Is it because my nose is often blocked when I sleep because it's dry?

I'm someone with rhinitis who always gets a runny nose first when I catch a cold. Right now, I don't have a cold, but my nose is often stuffy when I sleep at night. I'm not sure if it's because my room is dry, but would a humidifier or something help? When my nose is stuffy, I have to breathe through my mouth, which is uncomfortable and makes it hard to sleep.