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

Rockford, Greater Rockford Airport (KRFD)

Lat: 42.19°NLon: 89.09°WElev: 735ft.

A Few Clouds

12°C

54°F

Humidity 100%
Wind Speed Calm
Barometer 1017.5 mb (30.06 in)
Dewpoint 12°C (54°F)
Visibility 16 km
Last update 11 Sep 4:54 am CDT
Extended Forecast for

Belvidere IL

  • Today

    Today: Patchy fog before 7am. Otherwise, sunny, with a high near 26. East southeast wind 5 to 15 km/h becoming south in the afternoon.

    High: 26 °C

    Patchy Fog
    then Sunny

  • Tonight

    Tonight: Increasing clouds, with a low around 16. South southeast wind 5 to 10 km/h.

    Low: 16 °C

    Increasing
    Clouds

  • Saturday

    Saturday: Mostly sunny, with a high near 29. South wind 10 to 20 km/h becoming west in the afternoon. Winds could gust as high as 30 km/h.

    High: 29 °C

    Mostly Sunny

  • Saturday Night

    Saturday Night: Mostly cloudy, then gradually becoming mostly clear, with a low around 12. North wind 5 to 10 km/h.

    Low: 12 °C

    Decreasing
    Clouds

  • Sunday

    Sunday: A 20 percent chance of showers after 1pm. Partly sunny, with a high near 24. North northeast wind 5 to 10 km/h, with gusts as high as 20 km/h.

    High: 24 °C

    Mostly Sunny
    then Slight
    Chance
    Showers

  • Sunday Night

    Sunday Night: A 40 percent chance of showers. Mostly cloudy, with a low around 12.

    Low: 12 °C

    Chance
    Showers

  • Monday

    Monday: A chance of showers and thunderstorms. Mostly cloudy, with a high near 26. Chance of precipitation is 50%.

    High: 26 °C

    Chance
    T-storms

  • Monday Night

    Monday Night: Showers likely, mainly after 1am. Mostly cloudy, with a low around 18. Breezy.

    Low: 18 °C

    Showers
    Likely and
    Breezy

  • Tuesday

    Tuesday: A chance of showers. Mostly cloudy, with a high near 26.

    High: 26 °C

    Chance
    Showers

Detailed Forecast

Today
Patchy fog before 7am. Otherwise, sunny, with a high near 26. East southeast wind 5 to 15 km/h becoming south in the afternoon.
Tonight
Increasing clouds, with a low around 16. South southeast wind 5 to 10 km/h.
Saturday
Mostly sunny, with a high near 29. South wind 10 to 20 km/h becoming west in the afternoon. Winds could gust as high as 30 km/h.
Saturday Night
Mostly cloudy, then gradually becoming mostly clear, with a low around 12. North wind 5 to 10 km/h.
Sunday
A 20 percent chance of showers after 1pm. Partly sunny, with a high near 24. North northeast wind 5 to 10 km/h, with gusts as high as 20 km/h.
Sunday Night
A 40 percent chance of showers. Mostly cloudy, with a low around 12.
Monday
A chance of showers and thunderstorms. Mostly cloudy, with a high near 26. Chance of precipitation is 50%.
Monday Night
Showers likely, mainly after 1am. Mostly cloudy, with a low around 18. Breezy.
Tuesday
A chance of showers. Mostly cloudy, with a high near 26.
Tuesday Night
Showers likely, mainly after 1am. Mostly cloudy, with a low around 13.
Wednesday
A chance of showers. Mostly cloudy, with a high near 23.
Wednesday Night
Showers likely. Mostly cloudy, with a low around 14.
Thursday
A chance of showers. Partly sunny, with a high near 26.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Belvidere IL
 42.25°N 88.86°W
Last Update:
3:10 am CDT Sep 11, 2026
Forecast Valid:
5am CDT Sep 11, 2026-6pm CDT Sep 17, 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

National Digital Forecast Database Maximum Temperature Forecast

High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation