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.

Fog/Mist

73°F

23°C

Humidity 94%
Wind Speed Calm
Barometer 30.11 in
Dewpoint 72°F (22°C)
Visibility 6.00 mi
Last update 30 Jul 5:45 am CDT
Extended Forecast for

Janesville WI

  • Overnight

    Overnight: Showers and possibly a thunderstorm. Low around 71. Northeast wind around 5 mph. Chance of precipitation is 100%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

    Low: 71 °F

    Showers

  • Wednesday

    Wednesday: Showers and possibly a thunderstorm. High near 75. Northeast wind 5 to 10 mph. Chance of precipitation is 100%. New rainfall amounts between three quarters and one inch possible.

    High: 75 °F

    Showers then
    T-storms

  • Wednesday Night

    Wednesday Night: Showers and possibly a thunderstorm before 10pm, then a chance of showers and thunderstorms between 10pm and 4am, then a chance of showers after 4am. Low around 60. Northeast wind 10 to 15 mph. Chance of precipitation is 90%. New rainfall amounts between a half and three quarters of an inch possible.

    Low: 60 °F

    Showers then
    Chance
    T-storms

  • Thursday

    Thursday: A 10 percent chance of showers before 7am. Patchy smoke after 1pm. Sunny, with a high near 74. Northeast wind around 10 mph.

    High: 74 °F

    Slight Chance
    Showers then
    Patchy Smoke

  • Thursday Night

    Thursday Night: Mostly clear, with a low around 55. Northeast wind 5 to 10 mph.

    Low: 55 °F

    Mostly Clear

  • Friday

    Friday: Sunny, with a high near 75. Northeast wind 5 to 10 mph.

    High: 75 °F

    Sunny

  • Friday Night

    Friday Night: Mostly clear, with a low around 51. Northeast wind around 5 mph becoming calm in the evening.

    Low: 51 °F

    Mostly Clear

  • Saturday

    Saturday: Sunny, with a high near 78. Calm wind becoming east around 5 mph in the afternoon.

    High: 78 °F

    Sunny

  • Saturday Night

    Saturday Night: Mostly clear, with a low around 55.

    Low: 55 °F

    Mostly Clear

Detailed Forecast

Overnight
Showers and possibly a thunderstorm. Low around 71. Northeast wind around 5 mph. Chance of precipitation is 100%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Wednesday
Showers and possibly a thunderstorm. High near 75. Northeast wind 5 to 10 mph. Chance of precipitation is 100%. New rainfall amounts between three quarters and one inch possible.
Wednesday Night
Showers and possibly a thunderstorm before 10pm, then a chance of showers and thunderstorms between 10pm and 4am, then a chance of showers after 4am. Low around 60. Northeast wind 10 to 15 mph. Chance of precipitation is 90%. New rainfall amounts between a half and three quarters of an inch possible.
Thursday
A 10 percent chance of showers before 7am. Patchy smoke after 1pm. Sunny, with a high near 74. Northeast wind around 10 mph.
Thursday Night
Mostly clear, with a low around 55. Northeast wind 5 to 10 mph.
Friday
Sunny, with a high near 75. Northeast wind 5 to 10 mph.
Friday Night
Mostly clear, with a low around 51. Northeast wind around 5 mph becoming calm in the evening.
Saturday
Sunny, with a high near 78. Calm wind becoming east around 5 mph in the afternoon.
Saturday Night
Mostly clear, with a low around 55.
Sunday
Mostly sunny, with a high near 78.
Sunday Night
Partly cloudy, with a low around 58.
Monday
A 20 percent chance of showers. Partly sunny, with a high near 77.
Monday Night
A 20 percent chance of showers and thunderstorms. Partly cloudy, with a low around 61.
Tuesday
A 20 percent chance of showers and thunderstorms. Mostly sunny, with a high near 80.
Basemap Options
Click map to change the forecast location
Loading map...
Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Janesville WI
 42.69°N 89.01°W (Elev. 863 ft)
Last Update:
4:20 am CDT Jul 30, 2025
Forecast Valid:
5am CDT Jul 30, 2025-6pm CDT Aug 5, 2025
 
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