10-Day Weather Forecast - Glen Carbon, IL

Sunny. Highs in the mid 80s. Northeast winds 10 to 15 mph.

Clear. Lows in the upper 60s. North winds 5 to 10 mph.

Sunny. Highs in the upper 80s. Northeast winds 5 to 10 mph.

Clear. Lows in the upper 60s. Northeast winds 5 to 10 mph.

Mostly clear. Highs in the lower 90s. Lows in the lower 70s. Heat index values up to 100.

Mostly clear. Highs in the lower 90s. Lows in the lower 70s. Heat index values up to 100.

Mostly clear. Highs in the lower 90s. Lows in the lower 70s. Heat index values up to 100.

Mostly clear. Highs in the lower 90s. Lows in the lower 70s. Heat index values up to 100.

Mostly clear. Highs in the lower 90s. Lows in the lower 70s. Heat index values up to 100.

Mostly clear. Highs in the lower 90s. Lows in the lower 70s. Heat index values up to 100.

Mostly clear. Highs in the lower 90s. Lows in the lower 70s. Heat index values up to 100.

Mostly clear. Highs in the lower 90s. Lows in the lower 70s. Heat index values up to 100.

Mostly clear. Highs in the lower 90s. Lows in the lower 70s. Heat index values up to 100.

Clear with widely scattered thunderstorms. Chance of storms 30%. Low temperature around 73F. Dew point will be around 71F with an average humidity of 78%. Winds will be 4 mph from the SW.

Mostly sunny with scattered thunderstorms. Chance of storms 35%. High temperature around 88F. Dew point will be around 73F with an average humidity of 71%. Winds will be 4 mph from the W.

Clear with scattered thunderstorms. Chance of storms 40%. Low temperature around 69F. Dew point will be around 70F with an average humidity of 82%. Winds will be 1 mph from the NW.

Sunny with widely scattered thunderstorms. Chance of storms 25%. High temperature around 85F. Dew point will be around 69F with an average humidity of 69%. Winds will be 1 mph from the SW.

Clear with widely scattered thunderstorms. Chance of storms 25%. Low temperature around 68F. Dew point will be around 68F with an average humidity of 81%. Winds will be 1 mph from the S.