Buckle up because the Mid-Atlantic Region faces a sharp drop in temperatures as the new year begins. A polar vortex is coming to NJ—an icy air mass that hovers over the North Pole—is set to shift south, bringing Arctic cold to the region.
The New Jersey-Philadelphia area will start feeling the freeze early next week, with the coldest stretch expected between Jan. 7 and 14, according to the National Weather Service. Daytime highs may barely rise above freezing, while nighttime temperatures could fall into the teens or single digits. Strong winds will worsen the chill, with wind chills dipping below zero in some areas.
This weather pattern is typical for winter, but when the vortex descends, it can send Arctic air into normally milder regions. Along with the bitter cold, any moisture could lead to snow or ice, making roads treacherous and outdoor activities harsh. This further echoes earlier discussions about New Jersey’s upcoming cold winter.
Northern parts of the state with higher elevations are likely to see the coldest conditions, with below-zero wind chills and a greater chance of snow or ice. Central and South Jersey, including coastal areas, will also face freezing temperatures and biting winds. The Philly suburbs and Delaware can expect icy nights and potentially slippery roads, especially in rural spots.
The extreme cold is expected to ease by mid- to late January, with a gradual return to average winter weather as the polar vortex moves away from NJ.
What Is a Polar Vortex?
The polar vortex is a mass of cold, low-pressure air that circles the Earth’s poles, spinning counterclockwise in the stratosphere, says the National Weather Service.
During winter, it can destabilize, pushing frigid air south into mid-latitudes while letting warmer air flow into the Arctic. When this displaced cold air meets moisture, it often results in snow and icy conditions.
The New Jersey Digest is a new jersey magazine that has chronicled daily life in the Garden State for over 10 years.