I keep my bulk grains (MO, Pilsner, etc in the Homer Buckets and specialty grains are all in Tupperware like containers. I asked the question about grain storage and temps but never got a definitive answer. My house does not have AC and can get into the mid 70's to mid 80's. I keep them in a closet with the door closed. SO far so good. I taste them every other month or so to see if they are turning.