10-Day Weather Forecast - Decatur, IL

Mostly sunny. Highs in the mid 70s. Southeast winds 5 to 10 mph.

Mostly clear. Lows in the upper 40s. Southeast winds around 5 mph.

Mostly sunny. Highs in the upper 70s. South winds around 5 mph.

Mostly cloudy. Lows in the upper 40s. South winds around 5 mph.

Mostly cloudy. Highs in the mid 70s.

Mostly cloudy. Lows in the upper 40s.

Mostly cloudy. Highs in the mid 70s.

Mostly cloudy. Lows in the upper 40s.

Mostly sunny. Highs in the mid 70s.

Mostly clear. Lows in the lower 50s.

Partly cloudy. Highs in the mid 70s.

Partly cloudy. Lows in the mid 40s.

Mostly sunny. Highs in the upper 60s.

Cloudy. Low temperature around 56F. Dew point will be around 52F with an average humidity of 79%. Winds will be 8 mph from the S.

Mostly cloudy. High temperature around 74F. Dew point will be around 54F with an average humidity of 59%. Winds will be 9 mph from the SSE.

Mostly cloudy with a slight chance of rain. Chance of precipitation 25%. Low temperature around 64F. Dew point will be around 55F with an average humidity of 76%. Winds will be 14 mph from the S.

Mostly cloudy with a 30% chance for rain and thunderstorms. High temperature around 73F. Dew point will be around 64F with an average humidity of 77%. Winds will be 18 mph from the S.

Mostly cloudy with a 30% chance for rain and thunderstorms. Low temperature around 50F. Dew point will be around 42F with an average humidity of 87%. Winds will be 18 mph from the WSW.