10-Day Weather Forecast - Sullivan, IL

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

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

Sunny cooler with highs in the mid 30s. North winds around 5 mph.

Partly cloudy in the evening then becoming mostly cloudy. Lows in the lower 20s. Southeast winds 5 to 10 mph.

Mostly cloudy. Highs in the mid 40s. Lows in the upper 30s.

Mostly cloudy. Highs in the mid 40s. Lows in the upper 30s.

Mostly cloudy. Highs in the mid 50s. Lows around 40.

Mostly cloudy. Highs in the mid 50s. Lows around 40.

Cloudy. Highs in the upper 50s.

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

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

Mostly cloudy. Lows in the mid 40s. Highs in the upper 50s.

Mostly cloudy. Lows in the mid 40s. Highs in the upper 50s.

Partly cloudy. Low temperature around 49F. Dew point will be around 48F with an average humidity of 89%. Winds will be 6 mph from the SW.

Cloudy. High temperature around 54F. Dew point will be around 46F with an average humidity of 80%. Winds will be 2 mph from the W.

Cloudy with a slight chance of rain. Chance of precipitation 30%. Low temperature around 41F. Dew point will be around 39F with an average humidity of 83%. Winds will be 2 mph from the NW.

Cloudy. High temperature around 44F. Dew point will be around 35F with an average humidity of 75%. Winds will be 4 mph from the N.

Partly cloudy with a slight chance of rain. Chance of precipitation 25%. Low temperature around 33F. Dew point will be around 29F with an average humidity of 80%. Winds will be 5 mph from the N.