Records for Islip Area, New York (ISPthr) on 09-25
Record Highs
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1: 87°F (2010)
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2: 85°F (2017)
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3: 82°F (2011)
Record Lows
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1: 38°F (1963)
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2: 39°F (1997)
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3: 40°F (1989)
Lowest Highs
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1: 72°F (1970)
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2: 67°F (2011)
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3: 66°F (2010)
Highest Lows
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1: 58°F (1977)
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2: 62°F (1992)
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3: 62°F (1975)
Highest September temperature:
94°F on 09-03-1973.
Lowest September temperature:
38°F on 09-20-1979.
Average temperature is 63.3°F
Average high is 69.6°F
Average low is 57°F
Temperature data from 1963 to 2022.
Record Precipitation
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1: 1.69" (1975)
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2: 1.29" (2018)
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3: 1.19" (1991)
Precipitation data from 1963 to 2022.