First the cold, then the snow.
Temperatures were expected to plummet overnight Thursday as a high pressure system moved in that will leave Long Island with sunny skies Friday but a high temperature of only about 30 degrees, the National Weather Service said Thursday.
Then after Friday night sees increasing cloud cover and a low of only around 16 degrees, snow is expected Saturday, mainly after 10 a.m. The chance of precipitation is 80% with snow accumulation of 1 to 2 inches possible. The high temperature is predicted to be about 37 degrees.
The weather service's forecast calls for rain and snow Saturday night before 11 p.m. when the temperature is expected to rise to around 41, then a chance of rain between 11 p.m. and 3 a.m. The chance of precipitation is 90% with a new snow accumulation prediction of less than one inch.
"A warm front approaches Saturday afternoon preceded by a period of light to moderate snow before quickly transitioning over to rain by Saturday evening," the weather service said in its regional summary Thursday evening.
Sunday should be sunny on the Island with the temperature falling to about 35 degrees by 5 p.m. The weather service said Sunday night will be mostly clear with a low around 24.
Long Islanders going out to Martin Luther King Day activities on Monday should experience mostly sunning skies and a high temperature near 31.