10-Day Weather Forecast - Caseyville, IL

Mostly sunny. Highs in the mid 80s. Southeast winds around 5 mph.

Partly cloudy in the evening, then becoming mostly cloudy. Lows in the upper 60s. East winds around 5 mph in the evening, becoming light and variable.

Mostly sunny. A slight chance of showers and thunderstorms in the afternoon. Highs around 90. Southwest winds around 5 mph. Chance of rain 20 percent.

Mostly clear. A slight chance of showers and thunderstorms in the evening. Lows in the upper 60s. Northwest winds around 5 mph. Chance of rain 20 percent.

Mostly clear. Highs in the upper 80s.

Mostly clear. Lows in the mid 60s.

Mostly clear. Highs in the upper 80s.

Mostly clear. Lows in the mid 60s.

Mostly clear. Highs in the upper 80s.

Mostly clear with a slight chance of showers in the evening, then partly cloudy after midnight. Lows around 70. Chance of rain 20 percent.

Mostly sunny. Highs in the mid 90s.

Mostly clear in the evening, then becoming partly cloudy. Lows in the mid 70s.

Mostly sunny. Highs in the mid 90s. Heat index values up to 100.

Mostly clear. Low temperature around 76F. Dew point will be around 68F with an average humidity of 63%. Winds will be 5 mph from the SW.

Partly cloudy. High temperature around 91F. Dew point will be around 69F with an average humidity of 58%. Winds will be 4 mph from the SW.

Mostly clear. Low temperature around 74F. Dew point will be around 67F with an average humidity of 65%. Winds will be 2 mph from the SW.

Sunny with widely scattered thunderstorms. Chance of storms 25%. High temperature around 91F. Dew point will be around 67F with an average humidity of 56%. Winds will be 2 mph from the SW.

Mostly clear. Low temperature around 72F. Dew point will be around 67F with an average humidity of 68%. Winds will be 1 mph from the S.