Forecast: 40-degree temperature swing on Long Island

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With a nod to winter past that saw any number of dizzying temperature swings, Long Island is forecast to experience a drop of about 40 degrees from Tuesday's high of 88 to a low around sunrise Thursday of about 47, the National Weather Service said.

Tuesday's high of 88, hit shortly before noon at Long Island MacArthur Airport, was well above the record of 82 set in 2006, said the weather service, which has kept Long Island's weather records since 1984. Before that, from 1949 to 1983, records were maintained for Upton by the Brookhaven National Laboratory, and during that time the warmest May 27 was 1965, when it was 88 degrees.

The arrival of a cold front later Tuesday resulted in temperatures dropping Wednesday to the mid 50s, with 57 reported at around 2 p.m. at the Ronkonkoma airport and 56 in Farmingdale and Shirley.

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Look for temperatures rising to the mid-to-upper 60s Thursday and Friday, with a slight chance of showers Friday, said Joe Pollina, weather service meteorologist in Upton.

As for the weekend? The forecast is for 70 degrees both Saturday and Sunday, he said, with mostly sunny skies.

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