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.

Mostly Cloudy

34°F

1°C

Humidity 87%
Wind Speed Calm
Barometer 30.03 in
Dewpoint 30°F (-1°C)
Visibility 10.00 mi
Last update 19 Mar 1:55 am CDT
Extended Forecast for

Beloit WI

  • Overnight

    Overnight: Mostly cloudy, with a low around 30. Calm wind.

    Low: 30 °F

    Mostly Cloudy

  • Thursday

    Thursday: Mostly sunny, with a high near 50. Southeast wind around 5 mph.

    High: 50 °F

    Mostly Sunny

  • Thursday Night

    Thursday Night: Mostly cloudy, with a low around 36. East wind around 5 mph becoming southwest after midnight.

    Low: 36 °F

    Mostly Cloudy

  • Friday

    Friday: Mostly cloudy, with a high near 59. Southwest wind 5 to 10 mph becoming northwest in the afternoon.

    High: 59 °F

    Mostly Cloudy

  • Friday Night

    Friday Night: Mostly cloudy, with a low around 38. Northwest wind around 5 mph becoming calm in the evening.

    Low: 38 °F

    Mostly Cloudy

  • Saturday

    Saturday: Mostly sunny, with a high near 65. South wind 5 to 10 mph.

    High: 65 °F

    Mostly Sunny

  • Saturday Night

    Saturday Night: Partly cloudy, with a low around 44. South wind around 10 mph.

    Low: 44 °F

    Partly Cloudy

  • Sunday

    Sunday: A 20 percent chance of rain before 1pm. Mostly cloudy, with a high near 52. North wind 10 to 15 mph, with gusts as high as 25 mph.

    High: 52 °F

    Slight Chance
    Rain

  • Sunday Night

    Sunday Night: Mostly cloudy, with a low around 28.

    Low: 28 °F

    Mostly Cloudy

Detailed Forecast

Overnight
Mostly cloudy, with a low around 30. Calm wind.
Thursday
Mostly sunny, with a high near 50. Southeast wind around 5 mph.
Thursday Night
Mostly cloudy, with a low around 36. East wind around 5 mph becoming southwest after midnight.
Friday
Mostly cloudy, with a high near 59. Southwest wind 5 to 10 mph becoming northwest in the afternoon.
Friday Night
Mostly cloudy, with a low around 38. Northwest wind around 5 mph becoming calm in the evening.
Saturday
Mostly sunny, with a high near 65. South wind 5 to 10 mph.
Saturday Night
Partly cloudy, with a low around 44. South wind around 10 mph.
Sunday
A 20 percent chance of rain before 1pm. Mostly cloudy, with a high near 52. North wind 10 to 15 mph, with gusts as high as 25 mph.
Sunday Night
Mostly cloudy, with a low around 28.
Monday
Sunny, with a high near 44.
Monday Night
Mostly cloudy, with a low around 29.
Tuesday
Mostly cloudy, with a high near 51.
Tuesday Night
Mostly cloudy, with a low around 33.
Wednesday
Mostly cloudy, with a high near 56.
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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:
1:21 am CDT Mar 19, 2026
Forecast Valid:
2am CDT Mar 19, 2026-6pm CDT Mar 25, 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