Records for Islip Area, New York (ISPthr) on 12-30
Record Highs
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1: 60°F (1984)
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2: 56°F (2022)
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3: 55°F (2003)
Record Lows
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1: 1°F (1963)
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2: 9°F (1987)
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3: 11°F (1976)
Lowest Highs
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1: 43°F (2021)
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2: 43°F (1992)
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3: 43°F (1990)
Highest Lows
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1: 20°F (1987)
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2: 20°F (1976)
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3: 22°F (2017)
Highest December temperature:
77°F on 12-07-1998.
Lowest December temperature:
-1°F on 12-31-1963.
Average temperature is 34.5°F
Average high is 40.7°F
Average low is 28.3°F
Temperature data from 1963 to 2022.
Record Precipitation
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1: 1.33" (1971)
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2: 0.94" (1975)
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3: 0.74" (2019)
Precipitation data from 1963 to 2022.