Lower Stump Lake, IL 7-Day Weather Forecast
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Lower Stump Lake Weather Forecast


Lower Stump Lake, IL Weather Forecast Date: 1028 PM CDT Sun Aug 09 2026
Weather forecast for Lower Stump Lake, IL
| Tonight Lo: 75°F Lo: 24°C |
Tonight... Mostly clear late this evening, then partly cloudy with a slight chance of showers and thunderstorms. Lows in the mid 70s. South winds 5 to 10 mph with gusts up to 20 mph. Chance of rain 20%. |
| Mon Hi: 91°FHi: 33°C Lo: 75°F Lo: 24°C |
Monday... Partly sunny. A chance of showers and thunderstorms in the morning. Humid with highs in the lower 90s. Southwest winds 5 to 10 mph. Chance of rain 30%. Heat index values up to 106 in the afternoon. |
| Tue Hi: 95°FHi: 35°C Lo: 75°F Lo: 24°C |
Tuesday... Sunny with highs in the mid 90s. Southwest winds 5 to 10 mph. Heat index values up to 109 in the afternoon. |
| Wed Hi: 91°FHi: 33°C Lo: 71°F Lo: 22°C |
Wednesday... Mostly sunny with a slight chance of thunderstorms. A chance of showers, mainly in the morning. Highs in the lower 90s. Chance of rain 40%. Heat index values up to 105. |
| Thu Hi: 85°FHi: 29°C Lo: 69°F Lo: 21°C |
Thursday... Becoming mostly cloudy in the afternoon. A chance of thunderstorms. Showers likely, mainly in the morning. Highs in the mid 80s. Chance of rain 60%. |
| Fri Hi: 81°FHi: 27°C Lo: 69°F Lo: 21°C |
Friday... Mostly cloudy with a slight chance of thunderstorms. A chance of showers, mainly in the morning. Highs in the lower 80s. Chance of rain 50%. |
| Sat Hi: 85°FHi: 29°C Lo: 69°F Lo: 21°C |
Saturday... Partly sunny with a slight chance of thunderstorms. A chance of showers, mainly in the morning. Highs in the mid 80s. Chance of rain 50%. |
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