Fishel: Sunday, Monday to be even hotter

But the National Weather Service has since canceled the heat advisory for most several central North Carolina counties.

TIPS: Ways to beat the heat

Sweltering heat is expected in many parts of the U.S. throughout weekend, according to forecasters.

The National Weather Service posted a reminder via social media to alert people that heat claims more victims every year than tornadoes, lightning and floods.

And the heat's not over yet, WRAL Chief Meteorologist Greg Fishel said.

"Temperatures are going to be as warm or warmer tomorrow than they were today," he said.

iControl Interactive Radar

But Fishel said air from the ocean will pause to the scorching temperatures in the next couple of days.

"Unfortunately, that brings a slight chance of showers on July 4," he said. "There's no reason to panic about those fireworks yet, but we could be dodging a few storms."

In California, thousands fled their homes as major wildfires encroached on a charred area of Northern California still recovering from severe blazes in recent years, sparking concern the state may be in for another destructive series of wildfires this summer.

Severe drought has already forced officials in several western states to close national parks as precautions against wildfires and issue warnings throughout the region to prepare for the worst.

In California, officials said unusually hot weather, high winds and highly flammable vegetation turned brittle by drought helped fuel the fires that began over the weekend, the same conditions that led to the state's deadliest and most destructive fire year in 2017.