  The nuclear modification factors of J/$\psi$ and $\psi$(2S) mesons are
measured in PbPb collisions at a centre-of-mass energy per nucleon pair of
$\sqrt{s_{\mathrm{NN}}} =$ 5.02 TeV. The analysis is based on PbPb and pp data
samples collected by CMS at the LHC in 2015, corresponding to integrated
luminosities of 464 $\mu$b$^{-1}$ and 28 pb$^{-1}$, respectively. The
measurements are performed in the dimuon rapidity range of $|y| <$ 2.4 as a
function of centrality, rapidity, and transverse momentum (p$_\mathrm{T}$) from
p$_\mathrm{T}=$ 3 GeV/$c$ in the most forward region and up to 50 GeV/$c$. Both
prompt and nonprompt (coming from b hadron decays) mesons are observed to be
increasingly suppressed with centrality, with a magnitude similar to the one
observed at $\sqrt{s_{\mathrm{NN}}}=$ 2.76 TeV for the two J/$\psi$ meson
components. No dependence on rapidity is observed for either prompt or
nonprompt J/$\psi$ mesons. An indication of a lower prompt J/$\psi$ meson
suppression at p$_\mathrm{T} >$ 25 GeV/$c$ is seen with respect to that
observed at intermediate p$_\mathrm{T}$. The prompt $\psi$(2S) meson yield is
found to be more suppressed than that of the prompt J/$\psi$ mesons in the
entire p$_\mathrm{T}$ range.
