I'm not sure that temperature has a 'fail' threshold in the same way as reallocated sectors.
Looking at my WD drives (black and greens), current temperature is 150 - current C2 attribute value, suggesting a plausible 41°C at the time the data was read. Problem then is that the worst value suggests the drive once got to 146°C...
So either a) the drive has been over-cooked, b) the drive is reporting incorrect data, or c) I don't know how to interpret C2 for this drive.
Any reason you're worried about it?