A 31-year-old record melted away on Wednesday as relentless triple-digit heat continued to scorch Phoenix, Arizona, for the 144th day this year. The previous record for the most 100-degree days in a year was set in 1989 with 143 days in total.
When the mercury reached 100 F on Wednesday afternoon, it also tied the record high for the date, which was last reached on Oct. 14, 2015.
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