Is There Really Any Atmosphere Charm That Would Warm a Containing Area?

I was just wondering because there's a lot of talking to chapter about it being really cold And they talk about this like little portable fire that Hermione has and I was just thinking Okay, y'all are wizards. So Is there really no like other heat spell like maybe you could create like some kind of steam? I don't know in my mind. It didn't add up to me personally but I do understand why From the perspective of like the writing where it's kind of where it was like we kind of have to feel bad for them. They're not in an abusive situation per se But Hermione and Harry are in a very very high stress Environment and that may be having an effect on