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Bring on the heat: It’s going to feel hotter than 100 degrees

A pair of feet hung out a car window on Beacon Street in Cleveland Circle on Tuesday.Suzanne Kreiter/Globe staff

Temperatures in the 90s and high humidity combined Tuesday to make it feel like it was more than 100 degrees in many parts of the state.

The National Weather Service issued an excessive heat warning that will remain in effect until 9 p.m. Wednesday.

At 4 p.m., the temperature was 96 degrees in Boston. With a dewpoint of 70, it felt like it was 102 degrees.

“The heat and humidity may cause heat stress during outdoor exertion or extended exposure,” the weather service said. “Take extra precautions, if you work or spend time outside. When possible, reschedule strenuous activities to early morning or evening. Know the signs and symptoms of heat exhaustion and heat stroke. Wear light weight and loose fitting clothing when possible and drink plenty of water.”


“Warm and humid conditions expected tonight as winds diminish,” forecasters said. “Lows will only fall back into 70s, if not around 80 in larger cities.”

The sweltering conditions will continue into Wednesday, which will be sunny and hot, with highs in the upper 90s. Wednesday night will also be warm and muggy, with lows only dipping into the mid-70s, forecasters said. Thursday’s high temperatures are expected to be in the 80s.

Then we should get some relief from the heat as cooler weather is expected for Friday and the weekend. Forecasters said the chances for showers or a thunderstorm increase Thursday as a cold front moves through the area.

“This front stalls south of our region Friday,” forecasters said. “This will bring a break from the heat, but may allow for a few showers Friday and into this weekend towards the south coast of New England.”

Friday and Saturday should be noticeably cooler and less humid, with highs in the 70s.

Martin Finucane of the Globe staff contributed to this report. Emily Sweeney can be reached at esweeney@globe.com. Follow her on Twitter @emilysweeney.