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Shannon, IL 7-Day Weather Forecast
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Shannon Weather Forecast
Shannon, IL Weather Forecast Date: 811 PM CDT Sun Sep 13 2026
Weather forecast for Shannon, IL
Tonight Lo: 49°F Lo: 9°C |
Tonight... Mostly clear this evening, then becoming partly cloudy. Lows in the upper 40s. Northwest winds around 5 mph, becoming northeast after midnight. |
Mon Hi: 71°FHi: 22°C Lo: 69°F Lo: 21°C |
Monday... Partly sunny. A chance of showers in the afternoon. Highs in the lower 70s. Southeast winds 10 to 15 mph. Chance of rain 30%. |
Tue Hi: 79°FHi: 26°C Lo: 59°F Lo: 15°C |
Tuesday... Showers, mainly in the morning. More humid with highs in the upper 70s. Southwest winds 10 to 15 mph, becoming west 5 to 10 mph in the afternoon. Chance of rain 80%. |
| Wed Hi: 75°FHi: 24°C Lo: 61°F Lo: 16°C |
Wednesday... Showers, mainly in the morning. Highs in the mid 70s. Chance of rain 80%. |
| Thu Hi: 79°FHi: 26°C Lo: 60°F Lo: 16°C |
Thursday... Mostly cloudy with a chance of showers in the morning, then partly sunny in the afternoon. Highs in the upper 70s. Chance of rain 50%. |
| Fri Hi: 79°FHi: 26°C Lo: 61°F Lo: 16°C |
Friday... Partly sunny with a chance of showers. Highs in the upper 70s. Chance of rain 50%. |
| Sat Hi: 79°FHi: 26°C Lo: 59°F Lo: 15°C |
Saturday... Partly sunny. A chance of showers. Highs in the upper 70s. Chance of rain 50%. |
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