Temperature and humidity play crucial roles in growing cannabis. Of course, imbalances in temperature and humidity will have adverse effects on your plants. We often pair temperature and humidity together because they are often linked – high temperatures can “hold” more water vapor than low temperatures. So, what should the temperature and humidity be throughout the various stages of growth and how can you regulate them? Let’s take a look.

Ideal Temperature and Humidity Levels

Here is a quick breakdown of a generalized needs list for your plants but be aware that each individual plant will likely have specific desires and each strain is a little bit different so watch your plants carefully for signs of stress and adjust your temperature and humidity accordingly.

Stage of Growth Temperature (Fahrenheit): Day Temperature (Fahrenheit): Night Humidity Level (Relative Humidity)
Seedlings/new sprouts 77 – 79° 69 – 72° 80-90%
Clones 74 – 78° 69 – 72° 75 – 85%
Vegetative 71 – 82° 64 – 72° 60 – 70%
Early Flowering 68 – 79° 68 – 79° 50 – 60%
Late Flowering 68 – 76° 63 – 68° 40 – 50%
Drying 65 – 74° n/a 50%

 

How do you control temperature and humidity in a grow tent?

How to increase temperature:

How to decrease temperature:

How to increase humidity:

How to decrease humidity:

Controlling humidity and temperature isn’t too tough! With just a few extra steps you can stabilize your environment and make a perfect home for your babies. Good luck!

If you have any questions, please don’t hesitate to reach out to us!

And be sure to check out our other blog posts for useful tips on becoming a great grower!

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