Long Island weather: More snow forecast this week; weekend clearing expected

The blizzard that has dumped nearly two feet of snow in places and battered Long Island with hurricane-force winds could bring more snow before it's finished Monday, the National Weather Service said.

And there is snow in the forecast beginning Wednesday and Thursday, 

The weather service said sunshine and temperatures around freezing are expected Tuesday, allowing for a day to clear out some of the snow.

But Long Islanders could see a wintry mix of snow and rain both Wednesday and Thursday despite daytime temperatures that could reach into the low 40s.

The morning rain and snow Wednesday are expected to change to all rain after 10 a.m., forecaster said. 

A chance of rain and snow returns Thursday after 1 p.m. with increasing clouds and a high near 40. Friday and the weekend show signs of clearing, with rising temperatures well above freezing, the service reported.

Before that, the blizzard warning will remain in effect until 6 p.m. Monday, the weather service said,

Projections from the weather service are that Islip could see as much as 32 inches on snow before the storm passes. Southampton could see 31 inches and areas of Nassau could see 28 inches or more.

The weather service reported winds as strong as 84 mph had been recorded in Montauk, with winds of 74 mph recorded in Stony Brook. Both measurements qualify as a Category 1 hurricane.

Forecasters reported wind gusts of 54 mph in Islip and 53 mph at Republic Airport in Farmingdale.

In addition to more anticipated snowfall, widespread moderate coastal flooding is expected for all coastal areas at high tide, the service said.

"Locally major coasts impacts possible for the southern bays of western Long Island," the weather service warned, as well as on the Twin Forks and North Shore.

Dune erosion is likely, as are overwashes along ocean beachfront areas.

A coastal flood advisory is in effect for much of Long Island for Monday's high tides.

By John Valenti

john.valenti@newsday.com

John Valenti, a Newsday reporter since 1981, has been honored nationally by the Associated Press, Society of the Silurians and National Headliner Awards for investigative, enterprise and breaking news reporting, as well as column writing. He is the author of “Swee'pea,” about New York playground basketball star Lloyd Daniels. His debut crime novel, “For Nothing Is Hidden,” rooted in 1950s Long Island, was released in October 2025.