10-Day Weather Forecast - Decatur, IL

Mostly cloudy. A chance of showers with a slight chance of thunderstorms in the afternoon. Highs in the mid 80s. Southwest winds 10 to 15 mph with gusts up to 25 mph. Chance of rain 50 percent.

Showers. Lows in the lower 60s. Northwest winds 10 to 15 mph. Chance of rain near 100 percent.

Mostly cloudy with a chance of showers in the morning, then mostly sunny in the afternoon. Cooler with highs in the lower 70s. North winds 10 to 15 mph. Chance of rain 40 percent.

Mostly clear. Lows around 50.

Mostly clear. Highs in the lower 70s.

Partly cloudy in the evening, then becoming mostly clear. Lows in the upper 40s.

Mostly clear. Highs in the lower 70s.

Mostly clear. Lows in the mid 40s.

Sunny. Highs in the upper 60s.

Mostly clear. Lows in the lower 40s.

Mostly clear. Highs in the upper 60s.

Partly cloudy. Low temperature around 54F. Dew point will be around 46F with an average humidity of 66%. Winds will be 9 mph from the S.

Partly cloudy. High temperature around 79F. Dew point will be around 58F with an average humidity of 59%. Winds will be 12 mph from the SW.

Clear. Low temperature around 58F. Dew point will be around 58F with an average humidity of 85%. Winds will be 8 mph from the WNW.

Partly cloudy. High temperature around 74F. Dew point will be around 58F with an average humidity of 63%. Winds will be 7 mph from the NNW.

Clear. Low temperature around 49F. Dew point will be around 49F with an average humidity of 79%. Winds will be 5 mph from the NNE.

Partly cloudy. High temperature around 72F. Dew point will be around 49F with an average humidity of 59%. Winds will be 3 mph from the SSE.

Mostly clear. Low temperature around 54F. Dew point will be around 48F with an average humidity of 68%. Winds will be 3 mph from the WSW.