Weather forecast for: Belvidere IL
Last Update: 1:31 pm CDT Sep 10, 2026
This Afternoon: Mostly sunny, with a high near 78. Northwest wind around 5 mph.
Tonight: Patchy fog after 2am. Otherwise, mostly clear, with a low around 54. North wind around 5 mph becoming calm.
Friday: Patchy fog before 8am. Otherwise, sunny, with a high near 79. Light and variable wind becoming south 5 to 10 mph in the morning.
Friday Night: Increasing clouds, with a low around 60. South wind around 5 mph.
Saturday: Partly sunny, with a high near 82. Southwest wind 5 to 10 mph, with gusts as high as 15 mph.
Saturday Night: Partly cloudy, with a low around 56.
Sunday: A 20 percent chance of showers after 1pm. Mostly sunny, with a high near 75.
Sunday Night: A chance of showers after 1am. Partly cloudy, with a low around 55.
Monday: A chance of showers before 1pm. Partly sunny, with a high near 78.
Monday Night: Showers likely, mainly after 1am. Mostly cloudy, with a low around 64.
Tuesday: A chance of showers. Mostly cloudy, with a high near 78.
Tuesday Night: A chance of showers. Mostly cloudy, with a low around 56.
Wednesday: A chance of showers. Mostly cloudy, with a high near 71.
WeatherWorld.com
City of Belvidere, IL
