Records for Islip Area, New York (ISPthr) on 01-21
Record Highs
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1: 58°F (1974)
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2: 57°F (2006)
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3: 53°F (1979)
Record Lows
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1: -3°F (1984)
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2: -1°F (1985)
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3: 4°F (1994)
Lowest Highs
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1: 42°F (2017)
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2: 38°F (1979)
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3: 38°F (1964)
Highest Lows
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1: 6°F (1985)
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2: 14°F (2019)
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3: 15°F (1984)
Highest January temperature:
69°F on 01-29-2002.
Lowest January temperature:
-8°F on 01-18-1965.
Average temperature is 31.8°F
Average high is 37.9°F
Average low is 25.7°F
Temperature data from 1963 to 2022.
Record Precipitation
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1: 2.92" (1979)
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2: 0.59" (1974)
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3: 0.46" (2014)
Precipitation data from 1963 to 2022.