The processor temp should be above the ambient temperature of the room/environment it is inside of. That is, unless you went and installed a liquid cooling system onto the processor... 😱 😀
Any utility that lists the processor temp as less then the room temp is giving a false reading and should be ignored. I have seen PowerBook G3 processors show up as being ~120°F before. I have also had older G4 systems come up as just a few degrees over room temp.
I did locate one utility that doesn't have a temperature reading, yet at least. The author of the application/utility promises to have the temp feature functional in a future release. Or as the read me put it... "CPU/Bus Clock, no temp support yet, OS X/OS 9 native."
Check out Overclocker's Helper via Versiontracker.com.