Weather and seasons near Phoenix and Chandler
Phoenix heat is the story: 122 days at 100°F or more in 2025.
122Days at 100°F or more, 2025
21Days at 110°F, 30-year average
Days of extreme heat in Phoenix
At 100°F or more, 2025
122
At 100°F or more, yearly avg since 1990
111
At 110°F or more, 2024 record
70 (61 per Newsweek)
At 110°F or more, 30-year avg
21
Heat
- 2025 was Phoenix’s second-hottest year on record, averaging 78.1 degrees. There were 122 days at 100 or higher, against about 111 a year since 1990.
- The 30-year average is about 21 days a year at 110 or higher. 2024 set a record, counted as 70 days by KJZZ and KTAR and 61 by Newsweek.
- Sky Harbor hit 115 on August 22, 2025.
What it means
Summer shapes daily life: shift timing, car interiors and power bills. See the conditions guide for the chart.
Not covered: monsoon storms, winter lows and power bills. We did not find sourced figures.