With a population of around 177,000, San Luis Rio Colorado sits in Sonora, Mexico. The city operates in the America/Hermosillo time zone.
In 2025, San Luis Rio Colorado recorded an average annual temperature of 76°F — right at the 30-year normal of 76°F. The hottest day reached 118°F in July; the coldest was 39°F in January. Total precipitation was 6 inches (wetter than usual). The wettest month was November.
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