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.

Mostly Cloudy

55°F

13°C

Humidity 33%
Wind Speed W 13 G 22 mph
Barometer 29.78 in
Dewpoint 27°F (-3°C)
Visibility 10.00 mi
Wind Chill51°F (11°C)
Last update 5 May 4:45 pm CDT
Extended Forecast for

Clinton WISimilar City Names

Frost Advisory May 6, 01:00am until May 6, 08:00am
Click here for hazard details and duration
Frost Advisory

  • Tonight

    Tonight: Mostly cloudy, with a low around 35. Northwest wind 5 to 15 mph.

    Low: 35 °F

    Mostly Cloudy

  • Wednesday

    Wednesday: Partly sunny, with a high near 56. Northwest wind 5 to 15 mph.

    High: 56 °F

    Partly Sunny

  • Wednesday Night

    Wednesday Night: Widespread frost, mainly between 3am and 5am. Otherwise, partly cloudy, with a low around 34. Northwest wind 5 to 10 mph becoming light west in the evening.

    Low: 34 °F

    Partly Cloudy
    then Frost

  • Thursday

    Thursday: A 20 percent chance of showers after 1pm. Areas of frost before 7am. Otherwise, mostly sunny, with a high near 60. West wind 5 to 15 mph.

    High: 60 °F

    Areas Frost
    then Slight
    Chance
    Showers

  • Thursday Night

    Thursday Night: Partly cloudy, with a low around 42. South wind 5 to 10 mph.

    Low: 42 °F

    Partly Cloudy

  • Friday

    Friday: A 40 percent chance of showers, mainly after 1pm. Mostly cloudy, with a high near 63. Southwest wind 10 to 15 mph.

    High: 63 °F

    Chance
    Showers

  • Friday Night

    Friday Night: Partly cloudy, with a low around 43. Southwest wind around 5 mph.

    Low: 43 °F

    Partly Cloudy

  • Saturday

    Saturday: Sunny, with a high near 70. Breezy, with a southwest wind 10 to 20 mph, with gusts as high as 25 mph.

    High: 70 °F

    Sunny then
    Mostly Sunny
    and Breezy

  • Saturday Night

    Saturday Night: A 40 percent chance of showers. Mostly cloudy, with a low around 46.

    Low: 46 °F

    Chance
    Showers

Detailed Forecast

Tonight
Mostly cloudy, with a low around 35. Northwest wind 5 to 15 mph.
Wednesday
Partly sunny, with a high near 56. Northwest wind 5 to 15 mph.
Wednesday Night
Widespread frost, mainly between 3am and 5am. Otherwise, partly cloudy, with a low around 34. Northwest wind 5 to 10 mph becoming light west in the evening.
Thursday
A 20 percent chance of showers after 1pm. Areas of frost before 7am. Otherwise, mostly sunny, with a high near 60. West wind 5 to 15 mph.
Thursday Night
Partly cloudy, with a low around 42. South wind 5 to 10 mph.
Friday
A 40 percent chance of showers, mainly after 1pm. Mostly cloudy, with a high near 63. Southwest wind 10 to 15 mph.
Friday Night
Partly cloudy, with a low around 43. Southwest wind around 5 mph.
Saturday
Sunny, with a high near 70. Breezy, with a southwest wind 10 to 20 mph, with gusts as high as 25 mph.
Saturday Night
A 40 percent chance of showers. Mostly cloudy, with a low around 46.
Sunday
A 30 percent chance of showers before 1pm. Partly sunny, with a high near 62.
Sunday Night
Partly cloudy, with a low around 40.
Monday
Mostly sunny, with a high near 63.
Monday Night
A 20 percent chance of showers. Partly cloudy, with a low around 43.
Tuesday
A 20 percent chance of showers. Mostly sunny, with a high near 69.
Basemap Options
Click map to change the forecast location
Loading map...
Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Clinton WISimilar City Names
 42.55°N 88.87°W (Elev. 938 ft)
Last Update:
2:37 pm CDT May 5, 2026
Forecast Valid:
4pm CDT May 5, 2026-6pm CDT May 12, 2026
 
Forecast Discussion
 
Get as KML Get as XML

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