Current conditions at

Janesville-Rock County (KJVL)

Lat: 42.62°NLon: 89.04°WElev: 801ft.

Mostly Cloudy

34°F

1°C

Humidity 81%
Wind Speed Calm
Barometer 29.97 in
Dewpoint 28°F (-2°C)
Visibility 10.00 mi
Last update 7 May 6:45 am CDT
Extended Forecast for

Beloit WI

Frost Advisory until May 7, 08:00am
Click here for hazard details and duration
...
  •  
    Frost Advisory until May 7, 08:00am

    NOW until 8:00am Thu

    Frost Advisory

  • Today

    High: 59 °F

    Frost then
    Slight Chance
    T-storms

  • Tonight

    Tonight: Mostly clear, with a low around 37. Northwest wind around 5 mph becoming calm  in the evening.

    Low: 37 °F

    Mostly Clear

  • Friday

    Friday: Areas of frost before 7am.  Otherwise, partly sunny, with a high near 64. Light and variable wind becoming southwest 5 to 10 mph in the afternoon.

    High: 64 °F

    Areas Frost
    then Partly
    Sunny

  • Friday Night

    Friday Night: Mostly clear, with a low around 45. Southwest wind around 5 mph.

    Low: 45 °F

    Mostly Clear

  • Saturday

    Saturday: A 20 percent chance of showers after 1pm.  Mostly sunny, with a high near 70. Breezy, with a southwest wind 10 to 20 mph, with gusts as high as 30 mph.

    High: 70 °F

    Mostly Sunny
    then Slight
    Chance
    Showers and
    Breezy

  • Saturday Night

    Saturday Night: Partly cloudy, with a low around 42. Northwest wind 5 to 10 mph becoming light north  in the evening.

    Low: 42 °F

    Partly Cloudy

  • Sunday

    Sunday: Mostly sunny, with a high near 60. Northwest wind 5 to 15 mph.

    High: 60 °F

    Mostly Sunny

  • Sunday Night

    Sunday Night: Mostly clear, with a low around 38. Northwest wind 5 to 10 mph becoming light north  in the evening.

    Low: 38 °F

    Mostly Clear

Detailed Forecast

Today
A slight chance of showers before 1pm, then a slight chance of showers and thunderstorms between 1pm and 4pm, then a slight chance of showers after 4pm. Widespread frost, mainly before 7am. Otherwise, mostly cloudy, with a high near 59. Light south wind becoming west 10 to 15 mph in the morning. Chance of precipitation is 20%.
Tonight
Mostly clear, with a low around 37. Northwest wind around 5 mph becoming calm in the evening.
Friday
Areas of frost before 7am. Otherwise, partly sunny, with a high near 64. Light and variable wind becoming southwest 5 to 10 mph in the afternoon.
Friday Night
Mostly clear, with a low around 45. Southwest wind around 5 mph.
Saturday
A 20 percent chance of showers after 1pm. Mostly sunny, with a high near 70. Breezy, with a southwest wind 10 to 20 mph, with gusts as high as 30 mph.
Saturday Night
Partly cloudy, with a low around 42. Northwest wind 5 to 10 mph becoming light north in the evening.
Sunday
Mostly sunny, with a high near 60. Northwest wind 5 to 15 mph.
Sunday Night
Mostly clear, with a low around 38. Northwest wind 5 to 10 mph becoming light north in the evening.
Monday
Sunny, with a high near 62.
Monday Night
A 30 percent chance of showers after 1am. Partly cloudy, with a low around 42.
Tuesday
Showers likely. Partly sunny, with a high near 65. Chance of precipitation is 70%.
Tuesday Night
A 30 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 45.
Wednesday
Mostly sunny, with a high near 68.
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ABOUT THIS FORECAST

 
Point Forecast:
Beloit WI
 42.52°N 89.02°W (Elev. 745 ft)
4:16 am CDT May 7, 2026
6am CDT May 7, 2026-6pm CDT May 13, 2026
 
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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