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.

Overcast

39°F

4°C

Humidity 46%
Wind Speed S 9 mph
Barometer 29.96 in (1015.5 mb)
Dewpoint 20°F (-7°C)
Visibility 10.00 mi
Wind Chill33°F (1°C)
Last update 9 Feb 4:54 pm CST
Extended Forecast for

Byron IL

  • Tonight

    Tonight: Mostly cloudy, with a low around 34. South wind around 10 mph becoming northwest after midnight. Winds could gust as high as 20 mph.

    Low: 34 °F

    Mostly Cloudy

  • Tuesday

    Tuesday: Mostly sunny, with a high near 43. Breezy, with a northwest wind 10 to 20 mph, with gusts as high as 30 mph.

    High: 43 °F

    Partly Sunny
    then Sunny
    and Breezy

  • Tuesday Night

    Tuesday Night: Partly cloudy, with a low around 24. Northwest wind around 10 mph, with gusts as high as 20 mph.

    Low: 24 °F

    Partly Cloudy

  • Wednesday

    Wednesday: Sunny, with a high near 40. Northwest wind 5 to 10 mph, with gusts as high as 15 mph.

    High: 40 °F

    Sunny

  • Wednesday Night

    Wednesday Night: Partly cloudy, with a low around 24. Northwest wind around 5 mph becoming calm.

    Low: 24 °F

    Partly Cloudy

  • Thursday

    Thursday: A 20 percent chance of snow after noon. Mostly cloudy, with a high near 39.

    High: 39 °F

    Cloudy then
    Slight Chance
    Snow

  • Thursday Night

    Thursday Night: A 20 percent chance of snow before midnight. Mostly cloudy, with a low around 25.

    Low: 25 °F

    Slight Chance
    Snow then
    Mostly Cloudy

  • Friday

    Friday: Sunny, with a high near 44.

    High: 44 °F

    Sunny

  • Friday Night

    Friday Night: Partly cloudy, with a low around 26.

    Low: 26 °F

    Partly Cloudy

Detailed Forecast

Tonight
Mostly cloudy, with a low around 34. South wind around 10 mph becoming northwest after midnight. Winds could gust as high as 20 mph.
Tuesday
Mostly sunny, with a high near 43. Breezy, with a northwest wind 10 to 20 mph, with gusts as high as 30 mph.
Tuesday Night
Partly cloudy, with a low around 24. Northwest wind around 10 mph, with gusts as high as 20 mph.
Wednesday
Sunny, with a high near 40. Northwest wind 5 to 10 mph, with gusts as high as 15 mph.
Wednesday Night
Partly cloudy, with a low around 24. Northwest wind around 5 mph becoming calm.
Thursday
A 20 percent chance of snow after noon. Mostly cloudy, with a high near 39.
Thursday Night
A 20 percent chance of snow before midnight. Mostly cloudy, with a low around 25.
Friday
Sunny, with a high near 44.
Friday Night
Partly cloudy, with a low around 26.
Saturday
Mostly cloudy, with a high near 44.
Saturday Night
A chance of rain and snow. Mostly cloudy, with a low around 30.
Sunday
A chance of rain and snow. Mostly sunny, with a high near 43.
Sunday Night
Partly cloudy, with a low around 29.
Washington's Birthday
Mostly cloudy, with a high near 47.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Byron IL
 42.13°N 89.27°W
Last Update:
3:11 pm CST Feb 9, 2026
Forecast Valid:
5pm CST Feb 9, 2026-6pm CST Feb 16, 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