Records for Islip Area, New York (ISPthr) on 08-17
Record Highs
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1: 91°F (1997)
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2: 90°F (2009)
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3: 90°F (2002)
Record Lows
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1: 54°F (1979)
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2: 55°F (1981)
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3: 58°F (2000)
Lowest Highs
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1: 75°F (2016)
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2: 75°F (1995)
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3: 75°F (1987)
Highest Lows
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1: 70°F (1979)
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2: 71°F (1992)
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3: 72°F (1975)
Highest August temperature:
100°F on 08-02-1975.
Lowest August temperature:
45°F on 08-30-1986.
Average temperature is 75°F
Average high is 80.6°F
Average low is 69.5°F
Temperature data from 1963 to 2022.
Record Precipitation
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1: 1.27" (1992)
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2: 0.91" (2020)
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3: 0.55" (1994)
Precipitation data from 1963 to 2022.