“ Not your grandparents’ Summers’ ‘: 70 million Americans on the East Coast have just had the most soft June and July in history

And this meant uncomfortably hot and potentially dangerous nights in many cities in recent weeks, said National Weather Service.

Parties of 27 states and Washington, DC, have experienced a record number of days that meteorologists call uncomfortable – with daily daily dew points of 65 degrees fahrenheit or more – in June and July, according to data derived from Copernicus Climate Service.

And it’s just the daily average. In a large part of the east, the evil continued to climb to near tropical levels for a few humid hours. Philadelphia had 29 days, Washington had 27 days and Baltimore had 24 days when the highest dew point simmered at least 75 degrees, that even the Tampa meteorological services office calls oppressive, according to the meteorological service.

The dew point is a measure of humidity in the air expressed in degrees that many meteorologists call the most precise means of describing humidity. The summer of 2025 so far has had dew points which on average at least 6 degrees higher than the normal from 1951-2020 in Washington, Baltimore, Pittsburgh, Richmond, Columbus and St. Louis, according to the AP calculations. The average humidity of June and July for the whole country in the east of the Rockies has reached more than 66 degrees, more than any year since the start of the measures in 1950.

“It was a very difficult summer. The wet heat was on the rise,” said Bernadette Woods Placky, Chief Meteorologist in Central Climate.

Cameron Lee, Cameron Lee of Kent State University, twice this summer, measured dew points of around 82 degrees in his weather station in Ohio. It is outside the different graphics that the weather service uses to describe what the dew points feel.

“There are parts of the United States who know not only greater average humidity, especially in spring and summer, but also more extreme wet days,” said Lee. He said that the super sticky days are now extending over more days and more land.

High humidity does not allow the air to cool the night as usual, and the adhesiveness has contributed to several night temperature records of the Ohio valley through the middle of the Atlantic and the coastal states from top to bottom, declared Zack Taylor, chief of forecast operations at the National Weather Service meteorological prediction center. Raleigh, Charlotte, Nashville, Virginia Beach, in Virginia, and Wilmington, NC, all have reached records for the hottest nights. New York, Columbus, Atlanta, Richmond, Knoxville, Tennessee and Concord, New Hampshire has come closer, he said.

“What really has an impact on the body is this night temperature,” said Taylor. “So, if there is no cooling at night or if there is a lack of cooling, it does not allow your body to cool off and recover from what was probably a really hot afternoon. And therefore when you start to see it over several days, it can really exhaust the body, especially of course if you do not have access to cooling centers or on condition of the condition of air.”

A very hot and rainy summer weather model combines with climate change compared to the combustion of coal, oil and natural gas, said Woods Placky.

The area east of the Rockies has earned an average of 2.5 degrees in summer dew since 1950, according to Copernic’s data analysis. In the 1950s, 1960s, 1970, 1980 and part of the 1990s, the eastern half of the country had an average dew point in the 1960s, which the meteorological service called notable but OK. In the past four of the six years, this number has been close and even on the uncomfortable line of 65.

“It’s huge,” said Lee about the 75 -year -old trend. “This shows a massive increase compared to a relatively short period of time.”

This apparently low increase in average dew points really means the worst ultra-good days that occur once a year, now occur several times a summer, which affects people, said Lee.

Higher humidity and heat feed on each other. A fundamental law of physics is that the atmosphere has 4% more additional water for each degree Fahrenheit (7% for each degree Celsius) it obtains, said meteorologists.

For most of the summer, the Midwest and the East were stuck under incredibly hot high pressure systems, which increased temperatures, or obtain heavy and persistent rains in much higher quantity than the average, Taylor said. What was mainly missing was the occasional fresh forehead that pushes the most oppressive heat and humidity. It finally came in August and caused relief, he said.

Humidity varies according to the region. The West is much drier. The South obtains more degrees at 65 degrees in summer than the north. But it changes.

Professor Marshall Shepherd, professor of meteorology at the University of Georgia, said that uncomfortable humidity moves further north, towards places where people are less used to it.

Summers now, he said, “are not the summers of your grandparents.”

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Borenstein reported Washington and Wildeman reported to Hartford, Connecticut.

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