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Hazardous Weather Conditions

Current conditions at

Janesville-Rock County (KJVL)

Lat: 42.62°NLon: 89.04°WElev: 801ft.

Fog

52°F

11°C

Humidity 100%
Wind Speed SE 8 mph
Barometer 29.90 in
Dewpoint 52°F (11°C)
Visibility 0.25 mi
Wind Chill49°F (9°C)
Last update 17 Apr 2:35 am CDT
Extended Forecast for

2 Miles W Darien WI

Flood Watch April 17, 01:00pm until April 18, 07:00am
Dense Fog Advisory April 17, 02:47am until April 17, 09:00am
Click here for hazard details and duration
Flood Watch
Dense Fog Advisory
  •  
    Dense Fog Advisory April 17, 02:47am until April 17, 09:00am

    NOW until 9:00am Fri

    Dense Fog Advisory

  • Overnight

    Low: 52 °F

    Mostly Cloudy

  • Friday

    Friday: A 30 percent chance of showers and thunderstorms, mainly after 5pm. Mostly sunny, with a high near 80. Breezy, with a south wind 10 to 15 mph increasing to 15 to 20 mph in the afternoon. Winds could gust as high as 35 mph.

    High: 80 °F

    Mostly Sunny
    then Chance
    T-storms and
    Breezy

  • Friday Night

    Friday Night: Showers and thunderstorms, mainly before 1am. Some of the storms could be severe. Low around 39. Breezy, with a south wind 15 to 20 mph becoming northwest after midnight. Winds could gust as high as 30 mph. Chance of precipitation is 80%. New rainfall amounts between a half and three quarters of an inch possible.

    Low: 39 °F

    Severe
    Thunderstorms
    and Breezy
    then Chance
    T-storms

  • Saturday

    Saturday: Mostly cloudy, then gradually becoming sunny, with a high near 48. Breezy, with a west wind 15 to 20 mph, with gusts as high as 30 mph.

    High: 48 °F

    Decreasing
    Clouds and
    Breezy

  • Saturday Night

    Saturday Night: Mostly clear, with a low around 30. West wind 5 to 15 mph, with gusts as high as 25 mph.

    Low: 30 °F

    Mostly Clear

  • Sunday

    Sunday: Mostly sunny, with a high near 48. Northwest wind 5 to 15 mph.

    High: 48 °F

    Mostly Sunny

  • Sunday Night

    Sunday Night: Mostly clear, with a low around 29. Northwest wind 5 to 10 mph becoming light and variable in the evening.

    Low: 29 °F

    Mostly Clear

  • Monday

    Monday: Sunny, with a high near 56. Light and variable wind becoming south 5 to 10 mph in the morning.

    High: 56 °F

    Sunny

Detailed Forecast

Overnight
Mostly cloudy, with a low around 52. Southeast wind around 5 mph.
Friday
A 30 percent chance of showers and thunderstorms, mainly after 5pm. Mostly sunny, with a high near 80. Breezy, with a south wind 10 to 15 mph increasing to 15 to 20 mph in the afternoon. Winds could gust as high as 35 mph.
Friday Night
Showers and thunderstorms, mainly before 1am. Some of the storms could be severe. Low around 39. Breezy, with a south wind 15 to 20 mph becoming northwest after midnight. Winds could gust as high as 30 mph. Chance of precipitation is 80%. New rainfall amounts between a half and three quarters of an inch possible.
Saturday
Mostly cloudy, then gradually becoming sunny, with a high near 48. Breezy, with a west wind 15 to 20 mph, with gusts as high as 30 mph.
Saturday Night
Mostly clear, with a low around 30. West wind 5 to 15 mph, with gusts as high as 25 mph.
Sunday
Mostly sunny, with a high near 48. Northwest wind 5 to 15 mph.
Sunday Night
Mostly clear, with a low around 29. Northwest wind 5 to 10 mph becoming light and variable in the evening.
Monday
Sunny, with a high near 56. Light and variable wind becoming south 5 to 10 mph in the morning.
Monday Night
Partly cloudy, with a low around 42.
Tuesday
Mostly sunny, with a high near 71.
Tuesday Night
Partly cloudy, with a low around 47.
Wednesday
Sunny, with a high near 72.
Wednesday Night
Partly cloudy, with a low around 49.
Thursday
A 20 percent chance of showers. Mostly sunny, with a high near 76.
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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:
2:36 am CDT Apr 17, 2026
Forecast Valid:
2am CDT Apr 17, 2026-6pm CDT Apr 23, 2026
 
Forecast Discussion
 
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Additional Resources

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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