Overnight rain on Long Island will continue through mid-Wednesday morning, with gradual clearing after that and a high of 45 degrees, the National Weather Service said.
Wednesday night will be the coldest of the next seven days, with a low of 27, and wind chill of 20 to 25, thanks partly to a stiff northwest wind that could hit 18 mph.
Thursday brings the sunshine back — and a daytime high of 40.
While clouds sweep in that night, when a low of 35 is predicted; they should depart in time for an at least partly sunny Friday, when thermometers should hit 44.
Rain, however, looks likely, starting as soon as 1 a.m. Saturday, with the weather service assessing the odds at 60%.
And once again, that rain could begin as a wintry mix. The weather service said it "can`t rule out a mix of rain and snow even for some coastal areas at the onset of precipitation, but this looks to be mainly a rain event there."
It added: "For inland areas, snow or a rain/snow mix Friday night before transitioning to all rain by late morning."
Christmas Day’s odds of rain are only a little lower: 50%. The daytime high should be about 49.
After a chilly night, with the low temperature right around freezing, Sunday should be sunny — and so should Monday — with highs both days in the upper 40s and lows during the night around freezing.