On a resume you don't need to list it. However, when you're applying for a particular position, verify how they want it, especially if you have to an application (online or otherwise). I've been temp-to-hire before myself, and even when I applied for promotions within the company I had to distinguish the time as a contract and as a regular employee. Any discrepancy would have disqualified me for the promotions (I was promoted twice at that company).
If you have to include it in a resume, make the 'temp-to-hire' reference at the end of your description for that position, not the start. You want the first thing anyone reads to be the good stuff, not the background stuff.
Keep that in mind, too, for any applications you may need to distinguish between your real start dates for multiple positions at the same company and not just the actual one. That was a big annoyance for me, because I was often doing the new job long before I was formally in that position.