Temperature and humidity work in tandem, so the higher your temperature is, the higher your humidity needs to be. When the temperature and humidity are kept within the following ranges, plants will generally grow well:
Be aware of the specific needs of the species you are growing. Leafy greens for example do best in cooler temperatures, while fruiting crops do better in more temperate environments.
To optimize growth, please refer to the following article How Does the Environment Impact the Growth of the Plants?