Another will bring even more in the coming days, as overnight temperatures won’t provide much relief.
The National Weather Service is predicting that more than 90 temperature records across the U.S. this week through Wednesday 鈥� and most of those will be overnight heat records.
Health experts say overnight temperatures that fail to cool down are even more dangerous than daytime temperatures that soar.
It has already been a sweltering start to the summer across much of the U.S. due to the long-lasting expected to blanket much of the country this week. The blistering temperatures over the past few weeks have caused in New Jersey and in the West.
No relief from the heat at night this week
Temperatures were not forecast to drop below 80 F (27 C) at night in Fort Lauderdale, Florida; Miami; Tampa, Florida; Galveston, Texas; and Charleston, South Carolina, the National Weather Service said.
Over the next few days, places in the Midwest and Northeast known for frigid winters will see nighttime temperatures remain above 70 F (21 C), including Fargo, North Dakota; International Falls, Minnesota; and Portland, Maine.
Hot temperatures at night pose a bigger danger
Health experts say that high overnight temperatures are particularly dangerous because there’s no time for the body’s core temperature to cool down and recover from daytime heat.
鈥淭hat鈥檚 where the health outcomes are amplified, particularly for the elderly and vulnerable communities,鈥� said University of Georgia meteorology professor Marshall Shepherd.
Just a few degrees of increased body temperature can lead to heatstroke or put too much strain on the heart.
Dangers of heat can sneak up on you
If temperatures at night don’t cool down your body, the health risks more often show up the next day, said Kristie Ebi, a public health and climate scientist at the University of Washington.
鈥淢ortality starts the second or third day” because the body’s unable to cool, she said on Monday.
Being proactive is crucial during a heat wave
Early warning signs include heavy sweating, muscle cramps and headache. 鈥淚t鈥檚 hard to know you鈥檙e getting in trouble with the heat. This is why we need to be more proactive,” Ebi said.
It’s important to find a way to cool off, whether stepping into air conditioning or wrapping a cold towel around your neck.
And health experts say don’t forget to check in on friends and family members, especially those who are older, pregnant or who have health challenges that might make it more difficult to handle the heat.
How to beat the heat without air conditioning
Even without air conditioning at home, there are .
Stop by a library or a mall. Sit in front of a fan and spray water on your skin. Put your feet in cold water. Soak your clothes in water. And of course, drink plenty of water.
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Associated Press reporter Seth Borenstein in Washington contributed.
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