10-Day Weather Forecast - Decatur, IL

Partly sunny. Highs in the upper 40s. South winds 10 to 15 mph with gusts up to 25 mph.

Mostly cloudy in the evening then becoming partly cloudy. Not as cool. Near steady temperature in the lower 40s. Southwest winds around 10 mph with gusts up to 20 mph.

Sunny. Not as cool with highs in the upper 50s. Southwest winds 5 to 10 mph becoming northwest in the afternoon.

Partly cloudy. Lows in the upper 30s. East winds 5 to 10 mph.

Cloudy. Highs in the upper 50s.

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

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

Mostly cloudy in the evening then becoming partly cloudy. Lows around 50.

Sunny. Highs in the lower 60s.

Partly cloudy in the evening then becoming mostly cloudy. Cooler with lows around 40.

Mostly cloudy. Highs in the mid 50s. Lows in the mid 20s.

Mostly cloudy. Highs in the mid 50s. Lows in the mid 20s.

Sunny. Much cooler with highs in the upper 30s.

Partly cloudy. Low temperature around 38F. Dew point will be around 31F with an average humidity of 71%. Winds will be 2 mph from the NW.

Partly cloudy. High temperature around 45F. Dew point will be around 30F with an average humidity of 62%. Winds will be 1 mph from the SE.

Partly cloudy. Low temperature around 39F. Dew point will be around 31F with an average humidity of 69%. Winds will be 4 mph from the SE.

Mostly cloudy. High temperature around 47F. Dew point will be around 32F with an average humidity of 63%. Winds will be 6 mph from the S.

Mostly cloudy. Low temperature around 40F. Dew point will be around 33F with an average humidity of 71%. Winds will be 5 mph from the S.