10-Day Weather Forecast - Decatur, IL

Mostly cloudy with a chance of flurries in the morning then mostly sunny in the afternoon. Very windy and much cooler with highs in the mid 20s. Northwest winds 25 to 35 mph with gusts up to 45 mph. Wind chill values as low as 6 below in the morning.

Partly cloudy in the evening then becoming mostly clear. Lows around 13. Northwest winds 15 to 20 mph with gusts up to 30 mph. Wind chill values as low as 2 below.

Mostly sunny. Highs in the upper 20s. West winds 10 to 15 mph. Wind chill values as low as 2 below in the morning.

Partly cloudy and not as cool. Near steady temperature in the upper 20s.

Mostly cloudy. Highs in the upper 30s. Lows in the lower 20s.

Mostly cloudy. Highs in the upper 30s. Lows in the lower 20s.

Mostly sunny. Highs in the lower 30s.

Mostly clear. Lows around 15.

Partly cloudy. Highs in the mid 30s. Lows in the mid 20s.

Partly cloudy. Highs in the mid 30s. Lows in the mid 20s.

Mostly sunny in the morning then becoming mostly cloudy. Highs in the lower 40s.

Mostly clear. Low temperature around 26F. Dew point will be around 20F with an average humidity of 72%. Winds will be 6 mph from the NW.

Sunny. High temperature around 36F. Dew point will be around 24F with an average humidity of 68%. Winds will be 7 mph from the W.

Clear. Low temperature around 29F. Dew point will be around 24F with an average humidity of 80%. Winds will be 4 mph from the W.

Mostly sunny. High temperature around 38F. Dew point will be around 26F with an average humidity of 73%. Winds will be 5 mph from the W.

Mostly clear. Low temperature around 29F. Dew point will be around 26F with an average humidity of 82%. Winds will be 3 mph from the SW.

Mostly sunny. High temperature around 38F. Dew point will be around 27F with an average humidity of 73%. Winds will be 3 mph from the W.

Partly cloudy. Low temperature around 32F. Dew point will be around 28F with an average humidity of 84%. Winds will be 3 mph from the S.