10-Day Weather Forecast - Grant Park, IL

Mostly sunny. Hot, humid with highs in the mid 90s. Southwest winds 5 to 10 mph. Heat index values up to 107.

Mostly clear. A chance of thunderstorms after midnight. A chance of showers after midnight. A slight chance of thunderstorms late. Humid with lows in the lower 70s. West winds around 5 mph. Chance of precipitation 40 percent.

Partly cloudy. A slight chance of showers and thunderstorms. Humid with highs in the upper 80s. North winds 5 to 10 mph. Chance of precipitation 20 percent. Heat index values up to 102.

Partly cloudy. Humid with lows in the mid 60s. Northeast winds 5 to 10 mph.

Partly cloudy in the morning, then becoming mostly sunny. Highs in the mid 80s.

Mostly clear. Lows in the lower 60s.

Mostly sunny in the morning, then becoming partly cloudy. Highs in the mid 80s.

Partly cloudy. Lows in the lower 60s.

Partly cloudy. Highs in the upper 80s.

Partly cloudy. Lows in the lower 70s.

Partly cloudy. Hot with highs in the lower 90s.

Partly cloudy with a 30 percent chance of showers. Lows in the upper 60s.

Partly cloudy. Highs in the upper 80s.

Partly cloudy. Low temperature around 66F. Dew point will be around 66F with an average humidity of 86%. Winds will be 1 mph from the N.

Mostly sunny with a slight chance of rain. Chance of precipitation 25%. High temperature around 80F. Dew point will be around 69F with an average humidity of 81%. Winds will be 1 mph from the NE.

Clear. Low temperature around 64F. Dew point will be around 65F with an average humidity of 91%. Winds will be 2 mph from the NE.

Sunny. High temperature around 82F. Dew point will be around 69F with an average humidity of 81%. Winds will be 3 mph from the S.

Clear. Low temperature around 64F. Dew point will be around 65F with an average humidity of 87%. Winds will be 2 mph from the S.