Records for Islip Area, New York (ISPthr) on 12-11
Record Highs
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1: 65°F (1971)
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2: 60°F (2021)
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3: 59°F (2015)
Record Lows
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1: 5°F (1968)
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2: 10°F (1977)
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3: 11°F (1988)
Lowest Highs
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1: 43°F (1969)
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2: 42°F (2021)
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3: 42°F (2015)
Highest Lows
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1: 20°F (1977)
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2: 25°F (1995)
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3: 30°F (2009)
Highest December temperature:
77°F on 12-07-1998.
Lowest December temperature:
-1°F on 12-31-1963.
Average temperature is 38.7°F
Average high is 44.7°F
Average low is 32.8°F
Temperature data from 1963 to 2022.
Record Precipitation
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1: 2.65" (1992)
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2: 2.21" (2008)
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3: 0.94" (1967)
Precipitation data from 1963 to 2022.