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These maps show what to expect from this weekend’s heat and humidity in southern New England

High temperatures in the 90s are expected to continue Saturday and Sunday throughout southern New England, and some locations may see 100 degrees on Sunday.

The National Weather Service issued a heat advisory for the weekend, and in Boston, Mayor Michelle Wu extended the heat emergency through Sunday.

Across the state, “oppressive heat and humidity” will continue into the weekend and Monday, forecasters said in an online forum.

These maps show what to expect throughout the region in the next few days.

Forecasters expect high temperatures in the 90s across the region on Saturday, including 96 degrees in Boston and 97 degrees in Bedford and Taunton. Martha’s Vineyard, Nantucket, and locations on Cape Cod may see highs in the 80s.


Locations in Rhode Island and Connecticut will see highs in the 90s as well.

Saturday's high temperatures will see areas in the 90s again.NWS

Temperatures will be even hotter in some places on Sunday, with Lawrence and Newburyport expected to see 100 degrees. Boston’s high is expected to be 99 degrees as well as locations west and northwest of Boston. Areas from Springfield to Greenfield could register temperatures in the high 90s.

Skies on Saturday and Sunday will feature sunshine with some clouds. Winds are expected to be 5 to 10 mph.

Locations in eastern Massachusetts will continue to be in the 90s on Sunday.NWS

The weather service has issued a heat advisory for most of Massachusetts and all of Rhode Island and Connecticut this weekend, with high temperatures elevating the risk of heat exhaustion for those exposed. Anyone working or spending extended time outside is urged to take extra precautions.

The heat advisory is in effect from Saturday at 11 a.m. until Sunday at 8 p.m. with heat index values — or what the temperature feels like — expected to rise into the 100s in some areas.

The heat index will be 100 or greater in some places into Monday.NWS

Forecasters warned that, with temperatures predicted to reach the low 100s and heat indices to be higher, the heat advisory could be changed to excessive heat warnings in some locations.


A heat advisory has been issued for much of Massachusetts, Rhode Island, and Connecticut for Saturday and Sunday.National Weather Service

Forecasters expect a “slow moving cold front will bring a round of showers and thunderstorms Sunday night and Monday.”

According to the weather service, the region will cool off slightly next week, but temperatures are expected to remain “above normal” until the end of the month.

Scientists have not attributed this bout of scorching weather to climate change. But there is ample evidence that the climate crisis is increasing the frequency and severity of heat waves.

As climate change progresses, experts project that periods of extreme heat are likely to increase. From 1971 to 2000, the average summer in Massachusetts saw four days over 90 degrees. By mid-century, climate scientists say the state may have 10-28 days over 90 degrees each year. By the end of the century, Massachusetts could experience between 13 and 56 days of extreme heat each summer, depending on what steps are taken now to decrease greenhouse gas emissions.

Shealagh Sullivan can be reached at shealagh.sullivan@globe.com. Follow her on Twitter @ShealaghS.