Records for Islip Area, New York (ISPthr) on 12-23
Record Highs
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1: 64°F (2015)
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2: 60°F (1981)
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3: 59°F (2006)
Record Lows
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1: 8°F (1989)
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2: 10°F (2022)
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3: 11°F (1963)
Lowest Highs
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1: 52°F (1990)
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2: 46°F (2006)
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3: 45°F (2015)
Highest Lows
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1: 20°F (1989)
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2: 28°F (2009)
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3: 28°F (2000)
Highest December temperature:
77°F on 12-07-1998.
Lowest December temperature:
-1°F on 12-31-1963.
Average temperature is 36°F
Average high is 42.1°F
Average low is 29.8°F
Temperature data from 1963 to 2022.
Record Precipitation
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1: 1.63" (2015)
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2: 1.04" (1997)
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3: 0.97" (2006)
Precipitation data from 1963 to 2022.