The high temperature for Phoenix, AZ on Monday was just 108 degrees, which was the coolest daily high temperature for the month! The featured chart presents the July average high temperature for the site and the 2023 value is about five degrees warmer than any previous July on record. This July was also easily the warmest month on record for the location. The chart shows the simple long term average, a recent 30 year average, and a trailing 30 year average. This site is notorious for an increasing temperature due to an ever expanding urban heat island effect with continued development. The 30 year trailing trend line nicely shows that effect.

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