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City of Carthage, ILCarthage, IL 7-Day Weather Forecast
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Carthage Weather Forecast
Carthage, IL Weather Forecast Date: 236 AM CDT Fri Sep 18 2026
Weather forecast for Carthage, IL
Today Hi: 81°FHi: 27°C Lo: 70°F Lo: 21°C |
Today... Mostly cloudy after midnight, then a slight chance of showers and thunderstorms this morning. Mostly sunny this afternoon. Patchy fog this morning. Humid with highs in the lower 80s. Northeast winds 5 to 10 mph, becoming east this afternoon. Chance of rain 20%. |
Sat Hi: 89°FHi: 32°C Lo: 69°F Lo: 21°C |
Saturday... Mostly cloudy. A chance of showers in the afternoon. Humid with highs in the upper 80s. South winds 5 to 10 mph. Chance of rain 50%. |
| Sun Hi: 79°FHi: 26°C Lo: 60°F Lo: 16°C |
Sunday... Showers in the morning, then showers likely with a chance of thunderstorms in the afternoon. Humid with highs in the upper 70s. North winds 5 to 10 mph. Chance of rain 80%. |
Mon Hi: 69°FHi: 21°C Lo: 51°F Lo: 11°C |
Monday... Showers likely, mainly in the morning. Not as warm with highs in the upper 60s. Chance of rain 70%. |
Tue Hi: 65°FHi: 18°C Lo: 51°F Lo: 11°C |
Tuesday... Mostly cloudy. Highs in the mid 60s. Lows in the lower 50s. |
Wed Hi: 69°FHi: 21°C Lo: 51°F Lo: 11°C |
Wednesday... Mostly sunny. Highs in the upper 60s. |
| Thu Hi: 71°FHi: 22°C |
Thursday... Mostly sunny. Highs in the lower 70s. |
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