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.

Overcast

46°F

8°C

Humidity 100%
Wind Speed Calm
Barometer 30.32 in
Dewpoint 46°F (8°C)
Visibility 7.00 mi
Last update 1 Nov 4:15 am CST
Extended Forecast for

Beloit WI

  • Overnight

    Overnight: A 20 percent chance of showers. Cloudy, with a low around 49. Calm wind.

    Low: 49 °F

    Slight Chance
    Showers

  • Sunday

    Sunday: A 20 percent chance of showers before 10am. Cloudy, then gradually becoming mostly sunny, with a high near 65. Calm wind becoming south around 5 mph in the afternoon.

    High: 65 °F

    Slight Chance
    Showers then
    Partly Sunny

  • Sunday Night

    Sunday Night: Mostly cloudy, with a low around 51. South wind around 5 mph.

    Low: 51 °F

    Mostly Cloudy

  • Monday

    Monday: Showers likely, mainly between 9am and 1pm. Cloudy, with a high near 65. Southeast wind 10 to 15 mph. Chance of precipitation is 60%. New precipitation amounts of less than a tenth of an inch possible.

    High: 65 °F

    Slight Chance
    Showers then
    Showers
    Likely

  • Monday Night

    Monday Night: Showers likely, mainly before midnight. Cloudy, with a steady temperature around 62. South wind around 15 mph, with gusts as high as 25 mph. Chance of precipitation is 70%. New precipitation amounts of less than a tenth of an inch possible.

    Low: 62 °F

    Showers
    Likely

  • Tuesday

    Tuesday: Showers likely before noon, then showers and possibly a thunderstorm between noon and 3pm, then showers after 3pm. High near 71. Breezy, with a south wind 15 to 20 mph, with gusts as high as 30 mph. Chance of precipitation is 90%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

    High: 71 °F

    Showers
    Likely and
    Breezy then
    Showers

  • Tuesday Night

    Tuesday Night: Showers. Low around 53. South wind 10 to 15 mph. Chance of precipitation is 90%. New precipitation amounts between a quarter and half of an inch possible.

    Low: 53 °F

    Showers then
    Showers
    Likely

  • Wednesday

    Wednesday: Showers likely, mainly before noon. Mostly cloudy, with a high near 64. Southwest wind around 10 mph. Chance of precipitation is 60%. New precipitation amounts of less than a tenth of an inch possible.

    High: 64 °F

    Showers
    Likely

  • Wednesday Night

    Wednesday Night: A 30 percent chance of rain. Mostly cloudy, with a low around 47.

    Low: 47 °F

    Chance Rain

Detailed Forecast

Overnight
A 20 percent chance of showers. Cloudy, with a low around 49. Calm wind.
Sunday
A 20 percent chance of showers before 10am. Cloudy, then gradually becoming mostly sunny, with a high near 65. Calm wind becoming south around 5 mph in the afternoon.
Sunday Night
Mostly cloudy, with a low around 51. South wind around 5 mph.
Monday
Showers likely, mainly between 9am and 1pm. Cloudy, with a high near 65. Southeast wind 10 to 15 mph. Chance of precipitation is 60%. New precipitation amounts of less than a tenth of an inch possible.
Monday Night
Showers likely, mainly before midnight. Cloudy, with a steady temperature around 62. South wind around 15 mph, with gusts as high as 25 mph. Chance of precipitation is 70%. New precipitation amounts of less than a tenth of an inch possible.
Tuesday
Showers likely before noon, then showers and possibly a thunderstorm between noon and 3pm, then showers after 3pm. High near 71. Breezy, with a south wind 15 to 20 mph, with gusts as high as 30 mph. Chance of precipitation is 90%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Tuesday Night
Showers. Low around 53. South wind 10 to 15 mph. Chance of precipitation is 90%. New precipitation amounts between a quarter and half of an inch possible.
Wednesday
Showers likely, mainly before noon. Mostly cloudy, with a high near 64. Southwest wind around 10 mph. Chance of precipitation is 60%. New precipitation amounts of less than a tenth of an inch possible.
Wednesday Night
A 30 percent chance of rain. Mostly cloudy, with a low around 47.
Thursday
A 40 percent chance of rain. Mostly cloudy, with a high near 62.
Thursday Night
A 20 percent chance of rain. Mostly cloudy, with a low around 44.
Friday
A 30 percent chance of rain. Partly sunny, with a high near 59.
Friday Night
Mostly cloudy, with a low around 40.
Saturday
Partly sunny, with a high near 59.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Beloit WI
 42.52°N 89.02°W (Elev. 745 ft)
Last Update:
3:33 am CST Nov 1, 2026
Forecast Valid:
5am CST Nov 1, 2026-6pm CST Nov 7, 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