Phoenix, Arizona – January 2026 finished significantly warmer and drier than normal across the Phoenix metro, with conditions that may continue to affect drivers along major corridors like Interstate 10, Interstate 17, and Loop 202, according to the National Weather Service.
According to the National Weather Service Phoenix, average high temperatures in Phoenix reached 72.3 degrees, running 4.7 degrees above normal, while average lows climbed to 50 degrees, about 4 degrees warmer than typical January readings. The monthly mean temperature of 61.1 degrees ranked January 2026 as the 4th hottest January on record for Phoenix.
Rainfall was also scarce. Phoenix recorded just 0.18 inches of precipitation, nearly 0.7 inches below normal, reinforcing already dry winter conditions across Maricopa County. Drier air and warmer pavement temperatures can impact early-morning and overnight driving conditions, especially on long stretches of I-10 through the West Valley and elevated sections of I-17 north of downtown.
The climate summary also highlighted extreme warmth across the broader region. Yuma and El Centro, California, both finished January among their top five hottest Januarys on record, with El Centro tying for its 5th hottest January. All three climate sites reported below-normal precipitation, with only trace rainfall measured in some locations.
Weather officials say prolonged warmth during winter months can contribute to increased wildfire risk later in the season, faster snowmelt in higher terrain, and extended drought concerns heading into spring.
Residents are encouraged to stay informed on changing conditions, especially if commuting during early morning hours or traveling long distances on desert highways.
This article was produced by a journalist and may include AI-assisted input. All content is reviewed for accuracy and fairness.
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