A coastal flood advisory is in effect for the Charleston area today, the National Weather Service says.

Today will be mostly cloudy with dense fog in the morning, and a 20 percent chance of rain.

Highs will be in the mid 70s with lows in the upper 50s. East winds will be from 10 to 15 mph.

Saturday: Mostly cloudy with dense fog in the morning. Highs will be in the upper 70s with lows in the mid 50s. Southwest winds will be about 5 mph.

Sunday: Patch fog in the morning with highs in the upper 70s and lows in the upper 50s. South winds will be from 5 to 10 mph.