10-Day Weather Forecast - Illiopolis, IL

Mostly sunny. Not as cool with highs in the upper 40s. Temperature falling into the lower 40s in the afternoon. South winds 15 to 20 mph becoming west 10 to 15 mph in the afternoon.

Partly cloudy. Lows in the lower 20s. Northwest winds 5 to 10 mph.

Sunny cooler with highs in the upper 30s. North winds around 5 mph becoming northeast in the afternoon.

Mostly cloudy. Lows in the mid 20s. Highs in the mid 40s.

Mostly cloudy. Lows in the mid 20s. Highs in the mid 40s.

Mostly cloudy and not as cool. Near steady temperature around 40.

Mostly sunny. Not as cool with highs in the mid 50s.

Mostly cloudy. Lows in the lower 40s.

Cloudy. Highs around 60.

Mostly cloudy. Lows in the lower 50s. Highs in the upper 60s.

Mostly cloudy. Lows in the lower 50s. Highs in the upper 60s.

Partly cloudy. Low temperature around 46F. Dew point will be around 50F with an average humidity of 86%. Winds will be 9 mph from the SW.

Partly cloudy. High temperature around 55F. Dew point will be around 44F with an average humidity of 81%. Winds will be 3 mph from the SW.

Partly cloudy. Low temperature around 45F. Dew point will be around 45F with an average humidity of 89%. Winds will be 4 mph from the S.

Mostly cloudy. High temperature around 51F. Dew point will be around 44F with an average humidity of 82%. Winds will be 2 mph from the SW.

Partly cloudy. Low temperature around 40F. Dew point will be around 39F with an average humidity of 83%. Winds will be 2 mph from the NW.

Mostly cloudy. High temperature around 44F. Dew point will be around 36F with an average humidity of 78%. Winds will be 4 mph from the NW.

Mostly clear. Low temperature around 31F. Dew point will be around 30F with an average humidity of 79%. Winds will be 5 mph from the NW.