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

Extreme Heat and Tropical Storm Bertha Impacts

Dangerous heat will expand from the Gulf Coast into the Southern Plains and Desert Southwest through week's end. Additional extreme heat impacting the Pacific Northwest will shift to the northern Plains by the weekend. Tropical Storm Bertha is expected to continue to impact portions of the northwestern Gulf Coast from south central Louisiana to the upper Texas coast today. Read More >

Current conditions at

Janesville-Rock County (KJVL)

Lat: 42.62°NLon: 89.04°WElev: 801ft.

Partly Cloudy

75°F

24°C

Humidity 41%
Wind Speed S 5 mph
Barometer 30.24 in
Dewpoint 50°F (10°C)
Visibility 10.00 mi
Last update 23 Jul 10:45 am CDT
Extended Forecast for

3 Miles ESE South Beloit IL

  • Today

    Today: Mostly sunny, with a high near 77. Southwest wind around 5 mph.

    High: 77 °F

    Mostly Sunny

  • Tonight

    Tonight: Mostly cloudy, with a low around 56. Southwest wind around 5 mph becoming calm.

    Low: 56 °F

    Mostly Cloudy

  • Friday

    Friday: Mostly sunny, with a high near 81. Light and variable wind becoming south 5 to 10 mph in the afternoon.

    High: 81 °F

    Mostly Sunny

  • Friday Night

    Friday Night: Partly cloudy, with a low around 58. South southwest wind 5 to 10 mph becoming light in the evening.

    Low: 58 °F

    Partly Cloudy

  • Saturday

    Saturday: Partly sunny, with a high near 83. South wind 5 to 10 mph, with gusts as high as 15 mph.

    High: 83 °F

    Partly Sunny

  • Saturday Night

    Saturday Night: Partly cloudy, with a low around 66.

    Low: 66 °F

    Partly Cloudy

  • Sunday

    Sunday: Mostly sunny, with a high near 90.

    High: 90 °F

    Mostly Sunny

  • Sunday Night

    Sunday Night: A chance of showers after 1am. Partly cloudy, with a low around 71.

    Low: 71 °F

    Partly Cloudy
    then Chance
    Showers

  • Monday

    Monday: Mostly sunny, with a high near 92.

    High: 92 °F

    Mostly Sunny

Detailed Forecast

Today
Mostly sunny, with a high near 77. Southwest wind around 5 mph.
Tonight
Mostly cloudy, with a low around 56. Southwest wind around 5 mph becoming calm.
Friday
Mostly sunny, with a high near 81. Light and variable wind becoming south 5 to 10 mph in the afternoon.
Friday Night
Partly cloudy, with a low around 58. South southwest wind 5 to 10 mph becoming light in the evening.
Saturday
Partly sunny, with a high near 83. South wind 5 to 10 mph, with gusts as high as 15 mph.
Saturday Night
Partly cloudy, with a low around 66.
Sunday
Mostly sunny, with a high near 90.
Sunday Night
A chance of showers after 1am. Partly cloudy, with a low around 71.
Monday
Mostly sunny, with a high near 92.
Monday Night
Partly cloudy, with a low around 67.
Tuesday
Mostly sunny, with a high near 86.
Tuesday Night
Mostly clear, with a low around 63.
Wednesday
Sunny, with a high near 86.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
3 Miles ESE South Beloit IL
 42.47°N 88.99°W
Last Update:
9:26 am CDT Jul 23, 2026
Forecast Valid:
11am CDT Jul 23, 2026-6pm CDT Jul 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