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Hazardous Weather Conditions

Current conditions at

Janesville-Rock County (KJVL)

Lat: 42.62°NLon: 89.04°WElev: 801ft.

Fair

72°F

22°C

Humidity 94%
Wind Speed Calm
Barometer 29.93 in
Dewpoint 70°F (21°C)
Visibility 10.00 mi
Last update 16 Jul 12:10 am CDT
Extended Forecast for

Darien WI

  • Overnight

    Overnight: Partly cloudy, with a low around 69. South wind around 5 mph becoming calm.

    Low: 69 °F

    Partly Cloudy

  • Wednesday

    Wednesday: Showers and thunderstorms likely, mainly after 4pm. Mostly sunny, with a high near 86. Heat index values as high as 96. Southwest wind 5 to 10 mph increasing to 10 to 15 mph in the afternoon. Chance of precipitation is 70%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

    High: 86 °F

    Mostly Sunny
    then T-storms
    Likely

  • Wednesday Night

    Wednesday Night: Showers and thunderstorms likely before 10pm, then showers likely and possibly a thunderstorm between 10pm and 1am, then a chance of showers after 1am. Mostly cloudy, with a low around 62. Southwest wind around 5 mph becoming northwest after midnight. Chance of precipitation is 70%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

    Low: 62 °F

    T-storms
    Likely then
    Showers
    Likely

  • Thursday

    Thursday: A 20 percent chance of showers before 1pm. Mostly cloudy, with a high near 70. North wind around 10 mph.

    High: 70 °F

    Slight Chance
    Showers

  • Thursday Night

    Thursday Night: Mostly cloudy, then gradually becoming mostly clear, with a low around 52. Northeast wind around 5 mph.

    Low: 52 °F

    Decreasing
    Clouds

  • Friday

    Friday: Sunny, with a high near 75. Northeast wind around 5 mph becoming east in the afternoon.

    High: 75 °F

    Sunny

  • Friday Night

    Friday Night: A 30 percent chance of showers and thunderstorms after 1am. Partly cloudy, with a low around 59. East wind around 5 mph becoming calm in the evening.

    Low: 59 °F

    Partly Cloudy
    then Chance
    T-storms

  • Saturday

    Saturday: A 50 percent chance of showers and thunderstorms. Mostly cloudy, with a high near 79. Southeast wind 5 to 10 mph becoming southwest in the afternoon.

    High: 79 °F

    Chance
    T-storms

  • Saturday Night

    Saturday Night: A chance of showers and thunderstorms before 1am, then a slight chance of showers. Mostly cloudy, with a low around 63. Chance of precipitation is 40%.

    Low: 63 °F

    Chance
    T-storms

Detailed Forecast

Overnight
Partly cloudy, with a low around 69. South wind around 5 mph becoming calm.
Wednesday
Showers and thunderstorms likely, mainly after 4pm. Mostly sunny, with a high near 86. Heat index values as high as 96. Southwest wind 5 to 10 mph increasing to 10 to 15 mph in the afternoon. Chance of precipitation is 70%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Wednesday Night
Showers and thunderstorms likely before 10pm, then showers likely and possibly a thunderstorm between 10pm and 1am, then a chance of showers after 1am. Mostly cloudy, with a low around 62. Southwest wind around 5 mph becoming northwest after midnight. Chance of precipitation is 70%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Thursday
A 20 percent chance of showers before 1pm. Mostly cloudy, with a high near 70. North wind around 10 mph.
Thursday Night
Mostly cloudy, then gradually becoming mostly clear, with a low around 52. Northeast wind around 5 mph.
Friday
Sunny, with a high near 75. Northeast wind around 5 mph becoming east in the afternoon.
Friday Night
A 30 percent chance of showers and thunderstorms after 1am. Partly cloudy, with a low around 59. East wind around 5 mph becoming calm in the evening.
Saturday
A 50 percent chance of showers and thunderstorms. Mostly cloudy, with a high near 79. Southeast wind 5 to 10 mph becoming southwest in the afternoon.
Saturday Night
A chance of showers and thunderstorms before 1am, then a slight chance of showers. Mostly cloudy, with a low around 63. Chance of precipitation is 40%.
Sunday
A 20 percent chance of showers. Partly sunny, with a high near 79.
Sunday Night
A 30 percent chance of showers. Partly cloudy, with a low around 60.
Monday
A 30 percent chance of showers. Mostly sunny, with a high near 81.
Monday Night
A 30 percent chance of showers and thunderstorms. Partly cloudy, with a low around 65.
Tuesday
A 30 percent chance of showers and thunderstorms. Mostly sunny, with a high near 83.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Darien WI
 42.59°N 88.72°W (Elev. 945 ft)
Last Update:
11:24 pm CDT Jul 15, 2025
Forecast Valid:
12am CDT Jul 16, 2025-6pm CDT Jul 22, 2025
 
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