October in Mesa, Arizona, typically marks a transition from the intense summer heat to milder autumn conditions. Average high temperatures gradually decrease from the low 90s (F) at the beginning of the month to the mid-80s by the end. Overnight lows follow a similar trend, shifting from the high 70s to the mid-60s. This period also sees a significant drop in humidity, creating crisp, dry air.
This comfortable climate makes October a popular time to visit or enjoy outdoor activities in the area. The pleasant temperatures provide ideal conditions for hiking, biking, and exploring the Sonoran Desert landscape. Historically, this transitional month also signaled the start of the harvest season for local agriculture, continuing a legacy rooted in the area’s history.