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.

Overcast

70°F

21°C

Humidity 83%
Wind Speed Calm
Barometer 30.06 in
Dewpoint 64°F (18°C)
Visibility 10.00 mi
Last update 18 Jul 11:10 pm CDT
Extended Forecast for

4 Miles WNW Beloit WI

  • Tonight

    Tonight: A 10 percent chance of showers and thunderstorms after 5am. Mostly cloudy, with a low around 65. Calm wind becoming southeast around 5 mph.

    Low: 65 °F

    Slight Chance
    T-storms

  • Saturday

    Saturday: A chance of showers and thunderstorms before 7am, then showers likely and possibly a thunderstorm between 7am and 11am, then a chance of showers and thunderstorms after 11am. Mostly cloudy, with a high near 83. South wind 5 to 10 mph becoming west in the afternoon. Chance of precipitation is 60%. New rainfall amounts between a quarter and half of an inch possible.

    High: 83 °F

    Showers
    Likely then
    Chance
    T-storms

  • Saturday Night

    Saturday Night: A slight chance of showers and thunderstorms before 1am, then a slight chance of showers after 4am. Mostly cloudy, with a low around 64. Northwest wind around 5 mph becoming northeast after midnight. Chance of precipitation is 20%.

    Low: 64 °F

    Slight Chance
    T-storms

  • Sunday

    Sunday: A 20 percent chance of showers. Partly sunny, with a high near 77. East wind 5 to 10 mph.

    High: 77 °F

    Slight Chance
    Showers

  • Sunday Night

    Sunday Night: A 30 percent chance of showers, mainly after 1am. Partly cloudy, with a low around 58. East wind 5 to 10 mph.

    Low: 58 °F

    Chance
    Showers

  • Monday

    Monday: A 20 percent chance of showers before 1pm. Partly sunny, with a high near 79. East wind 5 to 10 mph.

    High: 79 °F

    Slight Chance
    Showers

  • Monday Night

    Monday Night: A 20 percent chance of showers and thunderstorms after 1am. Mostly cloudy, with a low around 65. East wind 5 to 10 mph.

    Low: 65 °F

    Mostly Cloudy
    then Slight
    Chance
    T-storms

  • Tuesday

    Tuesday: A 20 percent chance of showers and thunderstorms before 1pm. Partly sunny, with a high near 86. South wind 5 to 10 mph.

    High: 86 °F

    Slight Chance
    T-storms

  • Tuesday Night

    Tuesday Night: A 30 percent chance of showers and thunderstorms, mainly after 1am. Partly cloudy, with a low around 71.

    Low: 71 °F

    Slight Chance
    T-storms then
    Chance
    Showers

Detailed Forecast

Tonight
A 10 percent chance of showers and thunderstorms after 5am. Mostly cloudy, with a low around 65. Calm wind becoming southeast around 5 mph.
Saturday
A chance of showers and thunderstorms before 7am, then showers likely and possibly a thunderstorm between 7am and 11am, then a chance of showers and thunderstorms after 11am. Mostly cloudy, with a high near 83. South wind 5 to 10 mph becoming west in the afternoon. Chance of precipitation is 60%. New rainfall amounts between a quarter and half of an inch possible.
Saturday Night
A slight chance of showers and thunderstorms before 1am, then a slight chance of showers after 4am. Mostly cloudy, with a low around 64. Northwest wind around 5 mph becoming northeast after midnight. Chance of precipitation is 20%.
Sunday
A 20 percent chance of showers. Partly sunny, with a high near 77. East wind 5 to 10 mph.
Sunday Night
A 30 percent chance of showers, mainly after 1am. Partly cloudy, with a low around 58. East wind 5 to 10 mph.
Monday
A 20 percent chance of showers before 1pm. Partly sunny, with a high near 79. East wind 5 to 10 mph.
Monday Night
A 20 percent chance of showers and thunderstorms after 1am. Mostly cloudy, with a low around 65. East wind 5 to 10 mph.
Tuesday
A 20 percent chance of showers and thunderstorms before 1pm. Partly sunny, with a high near 86. South wind 5 to 10 mph.
Tuesday Night
A 30 percent chance of showers and thunderstorms, mainly after 1am. Partly cloudy, with a low around 71.
Wednesday
A slight chance of showers, with thunderstorms also possible after 1pm. Mostly sunny and hot, with a high near 90. Chance of precipitation is 20%.
Wednesday Night
A 30 percent chance of showers and thunderstorms. Mostly clear, with a low around 71.
Thursday
A 30 percent chance of showers and thunderstorms. Mostly sunny, with a high near 87.
Thursday Night
A 30 percent chance of showers and thunderstorms. Partly cloudy, with a low around 68.
Friday
A 20 percent chance of showers and thunderstorms. Mostly sunny, with a high near 85.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
4 Miles WNW Beloit WI
 42.54°N 89.1°W (Elev. 889 ft)
Last Update:
8:38 pm CDT Jul 18, 2025
Forecast Valid:
11pm CDT Jul 18, 2025-6pm CDT Jul 25, 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