Not an issue at that temp. As others have said humidity is bad as it will cause mold growth. Heat will warp them. Never store stacked.
Record Storage Temperature
Due to running out of room, I have several crates of lps that I keep in an interior room over my garage that probably goes down to 50-55 degrees farenheit in the winter. I'm not playing them- I don't currently have a turntable set up, but plan to in the future. Will that temperature harm the albums in any way?