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

Rockford, Greater Rockford Airport (KRFD)

Lat: 42.19°NLon: 89.09°WElev: 735ft.

A Few Clouds

6°F

-14°C

Humidity 80%
Wind Speed N 3 mph
Barometer 30.37 in (1030.0 mb)
Dewpoint 1°F (-17°C)
Visibility 10.00 mi
Last update 7 Dec 9:54 pm CST
Extended Forecast for

Byron IL

  • Tonight

    Tonight: Mostly cloudy, with a temperature rising to around 8 by 5am. Wind chill values as low as -8. North wind around 5 mph becoming calm after midnight.

    Low: 1 °F⇑

    Mostly Cloudy

  • Monday

    Monday: Mostly cloudy, with a high near 22. Light south southwest wind becoming south 5 to 10 mph in the morning.

    High: 22 °F

    Mostly Cloudy

  • Monday Night

    Monday Night: A 20 percent chance of snow before midnight. Mostly cloudy, with a temperature falling to near 17 by 8pm, then rising to around 26 during the remainder of the night. South wind 10 to 15 mph, with gusts as high as 25 mph.

    Low: 17 °F⇑

    Slight Chance
    Snow then
    Mostly Cloudy

  • Tuesday

    Tuesday: Cloudy, with a high near 36. West southwest wind 10 to 15 mph, with gusts as high as 20 mph.

    High: 36 °F

    Cloudy

  • Tuesday Night

    Tuesday Night: Rain and snow likely before 9pm, then rain likely between 9pm and 3am, then a chance of snow after 3am. Mostly cloudy, with a low around 31. Breezy, with a south wind 15 to 20 mph becoming west after midnight. Winds could gust as high as 30 mph. Chance of precipitation is 70%.

    Low: 31 °F

    Rain/Snow
    Likely and
    Breezy

  • Wednesday

    Wednesday: A 20 percent chance of snow before noon. Mostly cloudy, with a high near 34. Breezy.

    High: 34 °F

    Slight Chance
    Snow and
    Breezy then
    Mostly Cloudy

  • Wednesday Night

    Wednesday Night: Mostly cloudy, with a low around 11.

    Low: 11 °F

    Mostly Cloudy

  • Thursday

    Thursday: A chance of snow. Partly sunny, with a high near 22.

    High: 22 °F

    Chance Snow

  • Thursday Night

    Thursday Night: A chance of snow before midnight. Mostly cloudy, with a low around 3.

    Low: 3 °F

    Chance Snow
    then Mostly
    Cloudy

Detailed Forecast

Tonight
Mostly cloudy, with a temperature rising to around 8 by 5am. Wind chill values as low as -8. North wind around 5 mph becoming calm after midnight.
Monday
Mostly cloudy, with a high near 22. Light south southwest wind becoming south 5 to 10 mph in the morning.
Monday Night
A 20 percent chance of snow before midnight. Mostly cloudy, with a temperature falling to near 17 by 8pm, then rising to around 26 during the remainder of the night. South wind 10 to 15 mph, with gusts as high as 25 mph.
Tuesday
Cloudy, with a high near 36. West southwest wind 10 to 15 mph, with gusts as high as 20 mph.
Tuesday Night
Rain and snow likely before 9pm, then rain likely between 9pm and 3am, then a chance of snow after 3am. Mostly cloudy, with a low around 31. Breezy, with a south wind 15 to 20 mph becoming west after midnight. Winds could gust as high as 30 mph. Chance of precipitation is 70%.
Wednesday
A 20 percent chance of snow before noon. Mostly cloudy, with a high near 34. Breezy.
Wednesday Night
Mostly cloudy, with a low around 11.
Thursday
A chance of snow. Partly sunny, with a high near 22.
Thursday Night
A chance of snow before midnight. Mostly cloudy, with a low around 3.
Friday
Mostly cloudy, with a high near 14.
Friday Night
Mostly cloudy, with a low around -4.
Saturday
Partly sunny and cold, with a high near 7.
Saturday Night
Mostly cloudy, with a low around -5.
Sunday
Mostly sunny, with a high near 12.
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:
8:46 pm CST Dec 7, 2025
Forecast Valid:
10pm CST Dec 7, 2025-6pm CST Dec 14, 2025
 
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