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.

Partly Cloudy

70°F

21°C

Humidity 94%
Wind Speed Calm
Barometer 29.86 in
Dewpoint 68°F (20°C)
Visibility 10.00 mi
Last update 12 Aug 12:15 am CDT
Extended Forecast for

4 Miles S Clinton WI

  • Overnight

    Overnight: A 20 percent chance of showers and thunderstorms. Patchy fog after 3am. Otherwise, mostly cloudy, with a low around 66. Calm wind.

    Low: 66 °F

    Slight Chance
    T-storms and
    Patchy Fog

  • Wednesday

    Wednesday: A slight chance of showers and thunderstorms between 10am and 3pm. Patchy fog before 8am. Otherwise, mostly cloudy, with a high near 82. Calm wind becoming south around 5 mph in the afternoon. Chance of precipitation is 20%.

    High: 82 °F

    Slight Chance
    T-storms and
    Patchy Fog

  • Wednesday Night

    Wednesday Night: Partly cloudy, with a low around 65. Southeast wind around 5 mph becoming calm.

    Low: 65 °F

    Partly Cloudy

  • Thursday

    Thursday: Showers likely before 1pm, then showers likely and possibly a thunderstorm between 1pm and 4pm, then a chance of showers and thunderstorms after 4pm. Mostly cloudy, with a high near 78. Calm wind becoming southeast around 5 mph in the morning. Chance of precipitation is 70%. New rainfall amounts between a half and three quarters of an inch possible.

    High: 78 °F

    Showers
    Likely

  • Thursday Night

    Thursday Night: A chance of showers and thunderstorms before 7pm, then a slight chance of showers. Mostly cloudy, with a low around 64. East wind around 5 mph. Chance of precipitation is 30%.

    Low: 64 °F

    Chance
    Showers

  • Friday

    Friday: A 20 percent chance of showers before 1pm. Partly sunny, with a high near 79. East wind around 10 mph.

    High: 79 °F

    Slight Chance
    Showers

  • Friday Night

    Friday Night: A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 1am. Mostly cloudy, with a low around 62. East wind around 10 mph. Chance of precipitation is 60%. New rainfall amounts between a half and three quarters of an inch possible.

    Low: 62 °F

    Chance
    Showers then
    Showers
    Likely

  • Saturday

    Saturday: Showers likely and possibly a thunderstorm before 1pm, then a chance of showers and thunderstorms after 1pm. Mostly cloudy, with a high near 80. Southeast wind 10 to 15 mph. Chance of precipitation is 70%. New rainfall amounts between a quarter and half of an inch possible.

    High: 80 °F

    Showers
    Likely

  • Saturday Night

    Saturday Night: A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 1am. Mostly cloudy, with a low around 67. Chance of precipitation is 60%.

    Low: 67 °F

    Chance
    T-storms then
    Showers
    Likely

Detailed Forecast

Overnight
A 20 percent chance of showers and thunderstorms. Patchy fog after 3am. Otherwise, mostly cloudy, with a low around 66. Calm wind.
Wednesday
A slight chance of showers and thunderstorms between 10am and 3pm. Patchy fog before 8am. Otherwise, mostly cloudy, with a high near 82. Calm wind becoming south around 5 mph in the afternoon. Chance of precipitation is 20%.
Wednesday Night
Partly cloudy, with a low around 65. Southeast wind around 5 mph becoming calm.
Thursday
Showers likely before 1pm, then showers likely and possibly a thunderstorm between 1pm and 4pm, then a chance of showers and thunderstorms after 4pm. Mostly cloudy, with a high near 78. Calm wind becoming southeast around 5 mph in the morning. Chance of precipitation is 70%. New rainfall amounts between a half and three quarters of an inch possible.
Thursday Night
A chance of showers and thunderstorms before 7pm, then a slight chance of showers. Mostly cloudy, with a low around 64. East wind around 5 mph. Chance of precipitation is 30%.
Friday
A 20 percent chance of showers before 1pm. Partly sunny, with a high near 79. East wind around 10 mph.
Friday Night
A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 1am. Mostly cloudy, with a low around 62. East wind around 10 mph. Chance of precipitation is 60%. New rainfall amounts between a half and three quarters of an inch possible.
Saturday
Showers likely and possibly a thunderstorm before 1pm, then a chance of showers and thunderstorms after 1pm. Mostly cloudy, with a high near 80. Southeast wind 10 to 15 mph. Chance of precipitation is 70%. New rainfall amounts between a quarter and half of an inch possible.
Saturday Night
A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 1am. Mostly cloudy, with a low around 67. Chance of precipitation is 60%.
Sunday
A 30 percent chance of showers and thunderstorms, mainly before 1pm. Partly sunny, with a high near 81.
Sunday Night
Partly cloudy, with a low around 61.
Monday
Mostly sunny, with a high near 77.
Monday Night
Partly cloudy, with a low around 58.
Tuesday
Mostly sunny, with a high near 79.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
4 Miles S Clinton WI
 42.49°N 88.87°W (Elev. 958 ft)
Last Update:
12:17 am CDT Aug 12, 2026
Forecast Valid:
12am CDT Aug 12, 2026-6pm CDT Aug 18, 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