Records for Islip Area, New York (ISPthr) on 12-29
Record Highs
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1: 65°F (1984)
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2: 55°F (2018)
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3: 55°F (2013)
Record Lows
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1: 11°F (2017)
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2: 11°F (1963)
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3: 12°F (1977)
Lowest Highs
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1: 50°F (1984)
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2: 46°F (1996)
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3: 45°F (2005)
Highest Lows
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1: 22°F (2017)
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2: 28°F (1977)
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3: 29°F (1993)
Highest December temperature:
77°F on 12-07-1998.
Lowest December temperature:
-1°F on 12-31-1963.
Average temperature is 34.7°F
Average high is 40.9°F
Average low is 28.5°F
Temperature data from 1963 to 2022.
Record Precipitation
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1: 1.56" (2013)
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2: 1.44" (1997)
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3: 0.98" (1991)
Precipitation data from 1963 to 2022.