‘Nothing but hot weather ahead’: Here’s how hot it’s supposed to get over the next few weeks

The National Weather Service weighs in on whether Boston will see a heat wave.

–John Tlumacki/Globe Staff

The middle to second half of July is forecasted to be hot, but the National Weather Service is hesitant to say Boston will enter an actual heat wave.

Temperatures are expected to be in the high 80s and low 90s over the weekend and into next week.

“Nothing but hot weather ahead,” WBZ meteorologist Barry Burbank said.

But will it be a heat wave? For Boston, that’s questionable, Benjamin Sipprell, a meteorologist with the service, said. A heat wave is defined as temperatures in the 90s or higher for three consecutive days or more.

“So give or take, I’d hate to say there’s going to be a heat wave in the future,” he said.

Advertisement

The reason is potential sea breeze, which can lower the temperature. But that doesn’t mean conditions will be comfortable. The average high temperature for this time of year is in the low 80s for Boston, Sipprell said. The high temperatures peak between July 16-20. After that, it starts to go down for the end of the month into August.

“I would say that we’re going to be dealing with a pretty long stretch on the order of a couple of weeks where it’s going to be hot and humid,” he said, adding that there’s potential for some “brief reprieves” — the humidity drops a bit after a thunderstorm.

“Will we see a heat wave through all that? It’s not out of the question,” Sipprell said. “It depends on where.”

Considering the southeastern coast, he said a sea breeze could interrupt a potential heat wave. But for places like Worcester and Springfield, where there’s “less marine influence,” Sipprell said he would “not rule it out.”

“I would not say this is abnormal,” he noted of the upcoming forecast.

Now if the region saw two or three days of triple-digit temperatures, that would be unusual. An observer in Jamaica Plain recorded two days of temperatures 100 degrees or greater back in early July, 1999, Sipprell said. For the service, its observing center at Logan airport last recorded a two-day stretch of temperatures in the triple digits back on Aug. 12 through Aug. 13, 1944.

Advertisement

Meteorologist David Epstein noted that both American and European weather prediction models show temperatures in the high 80s and low 90s throughout the next couple of weeks, perhaps even reaching 100 degrees on July 18 for one model and over 100 degrees on July 20 for the other.

“July doing its thing (on average, hottest month of the year),” Jeremy Reiner, a meteorologist with WHDH, said.

He predicts temperatures in the 90s on Saturday and high 80s on Sunday.

“Temps in New England likely to soar into the 90s (perhaps approach 100 in some locations mid-late next week),” he said in a subsequent tweet. “Very warm overnight temps as well.”