Heat Across the Center of the Nation; Severe Thunderstorms Across the Great Lakes and Ohio Valley

Heat expands across the Desert Southwest, Plains, Mississippi Valley and Midwest into Monday. Fire weather concerns continue for portions of the Intermountain West. Active monsoonal moisture fuels thunderstorms over the Southwest with possible flash flooding. Tropical cyclone Fausto in the Pacific, should weaken as it approaches Hawaii; Dangerous surf, swells and rip currents are expected. Read More >

Hazardous Weather Conditions

Current conditions at

Rockford, Greater Rockford Airport (KRFD)

Lat: 42.19°NLon: 89.09°WElev: 735ft.

Fog/Mist

78°F

26°C

Humidity 97%
Wind Speed S 8 mph
Barometer 29.86 in (1010.2 mb)
Dewpoint 77°F (25°C)
Visibility 2.00 mi
Heat Index81°F (27°C)
Last update 27 Jul 12:54 am CDT
Extended Forecast for

Byron IL

  • Overnight

    Overnight: A 10 percent chance of showers and thunderstorms after 5am.  Mostly cloudy, with a low around 74. South wind around 5 mph, with gusts as high as 10 mph.

    Low: 74 °F

    Slight Chance
    T-storms

  • Monday

    Monday: A chance of showers and thunderstorms before 1pm, then a slight chance of showers and thunderstorms after 3pm.  Mostly sunny, with a high near 91. Heat index values as high as 105. Southeast wind 10 to 15 mph becoming west in the afternoon. Winds could gust as high as 20 mph.  Chance of precipitation is 50%.

    High: 91 °F

    Chance
    T-storms then
    Slight Chance
    T-storms

  • Monday Night

    Monday Night: A 20 percent chance of showers and thunderstorms before 1am.  Partly cloudy, with a low around 69. West wind 5 to 10 mph becoming north northeast after midnight. Winds could gust as high as 15 mph.

    Low: 69 °F

    Slight Chance
    T-storms

  • Tuesday

    Tuesday: Sunny, with a high near 82. North northeast wind around 10 mph, with gusts as high as 15 mph.

    High: 82 °F

    Sunny

  • Tuesday Night

    Tuesday Night: Mostly clear, with a low around 61. North northeast wind 5 to 10 mph becoming light east  in the evening.

    Low: 61 °F

    Mostly Clear

  • Wednesday

    Wednesday: Sunny, with a high near 84.

    High: 84 °F

    Sunny

  • Wednesday Night

    Wednesday Night: Mostly clear, with a low around 64.

    Low: 64 °F

    Mostly Clear

  • Thursday

    Thursday: Sunny, with a high near 85.

    High: 85 °F

    Sunny

  • Thursday Night

    Thursday Night: Mostly cloudy, with a low around 65.

    Low: 65 °F

    Mostly Cloudy

Detailed Forecast

Overnight
A 10 percent chance of showers and thunderstorms after 5am. Mostly cloudy, with a low around 74. South wind around 5 mph, with gusts as high as 10 mph.
Monday
A chance of showers and thunderstorms before 1pm, then a slight chance of showers and thunderstorms after 3pm. Mostly sunny, with a high near 91. Heat index values as high as 105. Southeast wind 10 to 15 mph becoming west in the afternoon. Winds could gust as high as 20 mph. Chance of precipitation is 50%.
Monday Night
A 20 percent chance of showers and thunderstorms before 1am. Partly cloudy, with a low around 69. West wind 5 to 10 mph becoming north northeast after midnight. Winds could gust as high as 15 mph.
Tuesday
Sunny, with a high near 82. North northeast wind around 10 mph, with gusts as high as 15 mph.
Tuesday Night
Mostly clear, with a low around 61. North northeast wind 5 to 10 mph becoming light east in the evening.
Wednesday
Sunny, with a high near 84.
Wednesday Night
Mostly clear, with a low around 64.
Thursday
Sunny, with a high near 85.
Thursday Night
Mostly cloudy, with a low around 65.
Friday
A chance of showers after 1pm. Mostly cloudy, with a high near 81.
Friday Night
A chance of showers. Partly cloudy, with a low around 64.
Saturday
A chance of showers. Mostly sunny, with a high near 82.
Saturday Night
Mostly clear, with a low around 62.
Sunday
Sunny, with a high near 85.
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ABOUT THIS FORECAST

 
Point Forecast:
Byron IL
 42.13°N 89.24°W
12:06 am CDT Jul 27, 2026
1am CDT Jul 27, 2026-6pm CDT Aug 2, 2026
 
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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