Transcript for Unseasonable Weather: Highs and Lows Across US
I'm so glad to be on the warm side of what we're about to show you. Out west, it's been crazy. You see icicles like this, okay, maine, all right, vermont. This is scottsdale, arizona. Look at the trees. Look at the jet stream. This unusual position with a giant dip. You should see it down here. Allowing korld air all across the planet. We have more than 300 record-high temperatures on the east coast and the cold air to the west. It makes the january images jarring. It looks like a map flip this morning. Below freezing temperatures in the usually warmer left. The east coast, record highs. Sandwiched in between, a weekend of severe storms. In tennessee, strong winds tore through. It has to be. Reporter: The worst part of the crisscrossed weather is along the california coast. Temperatures down so far that frost is threatening the $1.5 billion citrus crop. On san diego beaches, wrapping up in wirnt coats. We're coming from chicago, illinois. I was hoping to have a break from the cold weather there. Not turning out that way. Reporter: Residents needed a thermal layer. The derts town of thermal reached a low of 20 degrees. A record. At this resort in scottsdale, arizona, icicles on a fountain. In the eastern half of the country, people shedding coats for shorts. I like to get outside as much as possible. Reporter: In eight states in the southeast, temperatures REACHED THE 80s ON SUNDAY. I'm a skier, so I'm disappointed. Reporter: As someone who just got back from vegas, it's jarring when the temperatures ARE IN THE 30s IN THAT AREA. Slowly, the cold air moves to the east. We'll talk more about that in the next half hour. George?
This transcript has been automatically generated and may not be 100% accurate.