10-Day Weather Forecast - Granite City, IL

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

Mostly clear. Lows in the lower 60s. East winds around 5 mph.

Sunny. Highs in the upper 80s. Southeast winds around 5 mph.

Partly cloudy in the evening, then becoming mostly clear. Lows in the upper 60s. South winds around 5 mph.

Mostly clear. Hot. Highs in the mid 90s. Heat index values up to 105.

Mostly clear. Hot. Lows in the mid 70s. Heat index values up to 105.

Mostly clear. Hot. Highs in the mid 90s. Heat index values up to 105.

Mostly clear. Hot. Lows in the mid 70s. Heat index values up to 105.

Mostly clear. Hot. Highs in the mid 90s. Heat index values up to 105.

Mostly clear. Hot. Lows in the mid 70s. Heat index values up to 105.

Mostly clear. Hot. Highs in the mid 90s. Heat index values up to 105.

Mostly clear. Hot. Lows in the mid 70s. Heat index values up to 105.

Mostly clear. Hot. Highs in the mid 90s. Heat index values up to 105.

Clear with widely scattered thunderstorms. Chance of storms 25%. Low temperature around 78F. Dew point will be around 66F with an average humidity of 55%. Winds will be 2 mph from the S.

Mostly sunny. High temperature around 97F. Dew point will be around 67F with an average humidity of 48%. Winds will be 4 mph from the S.

Clear with widely scattered thunderstorms. Chance of storms 25%. Low temperature around 78F. Dew point will be around 64F with an average humidity of 51%. Winds will be 3 mph from the S.

Sunny. High temperature around 97F. Dew point will be around 65F with an average humidity of 44%. Winds will be 3 mph from the W.

Clear. Low temperature around 72F. Dew point will be around 63F with an average humidity of 57%. Winds will be 1 mph from the N.