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.

Fair

37°F

3°C

Humidity 41%
Wind Speed N 14 G 17 mph
Barometer 30.43 in
Dewpoint 16°F (-9°C)
Visibility 10.00 mi
Wind Chill28°F (-2°C)
Last update 23 Mar 11:45 am CDT
Extended Forecast for

4 Miles WNW Beloit WI

  • This Afternoon

    This Afternoon: Sunny, with a high near 46. North wind 5 to 10 mph.

    High: 46 °F

    Sunny

  • Tonight

    Tonight: Increasing clouds, with a low around 29. East wind 5 to 10 mph becoming south after midnight.

    Low: 29 °F

    Increasing
    Clouds

  • Tuesday

    Tuesday: Partly sunny, with a high near 54. South wind 10 to 15 mph.

    High: 54 °F

    Partly Sunny

  • Tuesday Night

    Tuesday Night: Mostly cloudy, with a low around 37. South wind 5 to 10 mph.

    Low: 37 °F

    Mostly Cloudy

  • Wednesday

    Wednesday: Partly sunny, with a high near 64. Southwest wind 10 to 15 mph.

    High: 64 °F

    Partly Sunny

  • Wednesday Night

    Wednesday Night: Mostly cloudy, with a low around 48. South wind around 5 mph.

    Low: 48 °F

    Mostly Cloudy

  • Thursday

    Thursday: A 30 percent chance of rain after 1pm. Partly sunny, with a high near 70. South wind 5 to 15 mph becoming north in the afternoon.

    High: 70 °F

    Partly Sunny
    then Chance
    Rain

  • Thursday Night

    Thursday Night: A 20 percent chance of rain before 1am. Mostly cloudy, with a low around 28. North wind around 15 mph.

    Low: 28 °F

    Slight Chance
    Rain

  • Friday

    Friday: Mostly cloudy, then gradually becoming sunny, with a high near 43.

    High: 43 °F

    Decreasing
    Clouds

Detailed Forecast

This Afternoon
Sunny, with a high near 46. North wind 5 to 10 mph.
Tonight
Increasing clouds, with a low around 29. East wind 5 to 10 mph becoming south after midnight.
Tuesday
Partly sunny, with a high near 54. South wind 10 to 15 mph.
Tuesday Night
Mostly cloudy, with a low around 37. South wind 5 to 10 mph.
Wednesday
Partly sunny, with a high near 64. Southwest wind 10 to 15 mph.
Wednesday Night
Mostly cloudy, with a low around 48. South wind around 5 mph.
Thursday
A 30 percent chance of rain after 1pm. Partly sunny, with a high near 70. South wind 5 to 15 mph becoming north in the afternoon.
Thursday Night
A 20 percent chance of rain before 1am. Mostly cloudy, with a low around 28. North wind around 15 mph.
Friday
Mostly cloudy, then gradually becoming sunny, with a high near 43.
Friday Night
Mostly clear, with a low around 25.
Saturday
Sunny, with a high near 50.
Saturday Night
Mostly clear, with a low around 32.
Sunday
Partly sunny, with a high near 57.
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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:
11:57 am CDT Mar 23, 2026
Forecast Valid:
12pm CDT Mar 23, 2026-6pm CDT Mar 29, 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