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When will the heat wave in Massachusetts end?
When will the heat wave in Massachusetts end?

BOSTON – It was almost a week of extreme heat, with highs ranging from 86 to 95 degrees Fahrenheit in the Boston area and most of Massachusetts.

We are racing toward one of the wettest months on record, currently just past July 2023.

Record heat?

However, the temperatures are far from being record-breaking. We are not talking about 100 degrees Celsius like in back in 2022 and was almost back in JuneBut this time the heat and humidity are more relentless.

Unfortunately, we still have a LONG way to go before we get real relief.

The next few days are similar – highs in the 30s with dew points around 24 degrees, about the same as here. That’s rare, something that’s normal in the South in cities like New Orleans.

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At the moment, there is no fresh, clear air mass on the way to Canada to save the day.

Looking at the feels for the next seven days, temperatures in the Boston area never drop below 90 degrees. In fact, we expect things to get worse before they get better. It looks like we’ll see another spike in heat and humidity early next week.

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What is an official heatwave?

Many people have asked themselves this question. The short answer is: Does it really matter?

An official heat wave in the Northeast is roughly defined as at least three consecutive days of temperatures of 90 degrees or more.

So, according to the regulations, there is NO heat wave in Boston or Worcester. During the current heat wave, temperatures there have not even reached 90 degrees!

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However, if you travel a little further north and west in Massachusetts, temperatures are several degrees warmer. In fact, places like Bedford, Fitchburg, and much of the Merrimack Valley have been experiencing an official heat wave since Tuesday.

Pretty silly, right? I agree. That’s why I think we shouldn’t focus too much on whether it’s a heatwave or not.

You can find all sorts of definitions of a heat wave on the internet. Three days of 90-degree heat in places like Dallas or the desert southwest of the United States could be considered a “cool down.”

The National Weather Service defines it as “a period of unusually hot weather generally lasting more than two days…with or without high humidity.”

Basically, everything is relative. Each region of the country and the world defines its heat waves based on its typical weather or climatology.

When will the heat wave end?

The bottom line is that the Boston area will be uncomfortably hot and humid for at least the next seven days.

The best guess as to when this pattern will end is probably sometime next week. Most models suggest a cooler and drier air mass will arrive around next Thursday, July 18. That’s still a long way off and things could easily change.

I also expect that the current pattern will probably repeat itself several times during the rest of the summer. The oceans are extraordinarily warm, La Niña is approaching and several factors are coming together that lead us to conclude that heat and humidity are here to stay.

By Aurora