Now that the rain is gone, it’s time to complain about the brutal heat and humidity.

Hazy, hot and humid conditions are on the way for Thursday — when it will possibly feel like a sweltering 100 degrees.

A true taste of summer is on tap with some nasty humidity, as a cold front brings the potential for severe thunderstorms in the afternoon and evening.

“It will be our first really, really hot and humid day of the season,” said Caitlyn Mensch, meteorologist at the National Weather Service’s Boston office.

Dewpoints will spike into the 70s, bringing the heat index “feels like” value to around 100 degrees.

The National Weather Service has issued a “heat advisory” for much of the region, warning that hot temps and high humidity may cause heat illnesses.

Mensch urged people to remain hydrated and to stay in an air-conditioned room. Wear lightweight clothing, and try to limit strenuous activities to early morning or evening, she added.

“Potentially dangerous heat Thursday afternoon with areas across southern New England experiencing ‘feels like’ temperature between the upper 90s into the lower 100s,” reads the NWS Boston forecast discussion, which adds, “It will be humid, dewpoints in the lower 70s is ‘air you can wear.’ ”

Also on Thursday, severe thunderstorms will be possible in the late afternoon and evening as a cold front moves through.

Damaging wind gusts will be the main threat — with large hail, a brief tornado and localized street flooding also possible.

Meteorologists anticipate the main threat for severe weather will begin after 3 p.m. in western New England, and particularly in the 5 to 9 p.m. timeframe as a line of storms.

“While the greater threat for severe weather is mainly west of I-95/I-495, some threat is possible toward sundown in the Boston to Providence corridor, especially if convection can get going sooner,” reads the NWS Boston forecast discussion.

“Those with plans outside during the afternoon, especially from the Berkshires/Litchfield Hills eastward to MetroWest, will want to keep close tabs on the forecast for the afternoon,” NWS Boston adds.

After the brutally hot and humid Thursday, it should be seasonably warm but less humid on Friday into Saturday — with temps in the 80s.

Then a multi-day stretch of significant heat is expected early next week.

“We may begin to see temperatures return into the 90s on Sunday, but the heat peaks in the Mon thru Wed timeframe,” NWS Boston wrote. “Latest ensembles continue to point to heat and humidity levels at least as high as Thurs, if not higher, and also over a stretch of a few days. Heat headlines could be needed at some point if confidence continues to increase.”