NYC Weather: Dangerous Heat Advisory Extended Into Friday

NEW YORK CITY — Summer's last, hot gasp isn't over yet for New York City.

A late summer wave will linger into a fourth day, prompting forecasters to extend a heat advisory to Friday at 6 p.m., according to the National Weather Service.

Hot and humid conditions could bring a heat index of 100 degrees across the city both Thursday and Friday, forecasters warned.

"There is an increased risk of heat-related illness for vulnerable
populations with this event," a National Weather Service briefing states.

Our latest briefing on the continued heat wave that continues today and tomorrow across the area. An isolated strong to severe thunderstorm threat also exists this afternoon/evening mainly NW of NYC. Click the link for the details: https://t.co/JFWLjMvVRs

Stay weather aware!
— NWS New York NY (@NWSNewYorkNY) September 7, 2023

And, as if the sweltering temperatures weren't enough, Mother Nature could wallop the city with thunderstorms starting Thursday evening.

The thunderstorm risk will extend through the weekend, according to the forecast.

The continued heat wave coincides with the first day of class for New York City public school students. Schools will limit outdoor activities between 10 a.m. and 6 p.m., officials said.

Here's the complete National Weather Service forecast for New York City.

Thursday
Sunny, with a high near 92. Heat index values as high as 97. Calm wind becoming south 5 to 9 mph in the afternoon.

Thursday Night
A 20 percent chance of showers and thunderstorms after 9pm. Mostly cloudy, with a low around 76. South wind 7 to 9 mph.

Friday
A 30 percent chance of showers and thunderstorms after 3pm. Partly sunny, with a high near 87. South wind 5 to 11 mph.

Friday Night
A 40 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 75. South wind 7 to 11 mph.

Saturday
A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 3pm. Partly sunny, with a high near 84. South wind 5 to 9 mph. Chance of precipitation is 60%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

Saturday Night
Showers likely and possibly a thunderstorm before 9pm, then a chance of showers and thunderstorms after 9pm. Mostly cloudy, with a low around 75. Chance of precipitation is 60%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

Sunday
A chance of showers and thunderstorms, then showers likely after 9am. Mostly cloudy, with a high near 80. Chance of precipitation is 60%.

Sunday Night
Showers likely, mainly before 9pm. Mostly cloudy, with a low around 71. Chance of precipitation is 60%.

Monday
A 40 percent chance of showers. Mostly cloudy, with a high near 79.

Monday Night
A 40 percent chance of showers before 9pm. Mostly cloudy, with a low around 68.

Tuesday
Mostly sunny, with a high near 79.

Tuesday Night
A 30 percent chance of showers. Mostly cloudy, with a low around 69.

Wednesday
A 40 percent chance of showers. Mostly cloudy, with a high near 74.