with a low around 32.
Wednesday
Partly sunny, with a high near 50.
Wednesday Night
A 20 percent chance of rain. Mostly cloudy, with a low around 38.
Thursday
A 30 percent chance of rain. Mostly cloudy, with a high near 62.
Thursday Night
A slight chance of rain and snow. Mostly cloudy, with a low around 26. Chance of precipitation is 20%.
Friday
Partly sunny, with a high near 42.
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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:
3:33 pm CDT Mar 20, 2026
Forecast Valid:
4pm CDT Mar 20, 2026-6pm CDT Mar 27, 2026
 
Forecast Discussion
 
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Additional Resources

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Hourly Weather Forecast

National Digital Forecast Database

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High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation