©iStock/Sabine HortebuschThis 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 ramped up Wednesday (7/1/26) 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, July 4, 2026.
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| ©iStock/Sabine Hortebusch |
Dangerously high temperatures ramped up Wednesday (7/1/26) 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, July 4, 2026.
