storing soil in a 25 gal rubbermaid in grow room?

i have a 25 gallon rubbermaid container full of soil, i have no top on it and i need to store my soil in their for about 40-60 days. Can anyone please enlighten me on what would be the best way to store this? would it be cool if i just leave it in the courner of my grow room? i have it their now and seems to be cool for now but an y help would be greatly appriciated.

cover it with something.
even saran wrap

i do it with mine. it might dry out alot so ya may want ta put a piece of plastic or something over it. sometime my soil is too moist. ill let it sit open till its dry enough them lid it till it needs ta be used.