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Lost Lake, IL 7-Day Weather Forecast
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Lost Lake Weather Forecast
Lost Lake, IL Weather Forecast Date: 126 PM CDT Wed Sep 23 2026
Weather forecast for Lost Lake, IL
Today Hi: 65°FHi: 18°C Lo: 55°F Lo: 13°C |
This Afternoon... Mostly cloudy with scattered sprinkles. Near steady temperature in the mid 60s. Northeast winds around 10 mph with gusts up to 20 mph. |
Thu Hi: 70°FHi: 21°C Lo: 59°F Lo: 15°C |
Thursday... Mostly sunny. Highs around 70. East winds around 5 mph. |
| Fri Hi: 69°FHi: 21°C Lo: 55°F Lo: 13°C |
Friday... Partly sunny. Highs in the upper 60s. East winds around 5 mph. |
| Sat Hi: 69°FHi: 21°C Lo: 55°F Lo: 13°C |
Saturday... Mostly cloudy. Lows in the mid 50s. Highs in the upper 60s. |
| Sun Hi: 69°FHi: 21°C Lo: 55°F Lo: 13°C |
Sunday... Mostly cloudy. Lows in the mid 50s. Highs in the upper 60s. |
| Sun Hi: 69°FHi: 21°C Lo: 55°F Lo: 13°C |
Sunday... Mostly cloudy. Lows in the mid 50s. Highs in the upper 60s. |
Mon Hi: 71°FHi: 22°C Lo: 55°F Lo: 13°C |
Monday... Partly cloudy. Lows in the mid 50s. Highs in the lower 70s. |
| Mon Hi: 71°FHi: 22°C Lo: 55°F Lo: 13°C |
Monday... Partly cloudy. Lows in the mid 50s. Highs in the lower 70s. |
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