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This unseasonably hot May weather in Phoenix area has a strong climate change link

Getty Images

The National Weather Service has issued an extreme heat warning for the Phoenix area, in effect through Tuesday evening.

The average high temperature this time of year is 93 degrees. But this heat wave is pushing temperatures well above that — Phoenix reached 106 on Sunday and temperatures are expected to reach 107 or higher on Monday and Tuesday.

Temperatures that high are more typical for late June or July.

The research organization Climate Central ranks this May weather event at the highest end of its Climate Shift Index scale, meaning human-caused carbon pollution is playing a large role in the unseasonably hot conditions.

Climate Central

Phoenix has already had 13 days in the triple digits this spring, starting with Phoenix’s earliest 100-degree day ever, on March 18. Typically, Phoenix would have had only three triple-digit days by this time of year.

National Weather Service
Latest on Arizona heat

Katherine Davis-Young is a senior field correspondent reporting on a variety of issues, including public health and climate change.