NYC Weather: Cooldown Coming After Excessive Heat Hits One More Day

NEW YORK CITY — A cooldown is finally coming to New York City, but sweaty city dwellers first will have to contend with one more day of excessive heat, forecasters say.

A heat advisory remains in effect Tuesday until 8 p.m., according to the National Weather Service.

The heat index is expected to hit as high as 100 degrees while sunny weather gives way to potential heavy rain, the National Weather Service's forecast states.

Heavy rain and thunderstorms stay in the forecast through Thursday, but sweltering heat will not. A so-called "Bermuda high" pressure system offshore that has ratcheted by heat and humidity over the past few days will finally dissolve, forecasters said.

"Thereafter the weather pattern will break down resulting in gradually lowering temperatures and humidity through Wednesday and into Thursday," a National Weather Service story states.

Highs on Wednesday will hover near 78 degrees — a much cooler-seeming temperature range that forecasters expect to stick around into next week.

Only Thursday is expected to crack 80 degrees, and even then it'll be barely so, according to the forecast.

New Yorkers excited by the cooler temperatures this week likely will have to contend with rain, some of which could be heavy, the forecast states.

Here's the complete National Weather Service forecast.

Tuesday
A 50 percent chance of showers and thunderstorms, mainly after 3pm. Some of the storms could produce heavy rain. Mostly sunny, with a high near 90. Heat index values as high as 96. West wind 10 to 14 mph.

Tuesday Night
Showers likely and possibly a thunderstorm before 9pm, then a chance of showers and thunderstorms between 9pm and 3am. Some of the storms could produce heavy rain. Mostly cloudy, with a low around 76. North wind 7 to 9 mph. Chance of precipitation is 60%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

Wednesday
A 50 percent chance of showers and thunderstorms, mainly after 3pm. Partly sunny, with a steady temperature around 78. North wind 5 to 7 mph.

Wednesday Night
A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 9pm. Some of the storms could produce heavy rain. Mostly cloudy, with a steady temperature around 78. Southeast wind 5 to 9 mph becoming southwest after midnight. Chance of precipitation is 70%. New rainfall amounts between a quarter and half of an inch possible.

Thursday
Showers likely and possibly a thunderstorm before 9am, then a slight chance of showers between 9am and 3pm. Some of the storms could produce heavy rain. Partly sunny, with a high near 81. North wind 5 to 7 mph. Chance of precipitation is 60%. New precipitation amounts between a quarter and half of an inch possible.

Thursday Night
Partly cloudy, with a low around 71.

Friday
Sunny, with a high near 78.

Friday Night
Mostly clear, with a low around 67.

Saturday
Sunny, with a high near 77.

Saturday Night
Mostly clear, with a low around 68.

Sunday
Mostly sunny, with a high near 79.

Sunday Night
Partly cloudy, with a low around 71.

Monday
Mostly sunny, with a high near 78.