Records for Islip Area, New York (ISPthr) on 09-01
Record Highs
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1: 93°F (2010)
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2: 90°F (1973)
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3: 89°F (1969)
Record Lows
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1: 49°F (1991)
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2: 50°F (1986)
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3: 50°F (1968)
Lowest Highs
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1: 75°F (1980)
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2: 74°F (2013)
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3: 73°F (2014)
Highest Lows
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1: 64°F (2002)
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2: 66°F (2003)
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3: 68°F (1991)
Highest September temperature:
94°F on 09-03-1973.
Lowest September temperature:
38°F on 09-20-1979.
Average temperature is 72.1°F
Average high is 78.2°F
Average low is 66°F
Temperature data from 1963 to 2022.
Record Precipitation
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1: 1.53" (2021)
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2: 1.33" (1981)
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3: 0.59" (1987)
Precipitation data from 1963 to 2022.