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

41°F

5°C

Humidity 45%
Wind Speed E 6 mph
Barometer 30.18 in (1022.6 mb)
Dewpoint 21°F (-6°C)
Visibility 10.00 mi
Wind Chill37°F (3°C)
Last update 24 Mar 11:54 pm CDT
Extended Forecast for

Byron IL

  • Overnight

    Overnight: Partly cloudy, with a low around 38. Southeast wind around 5 mph.

    Low: 38 °F

    Partly Cloudy

  • Wednesday

    Wednesday: Partly sunny, with a high near 70. South southwest wind 5 to 10 mph increasing to 10 to 15 mph in the afternoon. Winds could gust as high as 25 mph.

    High: 70 °F

    Partly Sunny

  • Wednesday Night

    Wednesday Night: A 20 percent chance of showers and thunderstorms before 10pm. Mostly cloudy, then gradually becoming mostly clear, with a low around 51. South wind 5 to 10 mph.

    Low: 51 °F

    Slight Chance
    T-storms then
    Partly Cloudy

  • Thursday

    Thursday: A 50 percent chance of showers and thunderstorms after 1pm. Partly sunny, with a high near 77. South wind 5 to 15 mph becoming north in the afternoon. Winds could gust as high as 20 mph.

    High: 77 °F

    Mostly Sunny
    then Chance
    T-storms

  • Thursday Night

    Thursday Night: A 20 percent chance of showers before 1am. Mostly cloudy, with a low around 28. North northeast wind around 15 mph, with gusts as high as 25 mph.

    Low: 28 °F

    Slight Chance
    Showers

  • Friday

    Friday: Mostly sunny, with a high near 46.

    High: 46 °F

    Mostly Sunny

  • Friday Night

    Friday Night: Mostly clear, with a low around 25.

    Low: 25 °F

    Mostly Clear

  • Saturday

    Saturday: Sunny, with a high near 52.

    High: 52 °F

    Sunny

  • Saturday Night

    Saturday Night: Partly cloudy, with a low around 35.

    Low: 35 °F

    Partly Cloudy

Detailed Forecast

Overnight
Partly cloudy, with a low around 38. Southeast wind around 5 mph.
Wednesday
Partly sunny, with a high near 70. South southwest wind 5 to 10 mph increasing to 10 to 15 mph in the afternoon. Winds could gust as high as 25 mph.
Wednesday Night
A 20 percent chance of showers and thunderstorms before 10pm. Mostly cloudy, then gradually becoming mostly clear, with a low around 51. South wind 5 to 10 mph.
Thursday
A 50 percent chance of showers and thunderstorms after 1pm. Partly sunny, with a high near 77. South wind 5 to 15 mph becoming north in the afternoon. Winds could gust as high as 20 mph.
Thursday Night
A 20 percent chance of showers before 1am. Mostly cloudy, with a low around 28. North northeast wind around 15 mph, with gusts as high as 25 mph.
Friday
Mostly sunny, with a high near 46.
Friday Night
Mostly clear, with a low around 25.
Saturday
Sunny, with a high near 52.
Saturday Night
Partly cloudy, with a low around 35.
Sunday
Partly sunny, with a high near 60.
Sunday Night
Partly cloudy, with a low around 44.
Monday
Mostly sunny, with a high near 69.
Monday Night
A chance of showers. Mostly cloudy, with a low around 48.
Tuesday
A chance of showers. Mostly cloudy, with a high near 67.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Byron IL
 42.13°N 89.27°W
Last Update:
12:20 am CDT Mar 25, 2026
Forecast Valid:
12am CDT Mar 25, 2026-6pm CDT Mar 31, 2026
 
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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