10-Day Weather Forecast - Granite City, IL

Mostly sunny. Highs in the upper 80s. Light and variable winds.

Mostly clear. Lows in the lower 70s. South winds around 5 mph.

Mostly sunny. A slight chance of showers and thunderstorms in the afternoon. Highs in the lower 90s. Southwest winds around 5 mph. Chance of rain 20 percent. Heat index values up to 101.

Partly cloudy in the evening then becoming mostly cloudy. A chance of thunderstorms. A chance of showers in the evening then showers likely after midnight. Lows in the mid 70s. South winds around 5 mph. Chance of rain 70 percent. Heat index values up to 100 early in the evening.

A chance of showers with a slight chance of thunderstorms in the morning then showers likely with a chance of thunderstorms in the afternoon. Highs around 90. Chance of rain 70 percent. Heat index values up to 100.

Showers likely. Thunderstorms likely mainly in the evening. Lows in the lower 70s. Chance of rain 70 percent.

Mostly cloudy with a chance of showers and thunderstorms. Highs in the upper 80s. Lows around 70. Chance of rain 50 percent.

Mostly cloudy with a chance of showers and thunderstorms. Highs in the upper 80s. Lows around 70. Chance of rain 50 percent.

Mostly sunny with a slight chance of showers. A slight chance of thunderstorms in the afternoon. Highs in the upper 80s. Chance of rain 20 percent.

Mostly clear. Lows around 70. Highs around 90.

Mostly clear. Lows around 70. Highs around 90.

Clear. Lows in the lower 70s.

Sunny. Highs in the lower 90s. Heat index values up to 100.

Clear. Low temperature around 76F. Dew point will be around 71F with an average humidity of 74%. Winds will be 3 mph from the E.

Sunny. High temperature around 90F. Dew point will be around 72F with an average humidity of 65%. Winds will be 4 mph from the E.

Clear with widely scattered thunderstorms. Chance of storms 25%. Low temperature around 74F. Dew point will be around 71F with an average humidity of 74%. Winds will be 3 mph from the E.

Sunny with widely scattered thunderstorms. Chance of storms 30%. High temperature around 88F. Dew point will be around 71F with an average humidity of 65%. Winds will be 2 mph from the NE.

Clear with a 35% chance for rain and thunderstorms. Low temperature around 72F. Dew point will be around 69F with an average humidity of 72%. Winds will be 3 mph from the E.