A big polar plunge will develop heading into the weekend as a series of arctic cold fronts pass the region bringing very cold air from the North Pole and eastern Canada down to the Northeastern US.
The first arctic cold front passes through on Thursday giving the chance of a few scattered snow showers for parts of the region. Most of the region will stay partly cloudy with temperatures in the upper 20s. Friday will feature a mix of sun and clouds with temperatures dipping further down into the mid 20s.
The second arctic cold front passes through late Friday night into Saturday morning. That could bring in some more snow showers as it passes by.
Temperatures early on Saturday will start out in the lower 20s but will drip through the teens though the afternoon. On top of the cold, the winds will be blasting behind the front bringing sub-zero wind chills through Sunday. By Saturday night, wind chill values could go down to -15 in the city. Surrounding suburbs could go down to -25 out in the island and across the northern suburbs.
Temperatures moderate early next week but another system starts moving in by late Monday into Tuesday. Earliest indications show that this storm has the potential start out with snow before changing over to rain.