Over 70 million people are under frost or freeze advisories across the country as far south as the Gulf Coast and Florida.  

WATCH FOR FIREBALLS: ORIONIDS METEOR SHOWER EXPECTED TO PEAK THIS WEEK

U.S. frost

Frost and freeze alerts across the U.S. (Credit: Fox News)

The U.S. will break record cold highs on Tuesday for many big cities.

Record fall cold highs

Record fall cold high temperatures (Credit: Fox News)

Moderate-to-heavy snow is slated for the upper peninsula of Michigan.  

Great Lakes

The Great Lakes, Northeast futuretrack (Credit: Fox News)

Parts of the eastern Great Lakes and interior Northeast will see the first snow of the season on Wednesday. 

Texas futuretrack

The Texas futuretrack (Credit: Fox News)

Showers and thunderstorms will pop up along the tail end of a cold front draped across Texas and stretching through Florida.  

Northwest front

A pattern-changing front forecast for the Northwest (Credit: Fox News)

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Another day of above-average temperatures is set for the Northwest, but there is a pattern change coming later in the week which will usher in colder air and snow for the mountains.