Records for Islip Area, New York (ISPthr) on 12-09
Record Highs
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1: 66°F (1991)
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2: 63°F (1966)
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3: 60°F (1980)
Record Lows
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1: 8°F (1968)
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2: 15°F (1976)
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3: 16°F (2002)
Lowest Highs
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1: 43°F (2019)
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2: 43°F (2012)
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3: 43°F (1991)
Highest Lows
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1: 25°F (1968)
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2: 27°F (1989)
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3: 30°F (2010)
Highest December temperature:
77°F on 12-07-1998.
Lowest December temperature:
-1°F on 12-31-1963.
Average temperature is 39.2°F
Average high is 45.2°F
Average low is 33.3°F
Temperature data from 1963 to 2022.
Record Precipitation
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1: 2.14" (2014)
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2: 1.93" (1978)
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3: 1.79" (2019)
Precipitation data from 1963 to 2022.