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

75°F

24°C

Humidity 69%
Wind Speed SE 15 G 25 mph
Barometer 29.82 in (1009.4 mb)
Dewpoint 64°F (18°C)
Visibility 10.00 mi
Last update 17 Apr 11:54 am CDT
Extended Forecast for

Byron IL

Flood Warning until further notice
Flood Watch April 17, 03:00pm until April 18, 05:00am
Click here for hazard details and duration
Flood Warning until further notice
Flood Watch
  •  
    Flood Warning until further notice

    NOW until further notice

    Flood Warning

  • This Afternoon

    High: 81 °F

    Chance
    T-storms and
    Breezy

  • Tonight

    Tonight: Showers and thunderstorms before midnight, then a chance of showers. Low around 39. Breezy, with a south wind 15 to 20 mph becoming northwest after midnight. Winds could gust as high as 30 mph. Chance of precipitation is 90%. New precipitation amounts between a half and three quarters of an inch possible.

    Low: 39 °F

    T-storms and
    Breezy then
    Chance
    Showers

  • Saturday

    Saturday: Mostly sunny, with a high near 48. Breezy, with a west northwest wind 15 to 20 mph, with gusts as high as 30 mph.

    High: 48 °F

    Mostly Sunny
    and Breezy

  • Saturday Night

    Saturday Night: Areas of frost after 3am. Otherwise, mostly clear, with a low around 31. West northwest wind 5 to 15 mph, with gusts as high as 25 mph.

    Low: 31 °F

    Mostly Clear
    then Areas
    Frost

  • Sunday

    Sunday: Areas of frost before 8am. Otherwise, mostly sunny, with a high near 51. West northwest wind 5 to 15 mph, with gusts as high as 25 mph.

    High: 51 °F

    Areas Frost
    then Mostly
    Sunny

  • Sunday Night

    Sunday Night: Widespread frost after 2am. Otherwise, mostly clear, with a low around 30.

    Low: 30 °F

    Mostly Clear
    then Frost

  • Monday

    Monday: Widespread frost, mainly before 8am. Otherwise, sunny, with a high near 58.

    High: 58 °F

    Frost then
    Sunny

  • Monday Night

    Monday Night: Partly cloudy, with a low around 46.

    Low: 46 °F

    Partly Cloudy

Detailed Forecast

This Afternoon
A 50 percent chance of showers and thunderstorms, mainly after 4pm. Partly sunny, with a high near 81. Breezy, with a south wind 20 to 25 mph, with gusts as high as 35 mph.
Tonight
Showers and thunderstorms before midnight, then a chance of showers. Low around 39. Breezy, with a south wind 15 to 20 mph becoming northwest after midnight. Winds could gust as high as 30 mph. Chance of precipitation is 90%. New precipitation amounts between a half and three quarters of an inch possible.
Saturday
Mostly sunny, with a high near 48. Breezy, with a west northwest wind 15 to 20 mph, with gusts as high as 30 mph.
Saturday Night
Areas of frost after 3am. Otherwise, mostly clear, with a low around 31. West northwest wind 5 to 15 mph, with gusts as high as 25 mph.
Sunday
Areas of frost before 8am. Otherwise, mostly sunny, with a high near 51. West northwest wind 5 to 15 mph, with gusts as high as 25 mph.
Sunday Night
Widespread frost after 2am. Otherwise, mostly clear, with a low around 30.
Monday
Widespread frost, mainly before 8am. Otherwise, sunny, with a high near 58.
Monday Night
Partly cloudy, with a low around 46.
Tuesday
Mostly sunny, with a high near 73.
Tuesday Night
Partly cloudy, with a low around 50.
Wednesday
Sunny, with a high near 75.
Wednesday Night
Partly cloudy, with a low around 52.
Thursday
Mostly sunny, with a high near 78.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Byron IL
 42.13°N 89.27°W
Last Update:
11:01 am CDT Apr 17, 2026
Forecast Valid:
12pm CDT Apr 17, 2026-6pm CDT Apr 23, 2026
 
Forecast Discussion
 
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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