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The Boston Globe

Metro

Heat wave in Boston likely to last until Sunday

No relief from the heat is in sight, with the third official heat wave for Boston declared at 10:23 a.m. when temperatures crested 90 degrees at Logan Airport, according to the National Weather Service.

This hot and humid weather won’t relent anytime soon, with the heat wave likely to slog on until Sunday, the weather service said.

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Skies will be blue and clear today, with a high near 92 in Boston, according to the weather service. Dew points will subside slightly today, dropping from the low 70s to high 60s, but it will still be uncomfortably humid.

Still, the humidity levels will be high enough so that temperatures statewide could feel like 100 degrees today, according to the weather service. The hottest temperatures today will occur in the late afternoon and early evening.

Temperatures this morning are ranging from the low 70s to near 80, a slightly warmer start than previous mornings. Noting this, temperatures should easily climb into the low to mid-90s in Southeast Massachusetts and around Springfield, the weather service said. Both these areas are included in a heat advisory in effect until 7 p.m. this evening.

The City of Boston will open cooling centers throughout the city today. Tips on how to stay cool and the location of cooling centers can be found on the city’s webpage.

“We will look at extending cooling center hours into the evening this week,” said Emilee Ellison, a spokeswoman Mayor Thomas M. Menino.

Menino announced a series of “cool down events” will also take place throughout the city today, including a number of free ice cream parties and the deployment of a mobile cooling caravan. Details on those events are also available on the city’s webpage.

The Massachusetts coast will likely see a sea breeze develop again today, prompting temperatures to dip a into the high 80s in the afternoon. Tonight temperatures will moderate into the 70s but remain humid, according to the weather service.

Temperatures should remain in the low 90s Wednesday through Friday, with a heightened chance of showers and thunderstorms for the end of the week. Heavy rain and gusty winds are possible Thursday, with around a tenth of an inch of rain likely Thursday afternoon around Boston, according to the weather service.

Northern Massachusetts could see hail Thursday, if conditions organize properly, the weather service said.

Friday will see temperatures in the low 90s, with a diminished chance of precipitation.

Saturday has a 30 percent chance of precipitation around Boston, but temperatures are still expected to reach 90 degrees, according to the weather service.

Sunday will see dry weather, with temperatures and humidity levels diminishing.

“We are going to start heading toward near normal temperatures around 83 or 84 degrees Sunday,” Meteorologist Bill Simpson said.

Jasper can be reached at jasper.craven@globe.com or on Twitter @Jasper_Craven
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