Records for Islip Area, New York (ISPthr) on 04-18
Record Highs
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1: 89°F (2002)
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2: 85°F (1976)
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3: 85°F (1964)
Record Lows
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1: 31°F (1980)
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2: 33°F (2022)
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3: 33°F (1990)
Lowest Highs
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1: 62°F (2002)
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2: 56°F (1976)
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3: 53°F (1973)
Highest Lows
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1: 45°F (2020)
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2: 46°F (1983)
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3: 47°F (2000)
Highest April temperature:
94°F on 04-17-2002.
Lowest April temperature:
16°F on 04-01-1969.
Average temperature is 50.4°F
Average high is 56.5°F
Average low is 44.2°F
Temperature data from 1963 to 2022.
Record Precipitation
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1: 0.92" (1969)
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2: 0.73" (2022)
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3: 0.41" (1997)
Precipitation data from 1963 to 2022.