More rain -- and possible coastal flooding -- are in store today for southwestern Connecticut, according to the National Weather Service.

After early-morning fog clears, the NWS predicts rain, as well as isolated thunderstorms, are possible throughout the day. The daytime high temperature is expected to rise to the mid-70s.

A coastal flood advisory is effect from 11 a.m. to 3 p.m. today as high tide crests about 1 p.m. in western Long Island Sound.

Tonight, showers and thunderstorms are likely before 9 p.m., with the odds for more precipitation dwindling later. The temperature will dip to an overnight low of about 60 degrees.

Tomorrow, the NWS says, should be mostly sunny, with a high near 76 degrees. By nighttime, there is a chance of scattered showers, mainly before 8 p.m. The temperature will fall to the low-50s.

Saturday is expected to be partly sunny, although there is a chance of scattered showers, mainly after noon, the NWS says. The high temperature should be in the mid-60s. Isolated showers are possible Saturday night.

Sunday, the weather service predicts, should be partly sunny, with a high temperature near 61 degrees.