As cooler weather begins to make its presence felt, many residents of the Valley are curious if the days of scorching temperatures are finally coming to a close. This week’s rain has ushered in cooler weather, but is it enough to signal an end to the triple-digit temperatures that Phoenix is known for?
In early September, the National Weather Service reports that Phoenix usually experiences temperatures in the low 100s, which aligns with the forecast for the coming week. Despite this, 2025 has already proven to be one of the hottest summers on record for the city.
To date, Phoenix has experienced 103 days with temperatures soaring into the triple digits, surpassing the norm for this time of year. However, the city typically tallies around 111 such days annually, indicating that more hot days could still be on the horizon.
The earliest recorded instance of Phoenix experiencing its last triple-digit day was on September 2, 1904. However, due to climate change, the warm season has extended further into the fall months. Last year marked the hottest September and October ever, with temperatures exceeding 110 degrees until October 7.
Historically, since the 1990s, the last day of 100-degree temperatures in Phoenix has typically occurred around October 5. The record for the latest triple-digit day was set in 2016, on October 27.
—
Read More Arizona News
