This July 4th could be hottest ever in parts of U.S. Maps show the forecast expected to break records. [View all]

Source: CBS News

Updated on: July 3, 2026 / 8:34 AM EDT


This July Fourth could be the hottest on record for millions of Americans as a massive heat wave traps more than half of the United States under a heat dome through the holiday weekend.

Dangerously high temperatures continued to ramp up Thursday from the Midwest to the East Coast, forecasters said.

Between daily high temperatures and warm overnight lows — which won't be low enough to offer much relief — more than 300 records are expected to be set by Saturday.


Read more: https://www.cbsnews.com/news/heat-wave-hottest-july-4th-record-temperatures/

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We were supposed to have a HUGE 2 mile parade through the historic area today here in Philly, where this country was founded, and it was initially shortened to 1 mile yesterday, then moved an hour earlier to start last night, and as of this morning, it's canceled due to the heat.

It is not even 9 am ET and my weather station is reading 91.