National Oceanic and Atmospheric Administration National Weather Service United States Department of Commerce
Current conditions at

Janesville-Rock County (KJVL)

Lat: 42.62°NLon: 89.04°WElev: 801ft.

Mostly Cloudy

43°F

6°C

Humidity 76%
Wind Speed NW 17 G 28 mph
Barometer 29.77 in
Dewpoint 36°F (2°C)
Visibility 10.00 mi
Wind Chill35°F (2°C)
Last update 18 Apr 6:45 am CDT
Extended Forecast for

4 Miles WNW Beloit WI

  • Today

    Today: Mostly sunny, with a high near 48. Breezy, with a west wind 15 to 20 mph, with gusts as high as 30 mph.

    High: 48 °F

    Mostly Sunny
    then Mostly
    Sunny and
    Breezy

  • Tonight

    Tonight: Mostly clear, with a low around 31. West wind 10 to 15 mph decreasing to 5 to 10 mph after midnight. Winds could gust as high as 25 mph.

    Low: 31 °F

    Mostly Clear

  • Sunday

    Sunday: A 20 percent chance of showers after 1pm. Partly sunny, with a high near 48. West wind 5 to 15 mph.

    High: 48 °F

    Partly Sunny
    then Slight
    Chance
    Showers

  • Sunday Night

    Sunday Night: Mostly clear, with a low around 28. Northwest wind 5 to 10 mph becoming light north after midnight.

    Low: 28 °F

    Mostly Clear

  • Monday

    Monday: Sunny, with a high near 54. Light and variable wind becoming south 5 to 10 mph in the morning.

    High: 54 °F

    Sunny

  • Monday Night

    Monday Night: Mostly cloudy, with a low around 43. South wind 10 to 15 mph.

    Low: 43 °F

    Mostly Cloudy

  • Tuesday

    Tuesday: Mostly sunny, with a high near 71. Southwest wind 10 to 15 mph.

    High: 71 °F

    Mostly Sunny

  • Tuesday Night

    Tuesday Night: Mostly clear, with a low around 45. West wind 5 to 10 mph becoming east in the evening.

    Low: 45 °F

    Mostly Clear

  • Wednesday

    Wednesday: Sunny, with a high near 73.

    High: 73 °F

    Sunny

Detailed Forecast

Today
Mostly sunny, with a high near 48. Breezy, with a west wind 15 to 20 mph, with gusts as high as 30 mph.
Tonight
Mostly clear, with a low around 31. West wind 10 to 15 mph decreasing to 5 to 10 mph after midnight. Winds could gust as high as 25 mph.
Sunday
A 20 percent chance of showers after 1pm. Partly sunny, with a high near 48. West wind 5 to 15 mph.
Sunday Night
Mostly clear, with a low around 28. Northwest wind 5 to 10 mph becoming light north after midnight.
Monday
Sunny, with a high near 54. Light and variable wind becoming south 5 to 10 mph in the morning.
Monday Night
Mostly cloudy, with a low around 43. South wind 10 to 15 mph.
Tuesday
Mostly sunny, with a high near 71. Southwest wind 10 to 15 mph.
Tuesday Night
Mostly clear, with a low around 45. West wind 5 to 10 mph becoming east in the evening.
Wednesday
Sunny, with a high near 73.
Wednesday Night
Mostly clear, with a low around 54.
Thursday
A 20 percent chance of showers. Mostly sunny, with a high near 78.
Thursday Night
Showers and thunderstorms likely. Mostly cloudy, with a low around 58. Chance of precipitation is 70%.
Friday
A 50 percent chance of showers and thunderstorms. Mostly cloudy, with a high near 69.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
4 Miles WNW Beloit WI
 42.54°N 89.1°W (Elev. 889 ft)
Last Update:
6:31 am CDT Apr 18, 2026
Forecast Valid:
7am CDT Apr 18, 2026-6pm CDT Apr 24, 2026
 
Forecast Discussion
 
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Additional Resources

Radar & Satellite Image

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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