FOX Weather] On Tuesday, the 48 contiguous US states are expected to experience an average low of 16.6 degrees Fahrenheit (minus 8.6 Celsius) and that may fall to 14 degrees Fahrenheit (minus 10 Celsius) by Wednesday, according to Ryan Maue, a former National Oceanic and Atmospheric Administration chief scientist.
A polar vortex of Arctic air extends from the top of the world south typically two or three times per winter, according to Atmospheric and Environmental Research seasonal forecast director Judah Cohen.
The Arctic air is forecast to cause temperatures to dip 30 to 40 degrees Fahrenheit below average for this time in the winter, according to FOX Weather.
Every state except California, Florida and Hawaii has a high chance of windchills of 20 degrees Fahrenheit or below next week, per the National Weather Service.
The tenth and coldest polar vortex of the season is blasting across the US this week.
