Thanksgiving Week Arctic Blast to Bring Subfreezing Temperatures and Travel Delays Across U.S. Midwest and Plains

ILLINOIS — Forecasters are warning that a massive Arctic air outbreak is expected to sweep across the United States during Thanksgiving week, bringing dangerously cold temperatures, gusty winds, and possible wintry precipitation across much of the nation — including the Midwest, Great Plains, and Illinois.

According to meteorologists, this cold front marks a significant pattern shift that will likely affect millions of holiday travelers between Tuesday, November 25, and Saturday, November 30, coinciding with one of the busiest travel periods of the year.

Arctic Air to Push Deep into the Lower 48

Weather models show that the Arctic front will first surge into the Pacific Northwest and Northern Rockies by Tuesday, then plunge south and east into the Central Plains and Midwest through midweek.

By Thanksgiving Day, the cold air mass will expand across the central U.S., eventually reaching the East Coast and Southeast by Black Friday weekend.

“This is shaping up to be one of the most widespread Arctic intrusions so far this season,” forecasters said. “Temperatures will likely be well below normal for most of the country, with subfreezing air extending from Montana and Colorado down to Texas and east into Illinois and the Great Lakes.”

Early indications suggest highs may stay 15–25°F below normal in many regions, while overnight lows could dip into the teens and single digits across the northern Plains and Upper Midwest.

Illinois and Midwest to Feel the Core of the Cold

Illinois, Iowa, and surrounding states are expected to feel the brunt of the Arctic air starting late Wednesday and continuing through the Thanksgiving weekend.

Forecasters predict that Naperville, Chicago, and much of northern Illinois will experience daytime highs only in the 20s to low 30s, with wind chills making it feel even colder.

Snow is not guaranteed yet, but forecasters say wintry precipitation is possible, especially if a low-pressure system develops along the cold front as it sweeps across the Plains.

“We’re monitoring for potential snow or mixed precipitation during the Thanksgiving travel window,” said meteorologist Ryan Hall. “Any development of that low-pressure system could lead to slick conditions across the Midwest and Great Lakes.”

Possible Travel Impacts During Holiday Rush

The cold blast could have serious implications for Thanksgiving travel, as millions of Americans are expected to hit the roads and skies between Tuesday and Sunday.

• Air travel delays are possible at major Midwest hubs including Chicago O’Hare, Denver, and Minneapolis, if snow bands or icy conditions develop.
• Road travel may be affected across interstates such as I-70, I-80, and I-90, where freezing temperatures could create slick surfaces.
• Strong winds accompanying the Arctic front could also reduce visibility during snow bursts and cause minor flight turbulence across the region.

The National Weather Service urges travelers to monitor local forecasts frequently as the system approaches. Timing and severity may still shift in the coming days depending on the evolution of the Arctic air mass and associated storm development.

“It’s too early to cancel travel plans,” the NWS said, “but travelers should be prepared for disruptions and stay alert to updated forecasts heading into Thanksgiving week.”

How Cold Will It Get?

Meteorologists expect the Arctic blast to bring the coldest temperatures of the season for many states:

• North Dakota, Montana, and Wyoming: Lows near or below 0°F by midweek.
• Colorado and Nebraska: Highs only in the teens and 20s; snow possible in higher elevations.
• Illinois, Iowa, and Wisconsin: Thanksgiving highs in the upper 20s to 30s, with wind chills in the teens.
• Texas and Oklahoma: Temperatures plunging into the 30s and 40s, marking a sharp contrast from last week’s warmth.

The core of the Arctic air is expected to remain over the central and eastern U.S. through the Thanksgiving weekend before gradually moderating in early December.

Potential for Wintry Precipitation

In addition to frigid temperatures, meteorologists are tracking a developing jet stream pattern that could bring wintry precipitation from the Rockies through the Midwest.

If the temperature gradient tightens, a low-pressure system could form, enhancing snow chances across parts of Kansas, Missouri, Illinois, and Indiana around Thanksgiving Day.

While the exact track remains uncertain, even light accumulations could make travel treacherous given the cold air and strong winds expected behind the front.

“We’re closely watching the potential for a quick round of snow or freezing rain,” forecasters said. “It won’t take much to cause travel problems with temperatures this low.”

Tips for Travelers and Residents

Residents and travelers are encouraged to prepare early for the Arctic blast:

• Check vehicle fluids and tire pressure before driving long distances.
• Pack emergency kits with blankets, water, and snacks.
• Monitor flight schedules for weather-related changes.
• Dress in layers to protect against wind chills, especially when outdoors for extended periods.

The Thanksgiving week Arctic outbreak will be closely monitored in the coming days as new data refines its path and intensity.

Stay tuned to NapervilleLocal.com for ongoing updates on Illinois and Midwest weather as the Thanksgiving cold front approaches.