
Temperatures are set to soar in New York City and the Northeast this week as another wave of muggy weather sweeps across the eastern United States and southern Canada.
Temperatures in Central Park are expected to reach 90 degrees Fahrenheit (32 degrees Celsius) on Wednesday, with a possible high of 98 degrees Fahrenheit, the National Weather Service said. Heat warnings and extreme heat warnings are in effect across the Northeast and Mid-Atlantic from Delaware to Maine, extending into the Rockies, Great Plains, upper Midwest and even southern Canada.
A heat wave that swept through the eastern United States earlier this month put pressure on the power grid, disrupted Fourth of July holiday celebrations and brought stifling conditions to the World Cup soccer tournament.
“It’s not going to be as extreme as the Fourth of July weekend and it’s not going to last as long,” said Rich Otto, a forecaster with the U.S. Weather Prediction Center. “Tuesday and Wednesday will be the hottest two days, and then things will gradually cool down toward the end of the week.”
When people turn on air conditioners to cool down, high temperatures drive up energy demand. They also put pressure on transport networks, with rail expansion slowing train travel.
PJM Interconnection LLC, the largest U.S. power grid, and Midcontinent Independent System Operator Inc. have issued “hot weather” warnings for the coming days to ensure power plants are prepared for a surge in demand. Forward power prices in the east of the country were largely contained on Monday.
Commodity Weather Group says temperatures will be 3 to 8 degrees Fahrenheit above normal this week in the northern United States and southern Canada. Forecasters say the worst of the heat will shift to the Pacific Northwest starting Saturday.
new york heat
The National Weather Service says temperatures could reach as high as 104 degrees this week in Manhattan, the Bronx, Brooklyn, Queens and Staten Island due to humidity. “Homes without air conditioning can be much warmer than outside temperatures,” the agency warns.
The Weather Prediction Center said at least 60 daily heat records could be threatened, tied or broken as of Saturday. The agency said temperatures in New Brunswick, New Jersey, could reach 99 degrees on Wednesday, which would surpass the previous record for that day in 1995 of 98 degrees. The temperature in Boston could reach 97 degrees that day.
Nights will also become warmer, again increasing energy demands while placing stress on humans and animals that cannot recover from the daytime heat.
Environment and Climate Change Canada said yellow and orange heat warnings have also been issued across Canada from southeastern Alberta to Quebec, including in Toronto, North America’s fourth most populous city, where temperatures are expected to approach 99 degrees Fahrenheit on Tuesday.
Heat warnings and extreme heat warnings have also been issued across Southern California, including Los Angeles, with forecasts showing temperatures reaching 89 degrees on Tuesday and peaking at 95 degrees on Wednesday.
Picture: On July 3, during the high temperature in Brooklyn, New York, pedestrians in Brooklyn Bridge Park held umbrellas to protect themselves from the sun.
Copyright 2026 Bloomberg.
theme
New York
The most important insurance news, in your inbox every weekday.
Get the insurance industry’s trusted newsletter
