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Summer 2025 Climate Summary for Central Illinois
August 2025 Monthly Climate Summary

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Central Illinois Forecast

A weak storm system will move across the region on Friday. While rain chances have increased over a larger area, they still remain fairly low (about 20% chance), focused north of I-72/Danville in the morning and south of there in the afternoon. Any rainfall will be light, generally only a few hundredths of an inch. Clouds and showers will keep much of the area on the cool side, mainly highs in the mid to upper 60s, though 70s are more likely south of I-70. The weekend looks pleasant, with fair weather, highs in the 70s, and lows in the 40s.