I get similar temps when playing Heroes Of The Storm. It's high, but technically within spec.
As suggested, Intel XTU is a good place to start, as it not only monitors temps but flat out monitors processor usage and throttling.
Few questions:
Have you tried turning it off and on again? [yes, I'm serious]
Were you doing something drive access intensive [virus scan, large disk cleanup] / Is the indexing service running?
Have you checked to verify the fan is functioning? [If it is, I'm sure you already know with those temps, but it can't hurt to ask]
I'd start by going into task manager and looking for any strange [or just functioning] processes [and verify something's not hitting the drive hard] and start closing things out. Would also go into msconfig/startup and disable anything not absolutely necessary if taskmanager scrub doesn't help (followed by restart)