Records for Islip Area, New York (ISPthr) on 09-23
Record Highs
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1: 88°F (1980)
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2: 88°F (1970)
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3: 86°F (2005)
Record Lows
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1: 40°F (1976)
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2: 42°F (1963)
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3: 43°F (1972)
Lowest Highs
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1: 71°F (1970)
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2: 70°F (2019)
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3: 68°F (2021)
Highest Lows
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1: 55°F (1963)
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2: 57°F (1974)
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3: 60°F (1995)
Highest September temperature:
94°F on 09-03-1973.
Lowest September temperature:
38°F on 09-20-1979.
Average temperature is 64.1°F
Average high is 70.4°F
Average low is 57.8°F
Temperature data from 1963 to 2022.
Record Precipitation
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1: 1.69" (1975)
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2: 1.24" (2011)
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3: 0.73" (1994)
Precipitation data from 1963 to 2022.