Records for Islip Area, New York (ISPthr) on 09-10
Record Highs
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1: 90°F (1983)
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2: 89°F (1996)
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3: 89°F (1989)
Record Lows
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1: 39°F (1975)
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2: 46°F (1973)
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3: 48°F (1978)
Lowest Highs
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1: 73°F (2016)
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2: 71°F (2020)
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3: 71°F (1996)
Highest Lows
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1: 66°F (2018)
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2: 66°F (1978)
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3: 68°F (1975)
Highest September temperature:
94°F on 09-03-1973.
Lowest September temperature:
38°F on 09-20-1979.
Average temperature is 69.1°F
Average high is 75.4°F
Average low is 62.9°F
Temperature data from 1963 to 2022.
Record Precipitation
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1: 2.75" (2020)
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2: 2.30" (2015)
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3: 1.72" (1999)
Precipitation data from 1963 to 2022.