Boston Breaks July 19 Heat Record — 99 Degrees

Boston has a new heat record for July 19.

Just after 1 p.m. Friday, the temperature reached 99 degrees at Logan International Airport, according to the National Weather Service. The previous July 19 high was 98 degrees in 1982.

An excessive heat warning for much of eastern Massachusetts is in effect until 7 p.m. Friday.

Throughout the warning, NWS meteorologist Benjamin Sipprell is advising people to avoid strenuous outdoor activity, seek out air conditioning or cooling centers, drink lots of water, and wear lightweight clothing.

"This is now the sixth day of the heat wave and this is the hottest conditions that we're going to be experiencing," Sipprell said Friday morning. "And this can be a very life-threatening and dangerous situation, especially for the young and the elderly."

The city of Boston opened several cooling centers around the city and encouraged residents to visit pools and spray decks.

Temperatures Saturday are forecast in the low-90s, with a chance of thunderstorms. Sunday should be cooler and drier, with a return to more seasonable conditions.