Records for Islip Area, New York (ISPthr) on 05-21
Record Highs
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1: 90°F (2022)
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2: 90°F (1996)
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3: 86°F (1992)
Record Lows
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1: 39°F (2020)
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2: 39°F (2002)
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3: 40°F (1994)
Lowest Highs
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1: 69°F (1996)
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2: 65°F (1975)
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3: 61°F (1985)
Highest Lows
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1: 49°F (1990)
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2: 54°F (2000)
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3: 57°F (2003)
Highest May temperature:
98°F on 05-20-1996.
Lowest May temperature:
32°F on 05-01-2008.
Average temperature is 59.2°F
Average high is 65.4°F
Average low is 53°F
Temperature data from 1963 to 2022.
Record Precipitation
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1: 0.90" (1985)
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2: 0.67" (1980)
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3: 0.60" (2003)
Precipitation data from 1963 to 2022.