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.

Mostly Cloudy and Breezy

38°F

3°C

Humidity 70%
Wind Speed W 21 G 29 mph
Barometer 29.87 in (1011.6 mb)
Dewpoint 29°F (-2°C)
Visibility 10.00 mi
Wind Chill28°F (-2°C)
Last update 18 Apr 8:54 am CDT
Extended Forecast for

Byron IL

Flood Warning until further notice
Click here for hazard details and duration
Flood Warning until further notice
  •  
    Flood Warning until further notice

    NOW until further notice

    Flood Warning

  • Today

    High: 49 °F

    Partly Sunny
    and Breezy

  • Tonight

    Tonight: Widespread frost after 2am. Otherwise, mostly clear, with a low around 32. Southwest wind 5 to 15 mph, with gusts as high as 25 mph.

    Low: 32 °F

    Mostly Clear
    then Frost

  • Sunday

    Sunday: A 30 percent chance of showers after 1pm. Mostly sunny, with a high near 50. West wind 5 to 15 mph, with gusts as high as 30 mph.

    High: 50 °F

    Partly Sunny
    then Chance
    Showers

  • Sunday Night

    Sunday Night: Widespread frost after 4am. Otherwise, mostly clear, with a low around 28. Northwest wind 5 to 10 mph becoming light north northwest in the evening. Winds could gust as high as 15 mph.

    Low: 28 °F

    Mostly Clear
    then Frost

  • Monday

    Monday: Widespread frost before 8am. Otherwise, sunny, with a high near 55. Light and variable wind becoming south 5 to 10 mph in the morning.

    High: 55 °F

    Frost then
    Sunny

  • Monday Night

    Monday Night: Mostly cloudy, with a low around 45.

    Low: 45 °F

    Mostly Cloudy

  • Tuesday

    Tuesday: Mostly sunny, with a high near 73.

    High: 73 °F

    Mostly Sunny

  • Tuesday Night

    Tuesday Night: Partly cloudy, with a low around 47.

    Low: 47 °F

    Partly Cloudy

Detailed Forecast

Today
Partly sunny, with a high near 49. Breezy, with a west wind around 20 mph, with gusts as high as 30 mph.
Tonight
Widespread frost after 2am. Otherwise, mostly clear, with a low around 32. Southwest wind 5 to 15 mph, with gusts as high as 25 mph.
Sunday
A 30 percent chance of showers after 1pm. Mostly sunny, with a high near 50. West wind 5 to 15 mph, with gusts as high as 30 mph.
Sunday Night
Widespread frost after 4am. Otherwise, mostly clear, with a low around 28. Northwest wind 5 to 10 mph becoming light north northwest in the evening. Winds could gust as high as 15 mph.
Monday
Widespread frost before 8am. Otherwise, sunny, with a high near 55. Light and variable wind becoming south 5 to 10 mph in the morning.
Monday Night
Mostly cloudy, with a low around 45.
Tuesday
Mostly sunny, with a high near 73.
Tuesday Night
Partly cloudy, with a low around 47.
Wednesday
Sunny, with a high near 75.
Wednesday Night
Mostly clear, with a low around 55.
Thursday
Mostly sunny, with a high near 80.
Thursday Night
Showers likely. Mostly cloudy, with a low around 58.
Friday
A chance of showers. Mostly cloudy, with a high near 71.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Byron IL
 42.13°N 89.27°W
Last Update:
6:46 am CDT Apr 18, 2026
Forecast Valid:
9am CDT Apr 18, 2026-6pm CDT Apr 24, 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