Are you ready for the coming arctic storm? Here’s the latest Colorado weather forecast and everything else you need to know ahead of extreme cold.

Still, several Colorado school districts will start late on Tuesday as the state waits out the last of subzero temperatures. Denver, Jefferson County, Aurora, Littleton, St. Vrain Valley and Weld, among others, are all on a two-hour delay.

Here are the lowest temperatures across Colorado on Tuesday morning, according to the National Weather Service.

Colorado will have a long stretch of below freezing and below-zero wind chills, with several inches of snow likely as well.

It’s going to be a rude awakening tomorrow — a full taste of winter, for sure,” National Weather Service meteorologist says

More than 400 flights were delayed or canceled at Denver International Airport on Monday as a polar vortex continued to freeze Colorado. There were 394 delayed and 27 canceled flights as of 12:40 p.m.

The most unusually cold air in the Northern Hemisphere will be over the United States early next week, bringing dangerously frigid conditions.

Some areas of the U.S. may see temperatures as low as -20 or -30 degrees early next week as arctic air from Siberia rolls in.

Extreme cold and snow smacked the Gulf Coast states this week, but the polar vortex may not be to blame.

Polar vortex brings subzero temperatures to Colorado. Posted: January 19, 2025 \| Last updated: January 19, 2025. Here are the top stories from 9NEWS Mornings

According to the NWS, the Arctic polar vortex is a powerful band of west-to-east winds that develops in the stratosphere, about 10 to 30 miles above the North Pole, during the winter season. It is always present near the poles, though it weakens during summer and intensifies in winter.

By the afternoon hours on Tuesday, the temperature in Denver could break above freezing for the first time since Friday afternoon.