Temperatures Tuesday could possibly come in a degree or so cooler than those of Monday, but that humidity will continue to make for steamy conditions, forecasters say.
Look for temperatures to head up to the high 80s to low 90s — with heat index values — what it feels like given the humidity — in the mid- to upper 90s to around 100 degrees, the National Weather Service said. The worst of it comes in the afternoon and evening hours.
A heat advisory remains in effect through 9 p.m. Tuesday for Nassau County and western Suffolk — that’s west of the William Floyd Parkway. Such an advisory is issued when the combination of heat and humidity is expected to make it feel like 95 to 99 degrees for two or more consecutive days, or 100 to 104 degrees for any length of time.
These conditions can “cause heat stress during outdoor exertion or extended exposure,” the weather service said.
We could see a slight break on Wednesday, the Fourth of July, as an approaching cold front means chances of showers and thunderstorms, with highs around the mid-80s and feels-like temperatures in the lower 90s, said Joe Pollina, weather service meteorologist in Upton.
Still, he said, the real reprieve isn’t expected until the weekend, which sees the arrival of a Canadian air mass.
Temperatures topped out in the mid-90s Sunday at Long Island MacArthur Airport and will barely reach over 90 Monday, the weather service said.
The hottest areas will be west of the William Floyd Parkway, News 12 Long Island meteorologist Rich Hoffman said.
“There will be a sea breeze, but it will be a scorcher today. It feels like a steam bath outside this morning,” Hoffman said.
The daytime high temperatures for the rest of the week will be in the mid- to upper-80s, but there should be some relief by next weekend, when temperatures are expected to hover at or just below 80 degrees, the weather service said.
It should be dry for most of the week, but forecasters are predicting a chance of showers Friday afternoon and a 50-50 chance of showers and thunderstorms Friday night.
The official forecast for Wednesday — Independence Day — calls for mostly sunny skies with temperatures reaching in the upper 80s.
With Patricia Kitchen
Tips for surviving the heat:
- Stay out of the heat. If possible, stay inside an air-conditioned place, whether it’s a home, an indoor shopping mall or a cooling center, for example.
- Never leave anyone or any pets in a closed vehicle, even for a few minutes.
- Drink plenty of fluids, but avoid alcohol, caffeine and drinks that contain lots of sugar.
- Be in touch with your health care practitioner: If your doctor limits the amount of water you drink or you are thinking about taking salt tablets, discuss with your physician first.
- Keep a close eye on the elderly, infants, young children and others at higher risk for heat-related illnesses. Make sure they drink plenty of liquids and stay out of the sun.
- Stay cool. Wear loose-fitting and light-colored clothing and take a cool bath or shower to lower your body temperature.
- If you have to be outside, stay in the shade and limit outdoor activity to when it is cooler: early morning or later in the evening.
- Wear a hat, sunglasses and sunscreen outdoors.
- Use fans to help bring down temperatures, even if you have air-conditioning.
- Keep shades and blinds drawn to keep out the sun’s heat.
- Keep pets in a cool place and give them plenty of water.
- If you must exercise outside, try to cut down on the amount, rest often and stay hydrated.
Sources: Nassau County Executive’s Office, Nassau University Medical Center, PSEG Long Island