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 Rain

40°F

4°C

Humidity 79%
Wind Speed SW 20 G 26 mph
Barometer 29.28 in (992.0 mb)
Dewpoint 34°F (1°C)
Visibility 10.00 mi
Wind Chill30°F (-1°C)
Last update 9 Dec 11:54 pm CST
Extended Forecast for

Byron IL

  • Overnight

    Overnight: A chance of rain before 4am, then a chance of snow between 4am and 5am, then snow likely, possibly mixed with rain after 5am. Cloudy, with a low around 29. Breezy, with a west wind around 20 mph, with gusts as high as 35 mph. Chance of precipitation is 60%. Little or no snow accumulation expected.

    Low: 29 °F

    Rain/Snow
    Likely and
    Breezy

  • Wednesday

    Wednesday: Snow, mainly before 9am. Temperature falling to around 24 by 5pm. Blustery, with a north northwest wind 15 to 20 mph, with gusts as high as 35 mph. Chance of precipitation is 90%. New snow accumulation of less than a half inch possible.

    High: 31 °F⇓

    Snow and
    Blustery then
    Slight Chance
    Snow

  • Wednesday Night

    Wednesday Night: Cloudy, then gradually becoming partly cloudy, with a low around 8. Wind chill values as low as 1. Northwest wind 5 to 10 mph, with gusts as high as 20 mph.

    Low: 8 °F

    Decreasing
    Clouds

  • Thursday

    Thursday: A 20 percent chance of snow after noon. Partly sunny, with a high near 22. West northwest wind around 5 mph becoming south in the afternoon.

    High: 22 °F

    Mostly Sunny
    then Slight
    Chance Snow

  • Thursday Night

    Thursday Night: Snow likely. Cloudy, with a low around 17. South southeast wind around 5 mph becoming north northeast after midnight. Chance of precipitation is 60%.

    Low: 17 °F

    Snow Likely

  • Friday

    Friday: A 40 percent chance of snow. Mostly cloudy, with a high near 25.

    High: 25 °F

    Chance Snow

  • Friday Night

    Friday Night: A 20 percent chance of snow before midnight. Mostly cloudy, with a low around 4.

    Low: 4 °F

    Slight Chance
    Snow then
    Mostly Cloudy

  • Saturday

    Saturday: Snow likely, mainly after noon. Mostly cloudy, with a high near 11.

    High: 11 °F

    Snow Likely

  • Saturday Night

    Saturday Night: Partly cloudy, with a low around -10.

    Low: -10 °F

    Partly Cloudy

Detailed Forecast

Overnight
A chance of rain before 4am, then a chance of snow between 4am and 5am, then snow likely, possibly mixed with rain after 5am. Cloudy, with a low around 29. Breezy, with a west wind around 20 mph, with gusts as high as 35 mph. Chance of precipitation is 60%. Little or no snow accumulation expected.
Wednesday
Snow, mainly before 9am. Temperature falling to around 24 by 5pm. Blustery, with a north northwest wind 15 to 20 mph, with gusts as high as 35 mph. Chance of precipitation is 90%. New snow accumulation of less than a half inch possible.
Wednesday Night
Cloudy, then gradually becoming partly cloudy, with a low around 8. Wind chill values as low as 1. Northwest wind 5 to 10 mph, with gusts as high as 20 mph.
Thursday
A 20 percent chance of snow after noon. Partly sunny, with a high near 22. West northwest wind around 5 mph becoming south in the afternoon.
Thursday Night
Snow likely. Cloudy, with a low around 17. South southeast wind around 5 mph becoming north northeast after midnight. Chance of precipitation is 60%.
Friday
A 40 percent chance of snow. Mostly cloudy, with a high near 25.
Friday Night
A 20 percent chance of snow before midnight. Mostly cloudy, with a low around 4.
Saturday
Snow likely, mainly after noon. Mostly cloudy, with a high near 11.
Saturday Night
Partly cloudy, with a low around -10.
Sunday
Sunny and cold, with a high near 6.
Sunday Night
Partly cloudy, with a low around -7.
Monday
Partly sunny, with a high near 20.
Monday Night
Mostly cloudy, with a low around 5.
Tuesday
Partly sunny, with a high near 26.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Byron IL
 42.13°N 89.24°W
Last Update:
12:01 am CST Dec 10, 2025
Forecast Valid:
12am CST Dec 10, 2025-6pm CST Dec 16, 2025
 
Forecast Discussion
 
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Additional Resources

Radar & Satellite Image

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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