Weather WorldMarietta, IL 7-Day Weather Forecast
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Marietta Weather Forecast
Marietta, IL Weather Forecast Date: 232 PM CDT Sun Sep 27 2026
Weather forecast for Marietta, IL
Today Hi: 71°FHi: 22°C Lo: 51°F Lo: 11°C |
This Afternoon... Mostly cloudy. Near steady temperature in the lower 70s. Northeast winds around 5 mph. |
Mon Hi: 75°FHi: 24°C Lo: 55°F Lo: 13°C |
Monday... Sunny. Highs in the mid 70s. Northeast winds around 5 mph. |
| Tue Hi: 79°FHi: 26°C Lo: 65°F Lo: 18°C |
Tuesday... Mostly sunny. Highs in the upper 70s. Southeast winds around 5 mph. |
| Wed Hi: 79°FHi: 26°C Lo: 69°F Lo: 21°C |
Wednesday... Mostly cloudy. Lows in the mid 60s. Highs in the upper 70s. |
Thu Hi: 75°FHi: 24°C Lo: 59°F Lo: 15°C |
Thursday... Showers likely. Highs in the mid 70s. Chance of rain 70%. |
| Fri Hi: 65°FHi: 18°C Lo: 51°F Lo: 11°C |
Friday... A chance of showers in the morning. Mostly sunny. Highs in the mid 60s. Chance of rain 50%. |
| Sat Hi: 65°FHi: 18°C |
Saturday... Mostly sunny. Highs in the mid 60s. |
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