"A heat wave blanketing the northeastern United States is expected to move west after the Fourth of July, bringing dangerous temperatures as far as southern California, the National Weather Service (NWS) said on Tuesday.

An excessive heat warning is in effect through Tuesday night, with heat index values – which combine temperature and humidity – in New York City reaching 106 degrees Fahrenheit (41°C).

A seven-day heat wave, which the NWS said occurs approximately once every 33 years, began in New York on Saturday. Parts of New England experienced record-setting temperatures over the weekend, said Dan Petersen, an NWS meteorologist.
A man cools off in fountain on the Rose Kennedy Greenway during a summer heat"

Diana Kruzman reports for Reuters July 3, 2018. [2]

SEE ALSO:

"U.S. Northeast grids monitoring heat wave, say power is sufficient" (Reuters) [3]

"Six Dead In Montreal Since Start Of Heat Wave: CBC News" (Reuters) [4]