Records for Islip Area, New York (ISPthr) on 09-16
Record Highs
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1: 88°F (1998)
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2: 85°F (2015)
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3: 85°F (1991)
Record Lows
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1: 44°F (1964)
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2: 46°F (2001)
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3: 46°F (1988)
Lowest Highs
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1: 71°F (1998)
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2: 71°F (1991)
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3: 70°F (2005)
Highest Lows
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1: 62°F (1984)
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2: 65°F (2014)
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3: 65°F (2007)
Highest September temperature:
94°F on 09-03-1973.
Lowest September temperature:
38°F on 09-20-1979.
Average temperature is 66.9°F
Average high is 73.1°F
Average low is 60.6°F
Temperature data from 1963 to 2022.
Record Precipitation
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1: 2.26" (1999)
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2: 1.16" (1981)
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3: 0.93" (1967)
Precipitation data from 1963 to 2022.