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City of Mt. Vernon, IllinoisMount Vernon, IL 7-Day Weather Forecast
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Mount Vernon Weather Forecast
Mount Vernon, IL Weather Forecast Date: 602 PM CDT Thu Sep 24 2026
Weather forecast for Mount Vernon, IL
Tonight Lo: 59°F Lo: 15°C |
Tonight... Mostly cloudy. Lows in the upper 50s. Northeast winds around 5 mph. |
Fri Hi: 79°FHi: 26°C Lo: 55°F Lo: 13°C |
Friday... Partly sunny. Highs in the upper 70s. Northeast winds around 5 mph. |
| Sat Hi: 75°FHi: 24°C Lo: 59°F Lo: 15°C |
Saturday... Partly sunny in the morning, then becoming mostly cloudy. Highs in the mid 70s. Northeast winds around 5 mph. |
| Sun Hi: 79°FHi: 26°C Lo: 59°F Lo: 15°C |
Sunday... Mostly cloudy in the morning, then becoming mostly sunny. Highs in the upper 70s. |
Mon Hi: 79°FHi: 26°C Lo: 59°F Lo: 15°C |
Monday... Mostly clear. Highs in the upper 70s. Lows in the upper 50s. |
| Tue Hi: 81°FHi: 27°C Lo: 65°F Lo: 18°C |
Tuesday... Mostly sunny. Highs in the lower 80s. |
Wed Hi: 81°FHi: 27°C Lo: 65°F Lo: 18°C |
Wednesday... Mostly cloudy with a 50% chance of showers. Highs in the lower 80s. Lows in the mid 60s. |
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