A heat advisory issued for parts of Long Island has been extended through Wednesday evening, according to the National Weather Service.

The advisory also covers parts of New York City, northeast New Jersey and Connecticut. The advisory for Nassau and Northwest Suffolk counties, lasts through 8 p.m. Wednesday, according to the weather service's website.

“The North Shore is more likely to feel hotter because they’re more likely to get the sun, they’re less likely to be influenced by the sea breeze,” said Matt Wunsch, a meteorologist with the weather service's Upton office. 

Patchy fog is forecast before 8 a.m. Wednesday. Afternoon temperatures are predicted to reach a high of 83 degrees amid mostly cloudy conditions. There's a 30% chance of overnight showers and thunderstorms with a low about 73.

Wunsch said despite recent temperatures and “oppressive” humidity levels that make temperatures feel even higher, Long Islanders are probably not experiencing a heat wave, which would require three consecutive days over 90 degrees.

“The South Shore was socked in clouds for most of the day, whereas the North Shore had sun most of the day,” Wunsch said. “If you’re looking at Islip, technically we’re not in a heat wave, but obviously in the city they’re definitely in a heat wave. Nassau and Northwestern Suffolk is that middle zone.”

The record high in Islip for July 10 was recorded in 1993, when the temperature hit 98.

Wunsch said Long Islanders will have to endure humid conditions for a few more days.

“It’s probably not until this weekend where we get some kind of reprieve from the dew point, the mugginess,” Wunsch said. “For the most part, the moisture is here to stay for the foreseeable future, likely through the first half of the weekend.”

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