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

Hazardous Weather Conditions

Current conditions at

Rockford, Greater Rockford Airport (KRFD)

Lat: 42.19°NLon: 89.09°WElev: 735ft.

Partly Cloudy

89°F

32°C

Humidity 61%
Wind Speed SE 12 mph
Barometer 29.89 in (1011.4 mb)
Dewpoint 74°F (23°C)
Visibility 10.00 mi
Heat Index98°F (37°C)
Last update 3 Sep 5:54 pm CDT
Extended Forecast for

Byron IL

  • Tonight

    Tonight: Mostly clear, with a low around 72. South southeast wind 5 to 10 mph.

    Low: 72 °F

    Mostly Clear

  • Friday

    Friday: A 20 percent chance of showers and thunderstorms before 10am. Mostly sunny, with a high near 92. Heat index values as high as 100. East southeast wind 5 to 10 mph becoming west southwest in the afternoon.

    High: 92 °F

    Slight Chance
    T-storms then
    Mostly Sunny

  • Friday Night

    Friday Night: A chance of showers and thunderstorms. Partly cloudy, with a low around 69. Southwest wind around 5 mph becoming calm. Chance of precipitation is 40%.

    Low: 69 °F

    Chance
    T-storms

  • Saturday

    Saturday: Mostly sunny, with a high near 88. Heat index values as high as 96. Calm wind becoming northeast around 5 mph in the morning. Winds could gust as high as 10 mph.

    High: 88 °F

    Mostly Sunny

  • Saturday Night

    Saturday Night: Mostly clear, with a low around 62. East northeast wind 5 to 10 mph.

    Low: 62 °F

    Mostly Clear

  • Sunday

    Sunday: Mostly sunny, with a high near 83.

    High: 83 °F

    Mostly Sunny

  • Sunday Night

    Sunday Night: Partly cloudy, with a low around 58.

    Low: 58 °F

    Partly Cloudy

  • Labor Day

    Labor Day: Mostly sunny, with a high near 82.

    High: 82 °F

    Mostly Sunny

  • Monday Night

    Monday Night: Partly cloudy, with a low around 62.

    Low: 62 °F

    Partly Cloudy

Detailed Forecast

Tonight
Mostly clear, with a low around 72. South southeast wind 5 to 10 mph.
Friday
A 20 percent chance of showers and thunderstorms before 10am. Mostly sunny, with a high near 92. Heat index values as high as 100. East southeast wind 5 to 10 mph becoming west southwest in the afternoon.
Friday Night
A chance of showers and thunderstorms. Partly cloudy, with a low around 69. Southwest wind around 5 mph becoming calm. Chance of precipitation is 40%.
Saturday
Mostly sunny, with a high near 88. Heat index values as high as 96. Calm wind becoming northeast around 5 mph in the morning. Winds could gust as high as 10 mph.
Saturday Night
Mostly clear, with a low around 62. East northeast wind 5 to 10 mph.
Sunday
Mostly sunny, with a high near 83.
Sunday Night
Partly cloudy, with a low around 58.
Labor Day
Mostly sunny, with a high near 82.
Monday Night
Partly cloudy, with a low around 62.
Tuesday
Mostly sunny, with a high near 87.
Tuesday Night
A chance of showers. Partly cloudy, with a low around 70.
Wednesday
Partly sunny, with a high near 88.
Wednesday Night
A chance of showers. Partly cloudy, with a low around 65.
Thursday
Mostly sunny, with a high near 84.
Basemap Options
Click map to change the forecast location
Loading map...
Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Byron IL
 42.13°N 89.24°W
Last Update:
5:51 pm CDT Sep 3, 2026
Forecast Valid:
6pm CDT Sep 3, 2026-6pm CDT Sep 10, 2026
 
Forecast Discussion
 
Get as KML Get as XML

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