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City of Belvidere, ILBelvidere, IL 7-Day Weather Forecast
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Belvidere Weather Forecast
Belvidere, IL Weather Forecast Date: 836 PM CDT Mon Sep 14 2026
Weather forecast for Belvidere, IL
Tonight Lo: 61°F Lo: 16°C |
Tonight... Mostly cloudy. A slight chance of showers and thunderstorms in the evening, then showers with thunderstorms likely after midnight. Not as cool. Lows in the lower 60s. South winds 15 to 20 mph with gusts up to 25 mph. Chance of precipitation 90%. |
Tue Hi: 75°FHi: 24°C Lo: 59°F Lo: 15°C |
Tuesday... Mostly cloudy. Showers in the morning. A chance of thunderstorms. A chance of showers in the afternoon. More humid with highs in the mid 70s. Southwest winds 10 to 15 mph with gusts up to 25 mph, becoming west 5 to 10 mph in the afternoon. Chance of precipitation 90%. |
| Wed Hi: 71°FHi: 22°C Lo: 65°F Lo: 18°C |
Wednesday... Mostly cloudy. Showers likely in the morning. A chance of thunderstorms. A chance of showers in the afternoon. Highs in the lower 70s. East winds 5 to 10 mph. Chance of precipitation 60%. |
| Thu Hi: 75°FHi: 24°C Lo: 61°F Lo: 16°C |
Thursday... Mostly cloudy. Showers likely with a chance of thunderstorms in the morning. Highs in the mid 70s. Chance of precipitation 60%. |
Fri Hi: 79°FHi: 26°C Lo: 65°F Lo: 18°C |
Friday... Mostly cloudy with a 40% chance of showers. Highs in the upper 70s. |
| Sat Hi: 81°FHi: 27°C Lo: 61°F Lo: 16°C |
Saturday... Mostly cloudy. A chance of showers in the morning, then showers likely in the afternoon. Highs in the lower 80s. Chance of precipitation 60%. |
| Sun Hi: 75°FHi: 24°C Lo: 59°F Lo: 15°C |
Sunday... Mostly cloudy with a 40% chance of showers. Highs in the mid 70s. |
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