10-Day Weather Forecast - Illiopolis, IL

A chance of thunderstorms. Rain windy with highs in the upper 60s. Temperature falling into the upper 40s in the afternoon. South winds 10 to 15 mph with gusts up to 25 mph increasing to west 20 to 30 mph with gusts up to 40 mph in the afternoon. Chance of rain near 100 percent.

Mostly cloudy and windy. Much cooler with lows around 15. West winds 25 to 30 mph with gusts up to 45 mph. Wind chill values as low as 4 below after midnight.

Mostly cloudy in the morning then becoming partly sunny. Windy and much cooler with highs in the mid 20s. Northwest winds 20 to 30 mph with gusts up to 45 mph. Wind chill values as low as 5 below.

Partly cloudy in the evening then becoming mostly clear. Lows around 13. Northwest winds 15 to 20 mph with gusts up to 30 mph. Wind chill values as low as 2 below.

Partly cloudy. Highs around 30. Lows in the mid 20s. Wind chill values as low as zero.

Partly cloudy. Highs around 30. Lows in the mid 20s. Wind chill values as low as zero.

Mostly cloudy. Highs in the upper 30s. Lows in the lower 20s.

Mostly cloudy. Highs in the upper 30s. Lows in the lower 20s.

Partly cloudy. Highs in the lower 30s. Lows 10 to 15.

Partly cloudy. Highs in the lower 30s. Lows 10 to 15.

Partly cloudy. Highs in the lower 30s. Lows 10 to 15.

Partly cloudy. Highs in the lower 30s. Lows 10 to 15.

Partly cloudy. Highs in the lower 30s. Lows 10 to 15.

Partly cloudy. Not as cool with lows in the mid 20s.

Partly sunny in the morning then becoming mostly cloudy. Highs in the lower 40s.

Mostly clear. Low temperature around 27F. Dew point will be around 19F with an average humidity of 69%. Winds will be 2 mph from the NW.

Sunny. High temperature around 33F. Dew point will be around 21F with an average humidity of 66%. Winds will be 2 mph from the W.

Clear. Low temperature around 29F. Dew point will be around 22F with an average humidity of 74%. Winds will be 1 mph from the NE.