Records for Islip Area, New York (ISPthr) on 12-26
Record Highs
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1: 64°F (1982)
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2: 57°F (2015)
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3: 55°F (1973)
Record Lows
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1: 5°F (1983)
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2: 5°F (1968)
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3: 6°F (1980)
Lowest Highs
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1: 50°F (1973)
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2: 49°F (2015)
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3: 45°F (1964)
Highest Lows
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1: 16°F (1968)
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2: 17°F (1983)
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3: 23°F (1985)
Highest December temperature:
77°F on 12-07-1998.
Lowest December temperature:
-1°F on 12-31-1963.
Average temperature is 35.3°F
Average high is 41.5°F
Average low is 29.2°F
Temperature data from 1963 to 2022.
Record Precipitation
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1: 1.36" (1975)
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2: 1.32" (1973)
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3: 1.17" (1969)
Precipitation data from 1963 to 2022.