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Simpson Lake Weather Forecast
Simpson Lake, IL Weather Forecast Date: 127 PM CDT Wed Sep 23 2026
Weather forecast for Simpson Lake, IL
Today Hi: 70°FHi: 21°C Lo: 59°F Lo: 15°C |
This Afternoon... Partly sunny. Near steady temperature around 70. North winds 5 to 10 mph. |
| Thu Hi: 75°FHi: 24°C Lo: 59°F Lo: 15°C |
Thursday... Partly sunny. Highs in the mid 70s. Northeast winds around 5 mph. |
Fri Hi: 79°FHi: 26°C Lo: 55°F Lo: 13°C |
Friday... Mostly sunny. Highs in the upper 70s. Northeast winds around 5 mph. |
| Sat Hi: 79°FHi: 26°C Lo: 55°F Lo: 13°C |
Saturday... Mostly cloudy. Highs in the upper 70s. Lows in the mid 50s. |
| Sun Hi: 79°FHi: 26°C Lo: 55°F Lo: 13°C |
Sunday... Mostly cloudy. Highs in the upper 70s. Lows in the mid 50s. |
| Sun Hi: 79°FHi: 26°C Lo: 55°F Lo: 13°C |
Sunday... Mostly cloudy. Highs in the upper 70s. Lows in the mid 50s. |
Mon Hi: 81°FHi: 27°C Lo: 59°F Lo: 15°C |
Monday... Partly cloudy. Lows in the mid 50s. Highs in the lower 80s. |
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