With a population of around 1,400, 31 de Octubre sits in Sonora, Mexico. The city operates in the America/Hermosillo time zone.
In 2025, 31 de Octubre recorded an average annual temperature of 78°F. The hottest temperatures reached 110°F in June; the coolest were 44°F in January. Total precipitation for the year was 13 inches, with the wettest month being September.
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