Records for Islip Area, New York (ISPthr) on 12-16
Record Highs
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1: 64°F (1971)
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2: 59°F (2021)
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3: 56°F (2011)
Record Lows
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1: 10°F (1988)
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2: 10°F (1968)
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3: 16°F (1964)
Lowest Highs
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1: 52°F (2021)
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2: 49°F (1971)
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3: 45°F (1982)
Highest Lows
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1: 25°F (1988)
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2: 25°F (1963)
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3: 27°F (1968)
Highest December temperature:
77°F on 12-07-1998.
Lowest December temperature:
-1°F on 12-31-1963.
Average temperature is 37.5°F
Average high is 43.5°F
Average low is 31.5°F
Temperature data from 1963 to 2022.
Record Precipitation
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1: 1.09" (1974)
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2: 0.87" (1982)
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3: 0.85" (2007)
Precipitation data from 1963 to 2022.