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Islip Information

Islip, New York β€’ Climate data: Islip MacArthur Airport (ISP)
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1991-2020 Normals
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ISP Climate
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Partly sunny skies for today. At times it may turn mostly sunny, while at other times clouds will take over. Overall, it’s a nice and slightly warmer day, with afternoon highs close to 70 degrees.
Long Island Today forecast
Tonight is looking quiet and comfortable with partly cloudy skies and dry conditions across Long Island. Overnight temperatures will fall into the 50s, setting us up for another beautiful day on Wednesday.
Long Island tonight forecast
Wednesday will feature a mixture of sun and clouds along with even warmer temperatures. Afternoon highs will reach 70 to 75 degrees. The nice weather continues into Thursday with mostly sunny skies and highs climbing into the mid to upper 70s.
Long Island tomorrow forecast
Friday could be the warmest day of the week. We’ll have plenty of sunshine with temperatures reaching the mid to upper 70s across much of Long Island. Some areas of Nassau County could even climb into the lower 80s. Enjoy the warm and sunny weather because some changes arrive for the weekend.
Saturday turns a little cooler with more clouds in the morning with chance of showers. A little more sunshine in the afternoon. High temperatures will be close to 70 degrees. Sunday looks more unsettled with cloudy skies and periods of showers. It will also be noticeably cooler, with afternoon highs only reaching the mid-60s.
Long Island 10 day forecast

NOR'EASTER RECAP: PEAK GUSTS AND RAIN TOTALS

Beyond the coastal impacts of this past weekend's Nor'easter, the wind knocked down more than 1,200 trees across Long Island and 4 to nearly 7 inches of rain fell across much of the island, too. Thankfully, the storm is behind us, and nicer weather is on the way, but storm cleanup continues for many Long Islanders through the week.

FINAL LONG ISLAND NOR'EASTER RAIN TOTALS:

FINAL LONG ISLAND NOR'EASTER PEAK WIND GUSTS: