Records for Islip Area, New York (ISPthr) on 12-18
Record Highs
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1: 59°F (1984)
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2: 57°F (2006)
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3: 56°F (2016)
Record Lows
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1: 13°F (1980)
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2: 16°F (1989)
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3: 16°F (1988)
Lowest Highs
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1: 46°F (1996)
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2: 44°F (2012)
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3: 43°F (2006)
Highest Lows
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1: 27°F (1989)
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2: 27°F (1973)
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3: 28°F (1963)
Highest December temperature:
77°F on 12-07-1998.
Lowest December temperature:
-1°F on 12-31-1963.
Average temperature is 37.1°F
Average high is 43.1°F
Average low is 31°F
Temperature data from 1963 to 2022.
Record Precipitation
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1: 1.41" (2012)
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2: 1.12" (1986)
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3: 0.85" (1977)
Precipitation data from 1963 to 2022.