Updated: January 16, 2026 — A new surge of Arctic air tied to the polar vortex is lining up to bring a sharper turn back to winter across large parts of the United States. Forecasts point to a cold push beginning late January 16 and expanding through January 18, with additional waves possible into late January.
For viewers, the key takeaway is simple: this isn’t just “a chilly weekend.” It’s a pattern shift that can increase the risk of dangerously low wind chills, icy travel, and bursts of snow—especially across the central and eastern U.S.
What is the polar vortex (and why it matters)?
The polar vortex is a large area of low pressure and cold air that usually stays parked near the Arctic. When the pattern becomes “wavier” or the vortex becomes stretched/displaced, colder air can spill farther south into Canada and the U.S. That’s when the term “polar vortex” shows up in everyday forecasts.
Timing: When the cold is expected to arrive
Forecast coverage indicates the cold begins to ramp up tonight (Jan. 16) across the Northern and Central Plains and Upper Midwest, then spreads east by Jan. 18. Some outlooks suggest the broader cold pattern could linger through late January (and potentially into early February).
Looking further out, NOAA’s Climate Prediction Center (CPC) highlights an increased risk of much-below-normal temperatures across parts of the Northern Plains/Upper Midwest/Great Lakes during the Jan. 24–28 window, a signal that additional cold waves remain on the table.
Where the cold could be most impactful
While exact temperatures vary by city, the strongest “core” of Arctic air is expected to focus on the central U.S. first (Northern Plains/Upper Midwest) before pushing into the Midwest and East. That’s also where wind chills can become a bigger concern than the thermometer alone.
Farther south, the main issue is often the “edge” of the cold: hard freezes, icy bridges, and rare wintry precipitation in places that don’t handle it often. Some reporting notes the cold could reach into parts of the Deep South and even the Florida Panhandle at times.
Snow and ice: What’s the risk?
Cold air alone doesn’t guarantee big snowstorms—but it can set the stage. NOAA CPC hazard outlooks flag periods with elevated risk for heavy snow in several regions later in the month, including parts of the Plains/Midwest/Great Lakes/Appalachians/Northeast around Jan. 23–30 (varying by region).
For day-to-day planning, the most reliable guidance comes from local National Weather Service offices (timing, snowfall totals, ice potential, and wind chill headlines), since those details shift quickly as the storm track evolves.
How to prepare (without panic-buying the grocery aisle)
For travel
Expect the highest disruption risk where snow + wind overlap (blowing snow, low visibility) and where a quick temperature drop creates flash-freeze conditions on roads. If you’re traveling, build extra time and check local road conditions and advisories before you go.
For homes and pipes
If you’re in a hard-freeze zone, remember the basics: insulate exposed pipes where possible, keep a slow drip if your home is prone to freezing lines, and know where your main shutoff is—just in case.
For people and pets
Wind chills are what drive frostbite risk. Dress in layers, limit time outdoors during the coldest hours, and bring pets inside. If you have elderly neighbors or anyone who relies on space heaters, check in—cold snaps can be most dangerous when they catch people off guard.
Bottom line
The upcoming polar vortex-driven pattern looks set to deliver at least one major push of Arctic air starting Jan. 16–18, with signals for additional cold later in the month—especially across parts of the Northern Plains, Upper Midwest, and Great Lakes.
