10-Day Weather Forecast - Sullivan, IL

Mostly sunny. Highs in the lower 70s. Southeast winds around 5 mph.

Partly cloudy in the evening, then becoming mostly clear. Lows in the mid 40s. Southeast winds around 5 mph.

Mostly sunny. Highs in the mid 70s. South winds around 5 mph.

Partly cloudy. Lows in the mid 40s.

Mostly cloudy. Highs in the mid 70s.

Mostly cloudy. Lows in the upper 40s.

Mostly cloudy. Highs in the mid 70s.

Mostly cloudy. Lows in the upper 40s.

Mostly sunny. Highs in the mid 70s.

Mostly clear. Lows in the upper 40s.

Mostly sunny. Highs in the mid 70s.

Clear. Low temperature around 39F. Dew point will be around 39F with an average humidity of 79%. Winds will be 6 mph from the NW.

Mostly sunny. High temperature around 61F. Dew point will be around 39F with an average humidity of 54%. Winds will be 9 mph from the WNW.

Partly cloudy. Low temperature around 45F. Dew point will be around 34F with an average humidity of 59%. Winds will be 5 mph from the NNE.

Mostly cloudy. High temperature around 61F. Dew point will be around 37F with an average humidity of 46%. Winds will be 8 mph from the SSE.

Partly cloudy with a slight chance of rain. Chance of precipitation 25%. Low temperature around 53F. Dew point will be around 38F with an average humidity of 55%. Winds will be 13 mph from the S.

Mostly sunny. High temperature around 66F. Dew point will be around 50F with an average humidity of 59%. Winds will be 13 mph from the SSW.

Mostly clear. Low temperature around 46F. Dew point will be around 45F with an average humidity of 86%. Winds will be 6 mph from the WNW.