NATIONAL NEWS

Hot summer nights: US in July sets new record for overnight warmth

Aug 12, 2022, 6:38 PM
(KSL TV)...
(KSL TV)
(KSL TV)

Talk about hot nights, America got some for the history books last month.

The continental United States in July set a record for overnight warmth, providing little relief from the day’s sizzling heat for people, animals, plants and the electric grid, meteorologists said.

The average low temperature for the Lower 48 states in July was 63.6 degrees (17.6 Celsius), which beat the previous record set in 2011 by a few hundredths of a degree. The mark is not only the hottest nightly average for July, but for any month in 128 years of record keeping, said National Oceanic and Atmospheric Administration climatologist Karin Gleason. July’s nighttime low was more than 3 degrees (5.4 Celsius) warmer than the 20th century average.

Scientists have long talked about nighttime temperatures — reflected in increasingly hotter minimum readings that usually occur after sunset and before sunrise — being crucial to health.

“When you have daytime temperatures that are at or near record high temperatures and you don’t have that recovery overnight with temperatures cooling off, it does place a lot of stress on plants, on animals and on humans,” Gleason said Friday. “It’s a big deal.”

In Texas, where the monthly daytime average high was over 100 degrees (37.8 Celsius) for the first time in July and the electrical grid was stressed, the average nighttime temperature was a still toasty 74.3 degrees (23.5 Celsius) — 4 degrees (7.2 Celsius) above the 20th century average.

In the past 30 years, the nighttime low in the U.S. has warmed on average about 2.1 degrees (3.8 Celsius), while daytime high temperatures have gone up 1.9 degrees (3.4 Celsius) at the same time. For decades climate scientists have said global warming from the burning of coal, oil and natural gas would make the world warm faster at night and in the northern polar regions. A study earlier this week said the Arctic is now warming four times faster than the rest of the globe.

Nighttime warms faster because daytime warming helps make the air hold more moisture then that moisture helps trap the heat in at night, Gleason said.

“So it is in theory expected and it’s also something we’re seeing happen in the data,” Gleason said.

NOAA on Friday also released its global temperature data for July, showing it was on average the sixth hottest month on record with an average temperature of 61.97 degrees (16.67 degrees Celsius), which is 1.57 degrees (0.87 degrees Celsius) warmer than the 20th century average. It was a month of heat waves, including the United Kingdom breaking its all-time heat record.

“Global warming is continuing on pace,” Colorado meteorologist Bob Henson said.
___

Follow AP’s climate and environment coverage at https://apnews.com/hub/climate-and-environment
___
Follow Seth Borenstein on Twitter at @borenbears
___
Associated Press climate and environmental coverage receives support from several private foundations. See more about AP’s climate initiative here. The AP is solely responsible for all content.

KSL 5 TV Live

Top Stories

National News

FILE PHOTO - (Deseret News)...
Andy Rose, CNN

Colorado police release video of police car with suspect inside hit by a train

Colorado police released videos that show a suspect who was detained by police and placed inside a police cruiser that was hit by a train.
19 hours ago
President Joe Biden presents Elton John with the National Humanities Medal after a concert on the S...
Shawna Mizelle and Sam Fossum, CNN

Biden surprises Elton John with National Humanities Medal at White House

President Joe Biden on Friday presented Sir Elton John with the National Humanities Medal, surprising the music icon following a performance on the South Lawn of the White House.
19 hours ago
John Cena has completed a new accomplishment: breaking the world record for most wishes granted thr...
Zoe Sottile, CNN

John Cena breaks Make-A-Wish record after granting 650 wishes

Actor, wrestling legend, and perpetual meme subject John Cena has completed a new accomplishment: breaking the world record for most wishes granted through the Make-A-Wish Foundation.
19 hours ago
Americans Alexander John-Robert Drueke, right, and Andy Tai Ngoc Huynh, left, are pictured here aft...
Kylie Atwood, CNN

2 Americans captured by Russian-backed forces are back on US soil

Two Americans who had been held by Russian-backed forces for more than three months were back on US soil Friday afternoon.
19 hours ago
Post-tropical storm Fiona in Irish Cova, Nova Scotia on Cape Breton Island in Canada Sept. 24, 2022...
ROB GILLIES Associated Press

Fiona washes houses away, knocks out power in Canada

Strong rain and winds are lashing the Atlantic Canada region as Fiona hits as a powerful post-tropical cyclone. Canadian forecasters are warning it could be one of the most severe storms in the country's history. Fiona made landfall in Nova Scotia before dawn Saturday after transforming from a hurricane into a post-tropical cyclone. Forecasters caution that despite the change, Fiona still has hurricane-strength winds and will bring drenching rains and huge waves. More than 500,000 customers in Atlantic Canada are affected by outages. Ocean waves pounded the town of Channel-Port Aux Basques on the southern coast of Newfoundland, where entire structures were washed into the sea.
19 hours ago
An illustration shows NASA's DART spacecraft and the Italian Space Agency's LICIACube prior to impa...
Ashley Strickland, CNN

What will be visible when DART spacecraft crashes into tiny asteroid

The NASA Double Asteroid Redirection Test aims to make history on Monday at 7:14 p.m. ET when it slams into Dimorphos, a tiny asteroid moon orbiting the larger asteroid Didymos.
2 days ago

Sponsored Articles

young woman with stickers on laptop computer...
Les Olson

7 ways print marketing materials can boost your business

Custom print marketing materials are a great way to leave an impression on clients or customers. Read for a few ideas to spread the word about your product or company.
young woman throwing clothes to organize a walk in closet...
Lighting Design

How to organize your walk-in closet | 7 easy tips to streamline your storage today

Read our tips to learn how to organize your walk-in closet for more storage space. These seven easy tips can help you get the most out of your space.
Types of Computer Malware and Examples...
PC Laptops

5 Nasty Types of Computer Malware and Examples | Everything You Need to Know to Keep Your Computer and Family Safe

Here are the different types of computer malware and examples that could potentially infect your computer.
tips how to quit smoking...

7 Tips How to Quit Smoking | Quitting Smoking Might be One of the Hardest Things You Ever Do but Here’s Where You Can Start

Quitting smoking cigarettes can be incredibly difficult. Here are 7 tips how to quit smoking to help you on your quitting journey.
Photo: Storyblocks...
Blue Stakes of Utah 811

Blue Stakes of Utah 811: 5 Reasons To Call 811 Before You Dig When Working in Your Yard

Call before you dig. Even at home, you could end up with serious injuries or broken utilities just because you didn't call Blue Stakes of Utah 811.
Days of...
Days of '47 Rodeo

TRIVIA: How well do you know your rodeo? Take this quiz before you go to the Days of ’47!

The Utah Days of ’47 Rodeo presented by Zions Bank is a one-of-a-kind Gold Medal Rodeo being held July 20-23, 25 at 7:30 PM. The Days of ’47 Rodeo How well do you know your rodeo trivia? Take the quiz to test your know-all before heading out to the Days of ’47 Rodeo at the […]
Hot summer nights: US in July sets new record for overnight warmth