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Islip Information

Islip, New York • Climate data: Islip MacArthur Airport (ISP)
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Sunrise
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Tonight
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Air Quality
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1991-2020 Normals
ISP Climate
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ISP Climate
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It will be a nice but breezy day, with north-northwest winds occasionally gusting near 30 mph. This afternoon sunshine will help temperatures climb to around 75 degrees.
Long Island Today forecast
Tonight will be partly cloudy, clear and cool. Temperatures will fall into the 50s across much of the Island, with some upper 40s possible around the Pine Barrens. It’s definitely going to have that early fall feel by Tuesday morning.
Long Island tonight forecast
Tuesday is looking beautiful with plenty of sunshine and high temperatures in the lower 70s. We’ll stay dry Tuesday night under partly cloudy skies, with overnight lows once again dropping into the 50s.
Long Island tomorrow forecast
Wednesday brings another great day with lots of sunshine and afternoon temperatures reaching the mid-70s.
The quiet stretch of weather continues through the end of the workweek. Thursday will be sunny and a little warmer, with highs climbing into the upper 70s. Friday also looks good with sunshine followed by a few late-day clouds and temperatures in the 70s. Overall, it’s shaping up to be a beautiful stretch of September weather across Long Island.
Long Island 10 day forecast