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

63°F

17°C

Humidity 37%
Wind Speed N 14 mph
Barometer 30.04 in
Dewpoint 36°F (2°C)
Visibility 10.00 mi
Last update 13 May 6:45 pm CDT
Extended Forecast for

Beloit WI

  • Tonight

    Tonight: Clear, with a low around 38. North wind 5 to 10 mph becoming light and variable in the evening.

    Low: 38 °F

    Clear

  • Thursday

    Thursday: Sunny, with a high near 70. Calm wind becoming south around 5 mph in the afternoon.

    High: 70 °F

    Sunny

  • Thursday Night

    Thursday Night: A 50 percent chance of showers, mainly between 10pm and 4am. Increasing clouds, with a low around 50. Southeast wind 5 to 10 mph.

    Low: 50 °F

    Slight Chance
    Showers then
    Chance
    Showers

  • Friday

    Friday: A 20 percent chance of showers before 1pm. Mostly sunny, with a high near 78. South wind around 15 mph, with gusts as high as 25 mph.

    High: 78 °F

    Slight Chance
    Showers

  • Friday Night

    Friday Night: A 30 percent chance of showers and thunderstorms after 1am. Partly cloudy, with a low around 56. South wind 5 to 15 mph.

    Low: 56 °F

    Mostly Clear
    then Chance
    T-storms

  • Saturday

    Saturday: A 50 percent chance of showers and thunderstorms, mainly after 1pm. Mostly sunny, with a high near 82. Calm wind becoming southwest around 5 mph in the morning.

    High: 82 °F

    Slight Chance
    T-storms then
    Chance
    Showers

  • Saturday Night

    Saturday Night: A chance of showers and thunderstorms. Mostly cloudy, with a low around 55. East wind around 5 mph becoming calm in the evening. Chance of precipitation is 50%.

    Low: 55 °F

    Chance
    Showers

  • Sunday

    Sunday: A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 1pm. Partly sunny, with a high near 79. Southeast wind 10 to 15 mph, with gusts as high as 25 mph. Chance of precipitation is 60%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

    High: 79 °F

    Showers
    Likely

  • Sunday Night

    Sunday Night: A 40 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 63.

    Low: 63 °F

    Chance
    T-storms

Detailed Forecast

Tonight
Clear, with a low around 38. North wind 5 to 10 mph becoming light and variable in the evening.
Thursday
Sunny, with a high near 70. Calm wind becoming south around 5 mph in the afternoon.
Thursday Night
A 50 percent chance of showers, mainly between 10pm and 4am. Increasing clouds, with a low around 50. Southeast wind 5 to 10 mph.
Friday
A 20 percent chance of showers before 1pm. Mostly sunny, with a high near 78. South wind around 15 mph, with gusts as high as 25 mph.
Friday Night
A 30 percent chance of showers and thunderstorms after 1am. Partly cloudy, with a low around 56. South wind 5 to 15 mph.
Saturday
A 50 percent chance of showers and thunderstorms, mainly after 1pm. Mostly sunny, with a high near 82. Calm wind becoming southwest around 5 mph in the morning.
Saturday Night
A chance of showers and thunderstorms. Mostly cloudy, with a low around 55. East wind around 5 mph becoming calm in the evening. Chance of precipitation is 50%.
Sunday
A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 1pm. Partly sunny, with a high near 79. Southeast wind 10 to 15 mph, with gusts as high as 25 mph. Chance of precipitation is 60%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Sunday Night
A 40 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 63.
Monday
A 50 percent chance of showers and thunderstorms, mainly after 1pm. Partly sunny, with a high near 85. Breezy.
Monday Night
Showers likely and possibly a thunderstorm. Mostly cloudy, with a low around 61. Breezy. Chance of precipitation is 70%.
Tuesday
A 50 percent chance of showers. Mostly cloudy, with a high near 75.
Tuesday Night
A 50 percent chance of showers. Mostly cloudy, with a low around 52.
Wednesday
Mostly sunny, with a high near 70.
Basemap Options
Click map to change the forecast location
Loading map...
Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Beloit WI
 42.54°N 89.01°W (Elev. 810 ft)
Last Update:
5:42 pm CDT May 13, 2026
Forecast Valid:
7pm CDT May 13, 2026-6pm CDT May 20, 2026
 
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