Indications of CPU heatin..

Ok so there is Artifacts for cPUs and crashes for memory, but is there any signs that a CPU could be overheating? My HSF is hot,but not nearly as hot as my touching one of my western digitals, I have to take my finger off the hard drive in 2 seconds or it feels like my finger will be burned. Reason Im asking, is that for some reason, SpeedFan nor MBM nor Everest reads my CPU temp at all.