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Cool weather today and then a warm up for the end of the week for Long Island

Dry and sunny weather continues, but we have some changes coming towards the weekend.

Rich Hoffman

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Oct 27, 2026, 12:01 PM

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Islip Information

Islip Information

Islip, New York • Climate data: Islip MacArthur Airport (ISP)
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Mostly sunny skies will be with us throughout the day, with a little bit of a breeze at times. Afternoon temperatures will climb into the middle and upper 50s, generally between 55 and 60 degrees. It's a great day to get outside, enjoy the fall foliage or take care of some yard work, but you'll probably want a light jacket or sweater, especially if you're spending time in the breeze.

Long Island Today forecast
Long Island tonight forecast

Tonight, skies will remain mostly clear, allowing temperatures to drop into the 40s across much of Long Island. Some of our typically colder spots, especially around the Pine Barrens in Suffolk County, could dip into the 30s. That means a chilly start to your Wednesday morning, so make sure the kids have a jacket as they head off to school. By Wednesday afternoon, we'll enjoy a mixture of sunshine and clouds, with temperatures recovering nicely into the upper 50s and lower 60s. Overall, another pleasant fall day with plenty of dry weather for outdoor activities.

As we head toward the end of the workweek, temperatures will be on the rise. Thursday brings sunshine mixed with a few passing clouds and afternoon highs in the 60s. By Friday, we'll see an even bigger warm-up, with temperatures climbing into the upper 60s and lower 70s. That's some very comfortable weather for late October and a great opportunity to finish up outdoor projects, enjoy a walk or take in the beautiful fall colors across Long Island. The nice weather should also be perfect for outdoor sporting events and fall activities as we head into the weekend.

Now, let's talk about Halloween! Right now, Saturday's forecast is looking very nice for all the ghosts, goblins and trick-or-treaters heading out across Long Island. We're expecting a mixture of sunshine and clouds with mild afternoon temperatures in the 60s. As the sun goes down and trick-or-treating gets underway, temperatures should gradually slip into the upper 50s during the early evening. The good news is that we're expecting dry conditions, so the kids should be able to enjoy their Halloween activities without worrying about rain. Whether you're heading to a Halloween party, visiting a pumpkin patch or taking the kids around the neighborhood, the weather is looking great. A light sweatshirt or jacket under those costumes might be a good idea later in the evening.

Looking ahead to Sunday, we'll see more clouds moving into the area, but temperatures will remain mild, with afternoon highs in the 60s. Most of the day should remain dry, making it another nice day for outdoor activities before a chance of showers arrives Sunday night into Monday. And don't forget, Daylight Saving Time ends early Sunday morning, Nov. 1, at 2 a.m., when we turn our clocks back one hour and gain that extra hour of sleep! The trade-off is that we'll lose an hour of daylight in the late afternoon, with sunset around 4:49 p.m. Sunday. The time change is also a great reminder to check your smoke detectors and carbon monoxide detectors. Test the alarms, replace batteries if needed, check expiration dates and make sure all detectors are working properly. It's also a good time to review your family's fire escape plan and check your emergency supplies as we get closer to the winter season. Overall, we're looking at a beautiful stretch of fall weather across Long Island, with a nice warm-up and a fantastic forecast for Halloween!

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Long Island 10 day forecast

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