10-Day Weather Forecast - Sullivan, IL

Mostly cloudy. Highs in the lower 80s. North winds 5 to 10 mph.

Partly cloudy in the evening then becoming mostly cloudy. Lows in the lower 60s. North winds 5 to 10 mph.

Mostly sunny. Highs in the mid 80s. Northeast winds 5 to 10 mph.

Mostly clear. Lows in the lower 60s. Northeast winds around 5 mph in the evening becoming light and variable.

Mostly clear. Highs in the mid 80s. Lows in the upper 60s.

Mostly clear. Highs in the mid 80s. Lows in the upper 60s.

Mostly sunny with a chance of showers and thunderstorms. Highs in the upper 80s. Chance of rain 40 percent.

A chance of thunderstorms. Showers likely. Lows in the upper 60s. Chance of rain 70 percent.

Mostly cloudy in the morning then becoming partly sunny. A chance of showers and thunderstorms. Highs in the mid 80s. Chance of rain 50 percent.

Mostly cloudy with a chance of showers. Lows in the mid 60s. Chance of rain 50 percent.

Partly cloudy. Highs in the mid 80s. Lows in the mid 60s.

Partly cloudy. Highs in the mid 80s. Lows in the mid 60s.

Partly cloudy. Highs in the mid 80s. Lows in the mid 60s.

Clear. Low temperature around 69F. Dew point will be around 71F with an average humidity of 93%. Winds will be 2 mph from the NW.

Sunny. High temperature around 85F. Dew point will be around 72F with an average humidity of 76%. Winds will be 3 mph from the NW.

Clear. Low temperature around 69F. Dew point will be around 71F with an average humidity of 90%. Winds will be 1 mph from the NW.

Sunny. High temperature around 86F. Dew point will be around 72F with an average humidity of 76%. Winds will be 1 mph from the W.

Clear. Low temperature around 68F. Dew point will be around 71F with an average humidity of 91%. Winds will be 1 mph from the S.