  We obtain an analog of the prime number theorem for a class of branched
covering maps on the $2$-sphere $S^2$ called expanding Thurston maps, which are
topological models of some non-uniformly expanding rational maps without any
smoothness or holomorphicity assumption. More precisely, we show that the
number of primitive periodic orbits, ordered by a weight on each point induced
by a non-constant (eventually) positive real-valued H\"{o}lder continuous
function on $S^2$ satisfying some additional regularity conditions, is
asymptotically the same as the well-known logarithmic integral, with an
exponential error term. In particular, our results apply to
postcritically-finite rational maps for which the Julia set is the whole
Riemann sphere. Moreover, a stronger result is obtained for Latt\`{e}s maps.
