Records for Islip Area, New York (ISPthr) on 12-17
Record Highs
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1: 62°F (1984)
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2: 60°F (2021)
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3: 60°F (2000)
Record Lows
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1: 13°F (1991)
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2: 15°F (1988)
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3: 15°F (1963)
Lowest Highs
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1: 48°F (2015)
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2: 46°F (1984)
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3: 44°F (1996)
Highest Lows
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1: 25°F (1988)
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2: 28°F (1963)
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3: 29°F (1972)
Highest December temperature:
77°F on 12-07-1998.
Lowest December temperature:
-1°F on 12-31-1963.
Average temperature is 37.3°F
Average high is 43.3°F
Average low is 31.3°F
Temperature data from 1963 to 2022.
Record Precipitation
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1: 1.14" (1970)
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2: 1.07" (2015)
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3: 1.05" (1992)
Precipitation data from 1963 to 2022.