10-Day Weather Forecast - Decatur, IL

Partly sunny. Not as cool with highs in the mid 40s. South winds 15 to 20 mph becoming west 10 to 15 mph in the afternoon.

Partly cloudy in the evening then clearing. Lows in the lower 20s. Northwest winds 5 to 10 mph.

Sunny cooler with highs in the mid 30s. Northwest winds around 5 mph.

Mostly cloudy. Lows in the mid 20s. Highs in the lower 40s.

Mostly cloudy. Lows in the mid 20s. Highs in the lower 40s.

Mostly cloudy. Lows in the mid 30s. Highs in the mid 50s.

Mostly cloudy. Lows in the mid 30s. Highs in the mid 50s.

Mostly cloudy. Lows around 40. Highs in the upper 50s.

Mostly cloudy. Lows around 40. Highs in the upper 50s.

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

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

Partly cloudy. Low temperature around 47F. Dew point will be around 53F with an average humidity of 86%. Winds will be 11 mph from the SW.

Partly cloudy. High temperature around 55F. Dew point will be around 43F with an average humidity of 73%. Winds will be 3 mph from the SW.

Partly cloudy. Low temperature around 46F. Dew point will be around 44F with an average humidity of 84%. Winds will be 4 mph from the S.

Mostly cloudy. High temperature around 53F. Dew point will be around 42F with an average humidity of 75%. Winds will be 2 mph from the SW.

Partly cloudy. Low temperature around 41F. Dew point will be around 38F with an average humidity of 78%. Winds will be 2 mph from the NW.

Mostly cloudy. High temperature around 46F. Dew point will be around 35F with an average humidity of 70%. Winds will be 3 mph from the NW.

Mostly clear. Low temperature around 32F. Dew point will be around 29F with an average humidity of 74%. Winds will be 4 mph from the NW.