Weather WorldLower Flat Lake, IL 7-Day Weather Forecast
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Lower Flat Lake Weather Forecast
Lower Flat Lake, IL Weather Forecast Date: 1149 PM CDT Tue Oct 20 2026
Weather forecast for Lower Flat Lake, IL
Tonight Lo: 45°F Lo: 7°C |
Tonight... Clear. Lows in the mid 40s. Light and variable winds, becoming southeast around 5 mph. |
Wed Hi: 75°FHi: 24°C Lo: 49°F Lo: 9°C |
Wednesday... Sunny. Highs in the mid 70s. South winds around 5 mph, becoming west in the afternoon. |
| Thu Hi: 75°FHi: 24°C Lo: 45°F Lo: 7°C |
Thursday... Sunny. Highs in the mid 70s. Northeast winds around 5 mph. |
| Fri Hi: 75°FHi: 24°C Lo: 49°F Lo: 9°C |
Friday... Sunny. Highs in the mid 70s. |
| Sat Hi: 79°FHi: 26°C Lo: 50°F Lo: 10°C |
Saturday... Mostly sunny. Highs in the upper 70s. |
| Sun Hi: 79°FHi: 26°C Lo: 49°F Lo: 9°C |
Sunday... Mostly sunny. Highs in the upper 70s. |
Mon Hi: 71°FHi: 22°C Lo: 49°F Lo: 9°C |
Monday... Mostly cloudy. Highs in the lower 70s. Lows in the upper 40s. |
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