Long Island weather: Heat advisory issued for region; will feel close to 100 degrees

The National Weather Service issued another heat advisory for most of Long Island on Sunday.

Both Nassau and Suffolk counties were expected to see temperatures in the high-80s and low-90s on Sunday, with the "feel-like" predictions as high as 99 degrees in Syosset, 101 degrees in Islip and 97 degrees in Riverhead, according to the NWS.

James Tomasini, a meteorologist with NWS, said unlike Saturday, Sunday would bring "mainly dry conditions."

"Stay hydrated, and if you’re doing something active, take breaks in a shaded area if possible," Tomasini said. "It has been several days of this heat, so it’s very important to stay hydrated."

The heat advisory was set to expire at 7 p.m. Sunday.

For those who work on outdoor jobs sites, the NWS advised people to take breaks as often as possible. Experts also advised New Yorkers not to leave children or pets in their cars this weekend, and to limit outdoor exercise.

Experts also encouraged people to drink beverages with electrolytes to protect against heat stress, apply sunscreen every two hours and wear lightweight, loose-fitting clothing.

Long Islanders may get on a break from the humidity Sunday afternoon, but the mugginess will likely pick back up on Monday when temperatures are expected to reach the upper-80s.

"Monday is also going to be a similar day," Tomasini said. "It will feel warm and humid outside ... With some greater chances for showers and thunderstorms" in the late afternoon and evening.