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Hazardous Weather Conditions

Current conditions at

Janesville-Rock County (KJVL)

Lat: 42.62°NLon: 89.04°WElev: 801ft.

Fair

28°F

-2°C

Humidity 93%
Wind Speed Calm
Barometer 30.31 in
Dewpoint 27°F (-3°C)
Visibility 10.00 mi
Last update 20 Apr 5:45 am CDT
Extended Forecast for

Beloit WI

Flood Warning until further notice
Click here for hazard details and duration
Flood Warning until further notice
  •  
    Flood Warning until further notice

    NOW until further notice

    Flood Warning

  • Today

    High: 54 °F

    Frost then
    Sunny

  • Tonight

    Tonight: Mostly cloudy, with a low around 43. South wind around 10 mph.

    Low: 43 °F

    Mostly Cloudy

  • Tuesday

    Tuesday: Mostly sunny, with a high near 74. West wind around 10 mph.

    High: 74 °F

    Mostly Sunny

  • Tuesday Night

    Tuesday Night: Mostly clear, with a low around 46. West wind around 5 mph becoming calm in the evening.

    Low: 46 °F

    Mostly Clear

  • Wednesday

    Wednesday: Sunny, with a high near 73. Northeast wind around 5 mph becoming southeast in the afternoon.

    High: 73 °F

    Sunny

  • Wednesday Night

    Wednesday Night: Partly cloudy, with a low around 56. Southeast wind 5 to 10 mph.

    Low: 56 °F

    Partly Cloudy

  • Thursday

    Thursday: Partly sunny, with a high near 78. South wind 10 to 15 mph, with gusts as high as 30 mph.

    High: 78 °F

    Partly Sunny

  • Thursday Night

    Thursday Night: Showers and possibly a thunderstorm. Low around 59. South wind around 15 mph, with gusts as high as 25 mph. Chance of precipitation is 80%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

    Low: 59 °F

    Showers

Detailed Forecast

Today
Widespread frost before 9am. Otherwise, sunny, with a high near 54. Light south wind increasing to 5 to 10 mph in the afternoon.
Tonight
Mostly cloudy, with a low around 43. South wind around 10 mph.
Tuesday
Mostly sunny, with a high near 74. West wind around 10 mph.
Tuesday Night
Mostly clear, with a low around 46. West wind around 5 mph becoming calm in the evening.
Wednesday
Sunny, with a high near 73. Northeast wind around 5 mph becoming southeast in the afternoon.
Wednesday Night
Partly cloudy, with a low around 56. Southeast wind 5 to 10 mph.
Thursday
Partly sunny, with a high near 78. South wind 10 to 15 mph, with gusts as high as 30 mph.
Thursday Night
Showers and possibly a thunderstorm. Low around 59. South wind around 15 mph, with gusts as high as 25 mph. Chance of precipitation is 80%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Friday
A 40 percent chance of showers. Mostly cloudy, with a high near 69.
Friday Night
A 20 percent chance of showers. Mostly cloudy, with a low around 44.
Saturday
Mostly sunny, with a high near 63.
Saturday Night
A 20 percent chance of showers. Partly cloudy, with a low around 43.
Sunday
Mostly sunny, with a high near 62.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Beloit WI
 42.52°N 89.02°W (Elev. 745 ft)
Last Update:
6:16 am CDT Apr 20, 2026
Forecast Valid:
6am CDT Apr 20, 2026-6pm CDT Apr 26, 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