The storm is predicted to affect millions of people as it makes its way from the West Coast to New England.
The National Weather Service (NWS) in Pittsburgh issued a winter storm warning for the area that went into effect Friday.
Lee Hendricks, NWS spokesman, said Fayette County residents can expect to wake up to rain and sleet Sunday morning, with possible snow accumulations in the afternoon.
Hendricks said the storm system is actually bringing in milder temperatures that will hit the mid-30s before falling into the upper 20s throughout the afternoon and late evening.
Hendricks said the snow is expected to taper off into flurries late Sunday night into Monday morning with temperatures dipping down to 5 or 10 degrees in the evening.
According to Hendricks, the remainder of the week appears to be dry until Thursday.
The National Weather Service in New York issued a winter storm watch for the tristate area for Thursday evening through Friday afternoon.
The alert is in effect for several counties in Connecticut, New Jersey and New York, including all of New York City.
A winter storm watch means significant snow, sleet, or ice may accumulate and may impact travel, according to the NWS.
Forecasters expect 4 to 8 inches of snow, winds of 10 to 20 mph with gusts up to 30 mph, temperatures in the single digits to teens, and visibility at times to be limited to one quarter to one half mile.
“The accumulating snow, along with areas of blowing snow, will be capable of producing hazardous travel conditions,” the NWS said.
The Fox 5 weather team will be updating the forecast.