Records for Islip Area, New York (ISPthr) on 09-20
Record Highs
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1: 87°F (1983)
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2: 82°F (2000)
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3: 82°F (1997)
Record Lows
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1: 38°F (1979)
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2: 44°F (1993)
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3: 46°F (2020)
Lowest Highs
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1: 70°F (2005)
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2: 70°F (1989)
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3: 68°F (2017)
Highest Lows
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1: 58°F (1979)
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2: 61°F (1987)
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3: 61°F (1972)
Highest September temperature:
94°F on 09-03-1973.
Lowest September temperature:
38°F on 09-20-1979.
Average temperature is 65.3°F
Average high is 71.6°F
Average low is 59°F
Temperature data from 1963 to 2022.
Record Precipitation
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1: 0.96" (1988)
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2: 0.68" (1977)
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3: 0.20" (1991)
Precipitation data from 1963 to 2022.