Overview: Ciudad NezahualcóyotlCiudad Nezahualcóyotl (Mexico) in general has a tropical climate. The day temperatures range from 25 °C (76 °F) in January to 30 °C (85 °F) in April. The least rainy month in Ciudad Nezahualcóyotl is February with its 1 day of rain, the rainiest month is July, when it rains 21 days. Temperatures during the night go from 4 °C (40 °F) in January to 12 °C (53 °F) in June.