10-Day Weather Forecast - Decatur, IL

Partly sunny. Highs in the lower 50s. Southwest winds 15 to 20 mph with gusts up to 30 mph.

Mostly cloudy. Lows in the mid 30s. West winds 10 to 15 mph with gusts up to 25 mph.

Mostly cloudy and breezy. Much cooler with highs in the mid 30s. Temperature falling into the upper 20s in the afternoon. Northwest winds 15 to 25 mph with gusts up to 40 mph.

Partly cloudy in the evening then clearing. Much cooler with lows around 13. Northwest winds 15 to 20 mph with gusts up to 30 mph. Wind chill values as low as zero.

Sunny. Highs in the upper 20s. Wind chill values as low as zero in the morning.

Mostly cloudy with a 50 percent chance of snow. Lows in the lower 20s. Temperature rising into the upper 20s after midnight.

Mostly cloudy. A chance of snow in the afternoon. Highs in the upper 30s. Chance of snow 40 percent.

Mostly cloudy. A chance of snow in the evening. Lows 10 to 15. Chance of snow 30 percent. Wind chill values as low as zero after midnight.

Mostly cloudy. Highs around 20. Lows around 5 above. Wind chill values as low as 10 below.

Mostly cloudy. Highs around 20. Lows around 5 above. Wind chill values as low as 10 below.

Mostly cloudy. Highs around 20. Lows around 5 above. Wind chill values as low as 10 below.

Partly cloudy. Lows around 10 above. Highs in the upper 20s. Wind chill values as low as 5 below.

Partly cloudy. Lows around 10 above. Highs in the upper 20s. Wind chill values as low as 5 below.

Clear. Low temperature around 15F. Dew point will be around 11F with an average humidity of 73%. Winds will be 7 mph from the W.

Sunny. High temperature around 27F. Dew point will be around 13F with an average humidity of 64%. Winds will be 5 mph from the SW.

Mostly clear. Low temperature around 21F. Dew point will be around 16F with an average humidity of 75%. Winds will be 6 mph from the S.

Partly cloudy. High temperature around 34F. Dew point will be around 21F with an average humidity of 70%. Winds will be 7 mph from the S.

Partly cloudy. Low temperature around 27F. Dew point will be around 25F with an average humidity of 83%. Winds will be 4 mph from the S.