With a population of around 12,900, Rio Grande sits in Oaxaca, Mexico. The city operates in the Central Time Zone.
Recent weather here gives a sense of typical conditions: in 2025, Rio Grande recorded a mean annual temperature of 80°F, ranging from 66°F lows in April to 98°F highs in May, with about 45 inches of precipitation across the year.
View historical weather for Rio Grande · More cities in Oaxaca