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Phoenix Registers 100th 80° or Above Low Temperature

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Amidst a record-breaking string of 100° days, Phoenix has recently recorded its 100th 80° or above low temperature this year. That easily surpassed the old mark of 91 days, which was set in 2007. The combination of the City’s Urban Heat Island (UHI) Effect and climate change has led to a dramatic explosion of such hot nights. Prior to 1977, Phoenix had never seen 70 or more such nights. The most recent 30-year figure (1995-2024) is 71.