Tuesday afternoon was bringing cool, overcast conditions and the slight chance of an isolated shower into the overnight hours, forecasters said.

The National Weather Service issued a statement telling of minor coastal flooding in localized areas of Nassau County’s South Shore back bays during Tuesday night’s high tide from 6 to 8 p.m. That means brief and minor flooding of the most vulnerable waterfront areas and shore roads.

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Tuesday’s highs were in the mid-50s, according to the weather service’s site, while average temperatures at this time of year are 74 degrees, News 12 Long Island meteorologist Rich Hoffman said.

Wednesday looks to be cloudy, then should gradually become mostly sunny, with highs in the high 60s, forecasters said.

Daytime temperatures through the rest of the week should be in the mid-60s to low-70s, and nighttime temperatures are expected to be in the mid-50s to 60, the weather service said.

The outlook for the weekend calls for mostly sunny skies Saturday and Sunday, with temperatures in the mid-70s to around 80 degrees, the weather service said.