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Long Island weather: Here comes the cold, with a slight chance of snow

Nancie Rostrup of Lindenhurst bundles up for the

Nancie Rostrup of Lindenhurst bundles up for the cold as she walks the boardwalk near the Fire Island Lighthouse on Thursday, Dec. 8, 2016 Credit: Newsday / Thomas A. Ferrara

Long Islanders will notice a distinct turn toward cold weather, as temperatures overnight Thursday head down mostly to the mid- to upper 20s — and rise only to the upper 30s during the day Friday, forecasters say.

It’s definitely time to find the winter weather gear, said Rich Hoffman, News 12 Long Island meteorologist.

Put that cold together with a little moist air, and we can expect to see scattered snow flurries on Friday, from about midmorning to late afternoon, the National Weather Service says.

Friday also brings breezy conditions, meaning wind chill will be coming into play.

Saturday is looking to bring mostly sunny skies and highs in the upper 30s, and overnight lows in the mid-20s.

Then comes about a 30 percent chance for rain later Sunday afternoon, with highs in the upper 30s, the weather service said.

The forecast as of Thursday was also for a 60 percent to 70 percent chance for precipitation overnight Sunday into Monday, as night time temperatures dip to the low 30s.

As to its being snow, rain or a mix is still in question, said Faye Barthold, National Weather Service meteorologist based in Upton, as there’s uncertainty at this point as to when milder air would arrive.

Taking a longer range view into the month, the Climate Prediction Center, which is under the umbrella of the National Oceanic and Atmospheric Administration, is indicating a 60 percent to 70 percent probability for below-normal temperatures — as opposed to right at or above normal — for the Dec. 13 to 21 period. This for the Northeast region, with Long Island included.

At the same time, there’s a slight tilt, then a 40 percent to 50 percent chance, in favor of above normal precipitation.

Cold air and precipitation are certainly the ingredients needed for snow, Barthold said, but it’s far too early to be thinking of any specific matchups.

The normal daily highs for Dec. 13 to 21 at Long Island MacArthur Airport run from 44 to 41 degrees, Barthold said, with lows of 29 to 27 degrees. Normal daily precipitation would be about 0.13 to 0.14 of an inch of rain or melted equivalent.

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