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

Still, several Colorado school districts will start late on Tuesday as the state waits out the last of subzero temperatures.

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

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

Colorado is getting ready to drop into a dangerous multi-day deep freeze. A surge from the Polar Vortex will be pushing below-zero temperatures across the region with several bursts of snow beginning ...

A polar vortex is currently hitting the United States, with schools closed in many areas and at least four deaths caused by ...

Research has found that rising temperatures in the Arctic are weakening weather systems that normally trap the cold around ...