Monterrey is a municipality in Mexico. It is located in the state of Nuevo León, in the central part of the country, 700 km north of the capital Mexico City. The following communities are located in Monterrey: MonterreyI is the following in Monterrey: Cerro del Topo Chico. Loma Larga. Puerto El Aire The climate in the area is humid and subtropical. The average temperature in the area is 19°C. The hottest month is August, when the average temperature is 26°C, and the coldest is January, with 12°C. The average annual rainfall is 860 millimeters. The wettest month is September, with an average of 289 mm of precipitation, and the driest is January, with 21 mm of precipitation.