Rounds of snow and flurries will affect the New York City area through next week.
The snowy episodes are being caused by storms originating from Western Canada and are known as Alberta Clippers.
Most storms will struggle to bring a flurry. However, a small number of the storms can bring accumulating snow.
On such storm is swinging through this Saturday with a quick coating to an inch or two of snow in many northern and western suburbs. Travelers should prepare for reduced visibility and slushy spots.
Areas from northern Pennsylvania to upstate New York and central interior New England can receive several inches of snow.
A few snowflakes will mix with the rain in the five boroughs of New York City, while a rumble of thunder may also be heard.
One rare thunderstorm Saturday morning dropped peanut-sized hail on Howell Township, N.J., a National Weather Service spotter reported.
Another weak storm can bring a couple of flurries to the New York City area on Sunday, followed by an afternoon rain or snow shower on Monday.
The pattern will favor bouts of brisk winds.
After moderate cold through Monday, more substantial cold follows later next week.
Later in the month, frigid air that pushes southward over the Midwest will turn eastward and could alter the weak storm pattern to one that favors more potent storms and heavier snow.
While temperatures will be well above average in Pittsburgh this weekend, colder air will arrive next week for the final days of 2014.
Mild weather will continue in Harrisburg this weekend but will be followed by seasonably cold air during the final days of 2014.
The air quality is expected to improve across India and Bangladesh next week, when a tropical threat looms.
A system tracking over the Rocky Mountains will spread snow over the region and into the Plains through the remainder of the week.
While lacking across a large part of the United States on Christmas Day, arctic air is set to make a comeback during the final days of 2014.
Coldest Christmas ever known...minus 8 degrees in Boston. Minus 45 degrees in Lunenburg, VT
Cap May, NJ (1909)
28.57" barometer reading during large coastal storm.
Record Christmas cold wave: 1 degree - Philadelphia, PA (tied record) -12 degrees - Pittsburgh, PA -12 degrees - Cincinnati, OH -4 degrees - Nashville, TN 41 degrees - Miami, FL