Records for Islip Area, New York (ISPthr) on 09-18
Record Highs
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1: 85°F (1965)
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2: 84°F (2021)
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3: 82°F (2018)
Record Lows
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1: 43°F (1990)
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2: 43°F (1986)
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3: 44°F (2013)
Lowest Highs
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1: 69°F (2016)
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2: 69°F (1991)
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3: 68°F (2021)
Highest Lows
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1: 61°F (1996)
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2: 64°F (1993)
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3: 65°F (1986)
Highest September temperature:
94°F on 09-03-1973.
Lowest September temperature:
38°F on 09-20-1979.
Average temperature is 66.1°F
Average high is 72.3°F
Average low is 59.8°F
Temperature data from 1963 to 2022.
Record Precipitation
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1: 0.85" (2004)
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2: 0.67" (2012)
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3: 0.67" (1980)
Precipitation data from 1963 to 2022.