Can severe heat and humidity damage plant?

I just went on vacation and left my plants all alone I'm excited to come back and see the progress BUT i'm away for a week and after two days my friend txts me and tells me that there has been a heat advisory in st.louis and I was wandering if I should get one of my friends to bring the plants inside for a lil while because of the severe weather, what do u think?

what temps are you talkin.
im from socal. not familiar with your weather

Shittt like 103 with unbeleivable humidity lol

the humidity would be the bigger problem.
you could face mold problems.if it only last a few days then they will be fine.
some great growers in hawaii and its always humid.
some strains are more humidity resistant.
hope this helps a bit,

Yea I was thinking bout that but thank you for reasurring my fear lol jkjk thanks, uhm what would the mold look like/where would it most likely be on the plant and how can I clean up my baby

It will look like white fuzz patches.
Can start anywhere.
If it happens post and we all will help figure it out.