Records for Islip Area, New York (ISPthr) on 09-24
Record Highs
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1: 89°F (2017)
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2: 83°F (2009)
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3: 82°F (1984)
Record Lows
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1: 38°F (1963)
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2: 41°F (1998)
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3: 42°F (1974)
Lowest Highs
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1: 69°F (1970)
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2: 67°F (2011)
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3: 67°F (2001)
Highest Lows
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1: 59°F (1997)
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2: 59°F (1974)
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3: 59°F (1963)
Highest September temperature:
94°F on 09-03-1973.
Lowest September temperature:
38°F on 09-20-1979.
Average temperature is 63.7°F
Average high is 70°F
Average low is 57.4°F
Temperature data from 1963 to 2022.
Record Precipitation
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1: 1.23" (2021)
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2: 1.05" (1996)
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3: 0.98" (1977)
Precipitation data from 1963 to 2022.