Hello,
in that case the drive is not overheating and it can operate normally up to 70C so i should not worry about it. Furthermore you need to check where the drive is located in the pc. If its a laptop then in general it will have a higher temperature, if its in a pc you need to see what is next or near to the drive, it may be a fan that blows hot air to the direction or the hdd is next to is etc
