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

36°F

2°C

Humidity 75%
Wind Speed E 3 mph
Barometer 30.15 in
Dewpoint 28°F (-2°C)
Visibility 10.00 mi
Last update 25 Mar 1:30 am CDT
Extended Forecast for

2 Miles WSW Darien WI

  • Overnight

    Overnight: Mostly cloudy, with a low around 35. Southeast wind around 5 mph.

    Low: 35 °F

    Mostly Cloudy

  • Wednesday

    Wednesday: Partly sunny, with a high near 67. Southwest wind 10 to 15 mph, with gusts as high as 30 mph.

    High: 67 °F

    Partly Sunny

  • Wednesday Night

    Wednesday Night: Partly cloudy, with a low around 50. Southwest wind 5 to 10 mph.

    Low: 50 °F

    Partly Cloudy

  • Thursday

    Thursday: A 50 percent chance of rain after 1pm. Increasing clouds, with a high near 66. South wind 5 to 10 mph becoming north 10 to 15 mph in the afternoon.

    High: 66 °F

    Partly Sunny
    then Chance
    Rain

  • Thursday Night

    Thursday Night: A slight chance of rain, mixing with snow after 10pm, then gradually ending. Mostly cloudy, with a low around 25. North wind 10 to 15 mph, with gusts as high as 25 mph. Chance of precipitation is 20%.

    Low: 25 °F

    Slight Chance
    Rain/Snow

  • Friday

    Friday: Mostly sunny, with a high near 43. North wind around 10 mph.

    High: 43 °F

    Mostly Sunny

  • Friday Night

    Friday Night: Mostly clear, with a low around 24. Northwest wind 5 to 10 mph.

    Low: 24 °F

    Mostly Clear

  • Saturday

    Saturday: Increasing clouds, with a high near 50. West wind 5 to 10 mph increasing to 10 to 15 mph in the afternoon.

    High: 50 °F

    Increasing
    Clouds

  • Saturday Night

    Saturday Night: Partly cloudy, with a low around 34.

    Low: 34 °F

    Partly Cloudy

Detailed Forecast

Overnight
Mostly cloudy, with a low around 35. Southeast wind around 5 mph.
Wednesday
Partly sunny, with a high near 67. Southwest wind 10 to 15 mph, with gusts as high as 30 mph.
Wednesday Night
Partly cloudy, with a low around 50. Southwest wind 5 to 10 mph.
Thursday
A 50 percent chance of rain after 1pm. Increasing clouds, with a high near 66. South wind 5 to 10 mph becoming north 10 to 15 mph in the afternoon.
Thursday Night
A slight chance of rain, mixing with snow after 10pm, then gradually ending. Mostly cloudy, with a low around 25. North wind 10 to 15 mph, with gusts as high as 25 mph. Chance of precipitation is 20%.
Friday
Mostly sunny, with a high near 43. North wind around 10 mph.
Friday Night
Mostly clear, with a low around 24. Northwest wind 5 to 10 mph.
Saturday
Increasing clouds, with a high near 50. West wind 5 to 10 mph increasing to 10 to 15 mph in the afternoon.
Saturday Night
Partly cloudy, with a low around 34.
Sunday
Partly sunny, with a high near 59.
Sunday Night
Partly cloudy, with a low around 44.
Monday
A 20 percent chance of rain. Mostly sunny, with a high near 71.
Monday Night
A 40 percent chance of rain and thunderstorms. Mostly cloudy, with a low around 47.
Tuesday
A 40 percent chance of rain. Mostly cloudy, with a high near 67.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
2 Miles WSW Darien WI
 42.59°N 88.75°W (Elev. 889 ft)
Last Update:
1:35 am CDT Mar 25, 2026
Forecast Valid:
2am CDT Mar 25, 2026-6pm CDT Mar 31, 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