Records for Islip Area, New York (ISPthr) on 09-29
Record Highs
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1: 81°F (2015)
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2: 80°F (2010)
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3: 79°F (2019)
Record Lows
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1: 39°F (1976)
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2: 41°F (2000)
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3: 41°F (1965)
Lowest Highs
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1: 68°F (1979)
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2: 68°F (1967)
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3: 66°F (2020)
Highest Lows
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1: 58°F (2000)
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2: 59°F (1964)
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3: 61°F (1970)
Highest September temperature:
94°F on 09-03-1973.
Lowest September temperature:
38°F on 09-20-1979.
Average temperature is 61.8°F
Average high is 68.1°F
Average low is 55.5°F
Temperature data from 1963 to 2022.
Record Precipitation
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1: 1.44" (1964)
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2: 1.38" (1963)
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3: 0.98" (2004)
Precipitation data from 1963 to 2022.