In a nutshell, when determining your own microclimate for growing vegetables you need to consider: Temperature, light patterns, humidity distribution and air circulation. Knowing this will also help you to determine what plants may do better than others. For example, it’s a fact that tomatoes love light and warm temperatures; contrast that to Kale, which prefers cooler temps and less light. So you wouldn’t want to grow these two veggies together in your system.
We all have windows in our homes and for many of them, each provides their own micro-climate.