10-Day Weather Forecast - Grayslake, IL

Mostly cloudy in the morning then becoming partly cloudy. Humid. Highs in the upper 80s. Southwest winds 5 to 10 mph.

Partly cloudy in the evening then becoming mostly cloudy. A slight chance of showers and thunderstorms late in the evening. A chance of showers and thunderstorms after midnight. Humid with lows in the mid 70s. Southwest winds around 5 mph. Chance of precipitation 40 percent.

Mostly cloudy in the morning then clearing. A chance of showers and thunderstorms. Humid with highs around 90. Southwest winds 5 to 10 mph increasing to 10 to 15 mph in the afternoon. Chance of precipitation 50 percent. Heat index values up to 102.

Mostly clear in the evening then becoming partly cloudy. A slight chance of showers and thunderstorms in the evening. Humid with lows around 70. Northwest winds 5 to 10 mph. Chance of precipitation 20 percent.

Partly cloudy in the morning then clearing. Highs in the lower 80s inland but only in the upper 70s near the lake. North winds 10 to 15 mph.

Mostly clear. Lows in the lower 60s.

Sunny. Highs in the upper 70s.

Mostly clear. Lows in the lower 60s.

Partly cloudy. Highs in the mid 80s.

Partly cloudy in the evening then mostly cloudy with a chance of showers after midnight. Lows in the mid 60s. Chance of precipitation 30 percent.

Mostly cloudy with a chance of showers. Highs in the mid 80s. Chance of precipitation 40 percent.

Partly cloudy with a chance of showers in the evening then mostly cloudy after midnight. Lows in the mid 60s. Chance of precipitation 30 percent.

Partly cloudy. Highs in the mid 80s.

Clear with a 30% chance for rain and thunderstorms. Low temperature around 64F. Dew point will be around 61F with an average humidity of 79%. Winds will be 4 mph from the NE.

Sunny with a 25% chance for rain and thunderstorms. High temperature around 80F. Dew point will be around 63F with an average humidity of 67%. Winds will be 4 mph from the NE.

Clear. Low temperature around 64F. Dew point will be around 61F with an average humidity of 77%. Winds will be 2 mph from the NE.

Sunny with widely scattered thunderstorms. Chance of storms 25%. High temperature around 82F. Dew point will be around 63F with an average humidity of 65%. Winds will be 2 mph from the S.

Mostly clear with widely scattered thunderstorms. Chance of storms 25%. Low temperature around 66F. Dew point will be around 61F with an average humidity of 73%. Winds will be 4 mph from the S.