Indoor Climate Basics for Growing Cannabis

Indoor Climate Basics 

You may be sitting at home right now thinking about starting your own Indoor cannabis grow and you begin reflecting on those formative years when you learned about what it takes for a plant to grow. On that list includes one of the most necessary factors needed for your Indoor growing success, Climate.   

Climate is very important and can dramatically influence your cannabis plants growth. Dialing in your Indoor grow’s climate is critical for success. 

Join me on a crash course about climate and learn how to properly give your Indoor cannabis plants the right climate it needs at home!

The Lessons

(The First Lesson)

The First lesson one must understand is the Temperature in regard to where you are growing your Indoor cannabis plant. This is a step that you do not want to faulter. The temperature is key and will dramatically impact the performance of your cannabis plants growth and bud development if not monitored properly. 

Allow us to help!

We generally suggest keeping your grow area temperatures between 75-degree and 85-degree Fahrenheit.  

(The Second Lesson)

The Second Lesson one must understand is the importance of Proper Humidity in your Indoor cannabis grow. Each stage of your cannabis plants growth requires different humidity levels in order to reach optimal productivity. 

Allow us to help!  Below we provide you with a general humidity rule of thumb to follow based on the growth stage your Indoor cannabis plant is in. 

The % Breakdown:

Vegetation Stage (The ‘Greening’ Stage) 

– You want your humidity between 40% – 80% rH (Relative Humidity); Optimum being 60% rH 

Initial Flowering Stage (The ‘Flowering’ Stage) 

 You want your humidity between 40% – 80% rH (Relative Humidity) 

 Bud-site Formation Flowering Stage (The ‘I’ve got Buds’ Stage)

 You want your humidity between 45% – 55% rH (Relative Humidity) 

– This will lower the moister level in the buds and prevent moisture induced disease like Powdery Mildew.

(Third Lesson)

The Third Lesson one must understand is the Odor your Indoor cannabis plant will give off.

We recommend either adding a carbon filter to your grow set-up or exhausting the Indoor grow area outside of your home.

(Forth Lesson)

The Forth Lesson one must understand is Air Ventilation in your Indoor cannabis plant grow area.

To optimize and obtain optimal growth, you must have fresh air as an input. Opening a window every day for 30 minutes or making sure your HVAC system is on periodically is a must at a basic level. If you want to be more complex, you can build a ducted fresh air intake/exhaust system. 


1. Increase Humidity: If you find yourself in a predicament where your humidity is too low. We recommend either purchasing a humidifier or soaking a micro-fiber towel and placing it in front of a fan. This will give off the needed moisture you lack.  

2. Decrease Humidity: If you find yourself in a situation where your humidity is too high. We suggest purchasing a dehumidifier which will wick that excess moisture out of the air.

3. Monitor Humidity: We recommend purchasing a relatively low-cost humidity gage in order to monitor the humidity levels in your Indoor grow environment. These can be purchased at your local garden center or online retailer. 

What’s Next?

You have checked the Indoor Climate Box off your list and now you need to focus on what is next. Are you looking for more Beginner basics or are you experiencing problems as your grow? Our Grow 101 education platform we have created is here to help you be a better Cannabis Grower! An array of Cannabis Growing information ranging from Beginner to Expert is at your fingertips and the best thing is that it is all FREE!

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