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City of Oregon, IllinoisOregon, IL 7-Day Weather Forecast
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Oregon Weather Forecast
Oregon, IL Weather Forecast Date: 111 AM CDT Thu Sep 03 2026
Weather forecast for Oregon, IL
Tonight Lo: 75°F Lo: 24°C |
Tonight... Mostly cloudy. A slight chance of showers and thunderstorms. Near steady temperature in the mid 70s. Southwest winds around 5 mph. Chance of precipitation 20%. |
Thu Hi: 90°FHi: 32°C Lo: 71°F Lo: 22°C |
Thursday... Mostly cloudy. A slight chance of showers and thunderstorms early in the morning. A slight chance of showers and thunderstorms in the afternoon. Humid with highs around 90. Southwest winds 5 to 10 mph. Chance of precipitation 20%. |
| Fri Hi: 89°FHi: 32°C Lo: 70°F Lo: 21°C |
Friday... Partly cloudy. A slight chance of showers and thunderstorms in the morning. Humid with highs in the upper 80s. South winds around 5 mph. Chance of precipitation 20%. |
| Sat Hi: 85°FHi: 29°C Lo: 65°F Lo: 18°C |
Saturday... Partly cloudy with a slight chance of showers and thunderstorms. Highs in the mid 80s. Chance of precipitation 20%. |
Sun Hi: 85°FHi: 29°C Lo: 65°F Lo: 18°C |
Sunday... Mostly cloudy. A slight chance of showers in the morning. Highs in the mid 80s. Chance of precipitation 20%. |
Labor Day Hi: 81°FHi: 27°C Lo: 65°F Lo: 18°C |
Labor Day... Partly cloudy. Highs in the lower 80s. |
| Tue Hi: 81°FHi: 27°C Lo: 69°F Lo: 21°C |
Tuesday... Mostly cloudy in the morning, then becoming partly cloudy. Highs in the lower 80s. |
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