Records for Islip Area, New York (ISPthr) on 09-30
Record Highs
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1: 82°F (1986)
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2: 76°F (2011)
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3: 76°F (2010)
Record Lows
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1: 40°F (2000)
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2: 40°F (1992)
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3: 42°F (2006)
Lowest Highs
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1: 70°F (2010)
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2: 67°F (1986)
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3: 62°F (1979)
Highest Lows
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1: 54°F (2001)
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2: 55°F (1992)
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3: 58°F (1991)
Highest September temperature:
94°F on 09-03-1973.
Lowest September temperature:
38°F on 09-20-1979.
Average temperature is 61.4°F
Average high is 67.8°F
Average low is 55.1°F
Temperature data from 1963 to 2022.
Record Precipitation
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1: 2.08" (1979)
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2: 1.05" (2001)
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3: 0.70" (2017)
Precipitation data from 1963 to 2022.