Thunderstorms and Heavy Rain in the Mid-South; Heat Continues in the Southeast and Southwest

Severe thunderstorms and heavy rain are expected across portions of the mid-Mississippi Valley into the Ohio Valley and portions of Arizona. Dangerous heat persists in the South and Southeast while building into the Southwest. Overnight lows will be so warm that, when combined with oppressive dew points, little-to-no relief from the scorching daytime highs will be available. Read More >

Hazardous Weather Conditions

Current conditions at

Rockford, Greater Rockford Airport (KRFD)

Lat: 42.19°NLon: 89.09°WElev: 735ft.

Mostly Cloudy

64°F

18°C

Humidity 96%
Wind Speed Calm
Barometer 29.94 in (1013.6 mb)
Dewpoint 63°F (17°C)
Visibility 10.00 mi
Last update 19 Aug 1:54 am CDT
Extended Forecast for

Belvidere IL

  • Overnight

    Overnight: Areas of fog.  Otherwise, mostly cloudy, with a low around 63. West wind around 5 mph becoming calm.

    Low: 63 °F

    Areas Fog

  • Wednesday

    Wednesday: Areas of fog before 9am.  Otherwise, partly sunny, with a high near 79. Calm wind becoming north around 5 mph in the afternoon.

    High: 79 °F

    Areas Fog
    then Partly
    Sunny

  • Wednesday Night

    Wednesday Night: Partly cloudy, with a low around 57. Northeast wind around 5 mph becoming calm  after midnight.

    Low: 57 °F

    Partly Cloudy

  • Thursday

    Thursday: Sunny, with a high near 80. Calm wind.

    High: 80 °F

    Sunny

  • Thursday Night

    Thursday Night: Partly cloudy, with a low around 60. Calm wind becoming south around 5 mph.

    Low: 60 °F

    Partly Cloudy

  • Friday

    Friday: A 40 percent chance of showers and thunderstorms.  Mostly sunny, with a high near 79.

    High: 79 °F

    Chance
    Showers

  • Friday Night

    Friday Night: A 20 percent chance of showers and thunderstorms before 1am.  Partly cloudy, with a low around 61.

    Low: 61 °F

    Slight Chance
    T-storms

  • Saturday

    Saturday: Sunny, with a high near 79.

    High: 79 °F

    Sunny

  • Saturday Night

    Saturday Night: Mostly clear, with a low around 57.

    Low: 57 °F

    Mostly Clear

Detailed Forecast

Overnight
Areas of fog. Otherwise, mostly cloudy, with a low around 63. West wind around 5 mph becoming calm.
Wednesday
Areas of fog before 9am. Otherwise, partly sunny, with a high near 79. Calm wind becoming north around 5 mph in the afternoon.
Wednesday Night
Partly cloudy, with a low around 57. Northeast wind around 5 mph becoming calm after midnight.
Thursday
Sunny, with a high near 80. Calm wind.
Thursday Night
Partly cloudy, with a low around 60. Calm wind becoming south around 5 mph.
Friday
A 40 percent chance of showers and thunderstorms. Mostly sunny, with a high near 79.
Friday Night
A 20 percent chance of showers and thunderstorms before 1am. Partly cloudy, with a low around 61.
Saturday
Sunny, with a high near 79.
Saturday Night
Mostly clear, with a low around 57.
Sunday
Mostly sunny, with a high near 76.
Sunday Night
Partly cloudy, with a low around 55.
Monday
Mostly sunny, with a high near 76.
Monday Night
Partly cloudy, with a low around 58.
Tuesday
Mostly sunny, with a high near 79.
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ABOUT THIS FORECAST

 
Point Forecast:
Belvidere IL
 42.25°N 88.86°W
1:21 am CDT Aug 19, 2026
2am CDT Aug 19, 2026-6pm CDT Aug 25, 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