Records for Islip Area, New York (ISPthr) on 09-15
Record Highs
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1: 84°F (2008)
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2: 83°F (2015)
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3: 82°F (2005)
Record Lows
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1: 40°F (1975)
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2: 44°F (1986)
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3: 47°F (1996)
Lowest Highs
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1: 73°F (2005)
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2: 72°F (2021)
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3: 70°F (1998)
Highest Lows
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1: 63°F (1984)
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2: 63°F (1975)
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3: 63°F (1963)
Highest September temperature:
94°F on 09-03-1973.
Lowest September temperature:
38°F on 09-20-1979.
Average temperature is 67.2°F
Average high is 73.5°F
Average low is 61°F
Temperature data from 1963 to 2022.
Record Precipitation
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1: 3.12" (1966)
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2: 2.65" (2006)
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3: 2.59" (2000)
Precipitation data from 1963 to 2022.