Records for Islip Area, New York (ISPthr) on 09-26
Record Highs
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1: 85°F (1970)
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2: 81°F (2017)
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3: 80°F (1968)
Record Lows
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1: 40°F (1987)
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2: 40°F (1963)
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3: 43°F (1965)
Lowest Highs
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1: 70°F (2018)
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2: 69°F (1970)
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3: 68°F (2005)
Highest Lows
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1: 55°F (2000)
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2: 61°F (1978)
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3: 63°F (2009)
Highest September temperature:
94°F on 09-03-1973.
Lowest September temperature:
38°F on 09-20-1979.
Average temperature is 62.9°F
Average high is 69.2°F
Average low is 56.6°F
Temperature data from 1963 to 2022.
Record Precipitation
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1: 2.39" (2008)
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2: 1.52" (1989)
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3: 1.36" (1993)
Precipitation data from 1963 to 2022.