Weather in Belvidere, IL
Updated 2026-09-26 12:30 local time · ZIP codes 61008
Overcast
No government weather alerts were returned for this location at the latest update.
Next hours
63°12% rain64°10% rain65°11% rain66°10% rain65°12% rain64°13% rain62°18% rain
57°17% rain56°16% rain54°15% rain53°13% rain53°13% rain3-day weather forecast
Weather details
Sunrise, sunset and moon
Key weather changes ahead
Weather insights for today
Rain chance stays relatively low over the next 12 hours (up to 18%).
It feels like 57°F with winds near 8 mph.
66°F, 10% rain chance and 6 mph wind.
Visibility is around 6 mi; gusts may reach 13 mph.
Current temperature is 63°F, wind 8 mph, rain chance up to 18%.
UV index is 5. Sunscreen and sunglasses are sensible for longer outdoor time.
Local weather characteristics in Belvidere
Illinois has four distinct seasons with hot, humid summers, cold winters, strong frontal changes and frequent spring and summer thunderstorms.
Belvidere is part of the Midwest weather region. The forecast point is near 42.26°N latitude and 88.84°W longitude. Local temperature, wind and precipitation can still differ from nearby places, especially where terrain, coastlines or urban development create small-scale weather changes.
Belvidere weather today
Overcast and 63°F in Belvidere, IL. Today's high is 66°F with a 13% rain chance. Winds are around 8 mph with gusts near 9 mph. Relative humidity is 51%, pressure is 30.19 inHg, and visibility is about 6 miles.
Tonight and tomorrow in Belvidere
Sunrise is at 06:47 AM and sunset is at 06:46 PM. Tomorrow's forecast calls for Overcast with a high near 68°F and a low near 52°F. The maximum rain chance is 10%.