Start up RPMs of 2.5 liter 4

I've noticed on first start up the RPMs go as high as 3000 for a couple of seconds and then drop to normal even at 68' degrees,is that normal? because if it is what will aspect when the temperature drops to 20 or even lower.It is a 2.5 liter 4.

This is probably normal. 3k rpms is not that high for that engine.