No its not ok, you are looking for at max for it to be around 65-70c, max. look up some guide on how to reapply thermal paste (you did reapply it, right?) remember use a pea sized drop in the middle of the cpu and no reusing thermal paste that was already on there is not ok.
(clean off your old thermal paste with a coffee filter first)
also if your HS is a bit dusty, clean it.