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Belvidere, Illinois

Current conditions and the National Weather Service 7-day forecast for Belvidere, Illinois — temperature, rain chance, wind, radar and active alerts.

Saturday Aug 29 night: a low around 68°F. Sunday Aug 30: a high near 85°F and a low around 70°F. The wettest day looks like Monday Aug 31, near 0.04 in. Highs over the period run 85°F to 91°F.

National Weather Service forecast for Belvidere, Illinois
DayHighLowPrecip
Saturday Aug 2968°
Sunday Aug 3085°70°0.02 in
Monday Aug 3189°72°0.04 in
Tuesday Sep 191°73°
Wednesday Sep 291°68°
Thursday Sep 386°65°
Friday Sep 486°65°
Saturday Sep 586°

NOAA NWS NDFD 2.5 km, run 2026-08-30 00:00 UTC · days are local time in America/Chicago. The live page updates continuously.

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