10-Day Weather Forecast - Mattoon, IL

Mostly sunny with a slight chance of showers. A slight chance of thunderstorms in the morning, then a chance of thunderstorms in the afternoon. Humid with highs in the lower 90s. Southwest winds 10 to 15 mph. Chance of rain 40 percent. Heat index values up to 103.

Partly cloudy. A chance of showers and thunderstorms, mainly in the evening. Humid with lows around 70. South winds 5 to 10 mph. Chance of rain 40 percent.

Partly sunny. A chance of showers and thunderstorms in the afternoon. Humid with highs in the upper 80s. Southwest winds 5 to 10 mph. Chance of rain 40 percent.

Partly cloudy in the evening, then becoming mostly cloudy. A chance of showers and thunderstorms. Humid with lows in the lower 70s. Southwest winds around 5 mph, becoming northeast after midnight. Chance of rain 50 percent.

Partly sunny with a chance of showers and thunderstorms. Highs in the mid 80s. Chance of rain 50 percent.

Showers likely with a chance of thunderstorms. Lows in the upper 60s. Chance of rain 70 percent.

Mostly cloudy with a chance of showers in the morning, then partly sunny in the afternoon. Highs in the mid 80s. Chance of rain 40 percent.

Partly cloudy. A chance of showers after midnight. Lows in the upper 60s. Chance of rain 30 percent.

Partly cloudy. Highs in the upper 80s.

Partly cloudy. Lows in the lower 70s.

Partly cloudy. Highs in the upper 80s.

Partly cloudy with a chance of showers. Lows in the upper 60s. Chance of rain 40 percent.

Mostly sunny. Highs around 80.

Mostly clear with a 25% chance for rain and thunderstorms. Low temperature around 67F. Dew point will be around 69F with an average humidity of 94%. Winds will be 4 mph from the E.

Mostly sunny with widely scattered thunderstorms. Chance of storms 25%. High temperature around 82F. Dew point will be around 68F with an average humidity of 76%. Winds will be 3 mph from the E.

Clear with widely scattered thunderstorms. Chance of storms 25%. Low temperature around 69F. Dew point will be around 69F with an average humidity of 87%. Winds will be 2 mph from the SE.

Sunny with widely scattered thunderstorms. Chance of storms 30%. High temperature around 85F. Dew point will be around 70F with an average humidity of 74%. Winds will be 3 mph from the SW.

Clear with widely scattered thunderstorms. Chance of storms 30%. Low temperature around 69F. Dew point will be around 70F with an average humidity of 87%. Winds will be 2 mph from the S.