Records for Islip Area, New York (ISPthr) on 04-20
Record Highs
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1: 83°F (1976)
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2: 82°F (2005)
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3: 78°F (2006)
Record Lows
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1: 28°F (1965)
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2: 30°F (1974)
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3: 32°F (2001)
Lowest Highs
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1: 57°F (1987)
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2: 56°F (2019)
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3: 55°F (1976)
Highest Lows
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1: 44°F (1983)
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2: 45°F (1966)
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3: 46°F (1965)
Highest April temperature:
94°F on 04-17-2002.
Lowest April temperature:
16°F on 04-01-1969.
Average temperature is 51°F
Average high is 57.1°F
Average low is 44.8°F
Temperature data from 1963 to 2022.
Record Precipitation
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1: 1.01" (2009)
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2: 0.95" (1970)
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3: 0.62" (1972)
Precipitation data from 1963 to 2022.