My wifes 92 Sidekick always runs at the same point as well. Usually if you vehicle is running to cool there will be a milky buildup in the oil. If there is no buildup then I would say this is normal. You could however change the temp of the thermostat if you wanted it to get it to run a bit cooler.
I'm assuming that your gauge is horizontal if it is vertical then I guess its running hot if so repost and I will give you some ideas there.