Records for Islip Area, New York (ISPthr) on 05-17
Record Highs
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1: 85°F (1974)
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2: 84°F (2015)
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3: 80°F (1986)
Record Lows
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1: 40°F (1984)
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2: 40°F (1983)
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3: 40°F (1967)
Lowest Highs
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1: 62°F (2015)
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2: 62°F (1965)
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3: 61°F (1991)
Highest Lows
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1: 56°F (1978)
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2: 57°F (1994)
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3: 58°F (1966)
Highest May temperature:
98°F on 05-20-1996.
Lowest May temperature:
32°F on 05-01-2008.
Average temperature is 58°F
Average high is 64.2°F
Average low is 51.7°F
Temperature data from 1963 to 2022.
Record Precipitation
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1: 1.94" (1990)
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2: 1.47" (1970)
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3: 1.29" (2011)
Precipitation data from 1963 to 2022.