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

Hazardous Weather Conditions

Current conditions at

Rockford, Greater Rockford Airport (KRFD)

Lat: 42.19°NLon: 89.09°WElev: 735ft.

Fair

7°F

-14°C

Humidity 70%
Wind Speed W 7 mph
Barometer 30.14 in (1022.1 mb)
Dewpoint -1°F (-18°C)
Visibility 10.00 mi
Wind Chill-5°F (-21°C)
Last update 17 Mar 7:54 am CDT
Extended Forecast for

Byron IL

  • Today

    Today: Increasing clouds, with a high near 21. Wind chill values as low as -12. West northwest wind 5 to 10 mph becoming southwest in the afternoon.

    High: 21 °F

    Increasing
    Clouds

  • Tonight

    Tonight: Snow, mainly between 10pm and 4am. Temperature falling to near 18 by 8pm, then rising to around 24 during the remainder of the night. South wind 10 to 15 mph, with gusts as high as 20 mph. Chance of precipitation is 100%. New snow accumulation of 1 to 2 inches possible.

    Low: 18 °F⇑

    Snow

  • Wednesday

    Wednesday: A 30 percent chance of snow before 7am. Partly sunny, with a high near 38. South wind around 10 mph becoming west southwest in the afternoon. Winds could gust as high as 15 mph.

    High: 38 °F

    Chance Snow
    then Mostly
    Sunny

  • Wednesday Night

    Wednesday Night: A 20 percent chance of rain after 1am. Mostly cloudy, with a low around 32. South southwest wind around 5 mph.

    Low: 32 °F

    Mostly Cloudy
    then Slight
    Chance Rain

  • Thursday

    Thursday: Mostly sunny, with a high near 47. South wind around 5 mph becoming northwest in the afternoon. Winds could gust as high as 10 mph.

    High: 47 °F

    Mostly Sunny

  • Thursday Night

    Thursday Night: Mostly cloudy, with a low around 34.

    Low: 34 °F

    Mostly Cloudy

  • Friday

    Friday: Mostly cloudy, with a high near 58.

    High: 58 °F

    Mostly Cloudy

  • Friday Night

    Friday Night: Mostly cloudy, with a low around 38.

    Low: 38 °F

    Mostly Cloudy

  • Saturday

    Saturday: Mostly sunny, with a high near 64.

    High: 64 °F

    Mostly Sunny

Detailed Forecast

Today
Increasing clouds, with a high near 21. Wind chill values as low as -12. West northwest wind 5 to 10 mph becoming southwest in the afternoon.
Tonight
Snow, mainly between 10pm and 4am. Temperature falling to near 18 by 8pm, then rising to around 24 during the remainder of the night. South wind 10 to 15 mph, with gusts as high as 20 mph. Chance of precipitation is 100%. New snow accumulation of 1 to 2 inches possible.
Wednesday
A 30 percent chance of snow before 7am. Partly sunny, with a high near 38. South wind around 10 mph becoming west southwest in the afternoon. Winds could gust as high as 15 mph.
Wednesday Night
A 20 percent chance of rain after 1am. Mostly cloudy, with a low around 32. South southwest wind around 5 mph.
Thursday
Mostly sunny, with a high near 47. South wind around 5 mph becoming northwest in the afternoon. Winds could gust as high as 10 mph.
Thursday Night
Mostly cloudy, with a low around 34.
Friday
Mostly cloudy, with a high near 58.
Friday Night
Mostly cloudy, with a low around 38.
Saturday
Mostly sunny, with a high near 64.
Saturday Night
Partly cloudy, with a low around 40.
Sunday
Mostly cloudy, with a high near 56.
Sunday Night
Mostly cloudy, with a low around 28.
Monday
Partly sunny, with a high near 45.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Byron IL
 42.13°N 89.27°W
Last Update:
5:56 am CDT Mar 17, 2026
Forecast Valid:
8am CDT Mar 17, 2026-6pm CDT Mar 23, 2026
 
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Additional Resources

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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