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.

Light Drizzle Fog/Mist

44°F

7°C

Humidity 96%
Wind Speed N 7 mph
Barometer 30.22 in (1023.5 mb)
Dewpoint 43°F (6°C)
Visibility 4.00 mi
Wind Chill40°F (4°C)
Last update 10 Apr 7:54 am CDT
Extended Forecast for

Byron IL

  • Today

    Today: Partly sunny, with a high near 54. North northwest wind around 10 mph, with gusts as high as 20 mph.

    High: 54 °F

    Partly Sunny

  • Tonight

    Tonight: Mostly clear, with a low around 35. North northwest wind around 5 mph becoming east southeast after midnight. Winds could gust as high as 10 mph.

    Low: 35 °F

    Mostly Clear

  • Saturday

    Saturday: A 30 percent chance of showers after 1pm. Increasing clouds, with a high near 58. Southeast wind 5 to 10 mph, with gusts as high as 15 mph.

    High: 58 °F

    Mostly Sunny
    then Chance
    Showers

  • Saturday Night

    Saturday Night: A 50 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 51. Southeast wind 10 to 15 mph, with gusts as high as 25 mph.

    Low: 51 °F

    Chance
    Showers

  • Sunday

    Sunday: A slight chance of showers before 10am, then a slight chance of showers and thunderstorms between 10am and 1pm, then showers likely and possibly a thunderstorm after 1pm. Mostly cloudy, with a high near 74. Breezy, with a south southwest wind 15 to 25 mph, with gusts as high as 30 mph. Chance of precipitation is 70%.

    High: 74 °F

    Breezy.
    Slight Chance
    T-storms then
    Showers
    Likely

  • Sunday Night

    Sunday Night: A 50 percent chance of showers and thunderstorms, mainly before 1am. Mostly cloudy, with a low around 61. Breezy.

    Low: 61 °F

    Chance
    T-storms and
    Breezy then
    Chance
    Showers

  • Monday

    Monday: A 20 percent chance of showers and thunderstorms after 1pm. Partly sunny, with a high near 78.

    High: 78 °F

    Mostly Cloudy
    then Slight
    Chance
    T-storms

  • Monday Night

    Monday Night: A chance of showers. Mostly cloudy, with a low around 64.

    Low: 64 °F

    Chance
    Showers

  • Tuesday

    Tuesday: Showers likely and possibly a thunderstorm after 1pm. Partly sunny, with a high near 81.

    High: 81 °F

    Partly Sunny
    then Showers
    Likely

Detailed Forecast

Today
Partly sunny, with a high near 54. North northwest wind around 10 mph, with gusts as high as 20 mph.
Tonight
Mostly clear, with a low around 35. North northwest wind around 5 mph becoming east southeast after midnight. Winds could gust as high as 10 mph.
Saturday
A 30 percent chance of showers after 1pm. Increasing clouds, with a high near 58. Southeast wind 5 to 10 mph, with gusts as high as 15 mph.
Saturday Night
A 50 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 51. Southeast wind 10 to 15 mph, with gusts as high as 25 mph.
Sunday
A slight chance of showers before 10am, then a slight chance of showers and thunderstorms between 10am and 1pm, then showers likely and possibly a thunderstorm after 1pm. Mostly cloudy, with a high near 74. Breezy, with a south southwest wind 15 to 25 mph, with gusts as high as 30 mph. Chance of precipitation is 70%.
Sunday Night
A 50 percent chance of showers and thunderstorms, mainly before 1am. Mostly cloudy, with a low around 61. Breezy.
Monday
A 20 percent chance of showers and thunderstorms after 1pm. Partly sunny, with a high near 78.
Monday Night
A chance of showers. Mostly cloudy, with a low around 64.
Tuesday
Showers likely and possibly a thunderstorm after 1pm. Partly sunny, with a high near 81.
Tuesday Night
Showers and possibly a thunderstorm before 1am, then a chance of showers. Mostly cloudy, with a low around 59.
Wednesday
A chance of showers and thunderstorms. Partly sunny, with a high near 71.
Wednesday Night
A chance of showers. Partly cloudy, with a low around 52.
Thursday
A chance of showers. Mostly sunny, with a high near 76.
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ABOUT THIS FORECAST

 
Point Forecast:
Byron IL
 42.13°N 89.27°W
Last Update:
6:01 am CDT Apr 10, 2026
Forecast Valid:
8am CDT Apr 10, 2026-6pm CDT Apr 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