A polar vortex will plunge Colorado into bitter, sub-zero cold this weekend and could bring up to 10 inches of snow in some ...

Here is what is and isn't a polar vortex when Colorado receives cold like what is forecast for the holiday weekend.

More than 400 flights were delayed or canceled at Denver International Airport on Monday as a polar vortex continued to ...

However, things are expected to improve Tuesday; temperatures should to climb back toward 40 along the Front Range, as the polar vortex releases its grip. Still, several Colorado school districts ...

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

RELATED: Everything you need to know about the polar vortex bringing extreme cold to Colorado A high of 14 was forecast Saturday in Denver, falling to 6 degrees below zero overnight, according to ...

Colorado will see its coldest temperatures of the winter as a mass of cold air descends on the state from the Artic. But despite the bitter cold, this weather event is not a polar vortex.

The Arctic air mass will be in Colorado Friday afternoon, but the effects of the polar vortex won't be fully felt until after the sun goes down. Snow will come into the state's high country in two ...

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

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

A lobe of the polar vortex, a stormy ring that typically keeps ... Meanwhile, another snowstorm may form in Colorado, New Mexico and the southern Plains. This system has the potential to evolve ...