After a mild Saturday, the weather pattern takes a wetter, then colder turn into next week. Several hours of rain and wind Sunday will lead to colder weather for New Year's week on Long Island. An Arctic blast plunges southward for the middle of the week.
High temperatures on Saturday made it into the 50s across Long Island, which were well above normal. Temperatures only drop into the 30s Saturday night with increasing clouds. A storm rides up the coast and brings rain for Sunday.
Rain begins from southwest to northeast in the late morning Sunday. Guidance points to a period of roughly three hours in the mid- to late afternoon of heavier rain. This may lead to localized flooding and ponding on roadways. Winds will pick up by sunset Sunday and may gust to 35 mph. The rain ends during the evening, as the storm is quite the mover.
Rainfall totals of .75"-1.50" are expected. Temperatures reach the 40s Sunday, and drop steadily into Monday. Monday's temperatures may not be able to rebound back to 40 degrees with a stiff wind.
The Arctic push follows into Tuesday. Highs may reach the mid 30s, but Wednesday morning lows may be in the teens. Hump Day's highs don't reach 30. There may be a flurry or two Tuesday night through Wednesday night, but nothing of consequence at this time.
Long-range model guidance are hinting at a coastal storm late in the week. While there's some agreement about the storm and precipitation, at least, it is too early for a specific forecast.