  We theoretically explore the possibility to detect weak localization of light
in a hot atomic vapor, where one usually expects the fast thermal motion of the
atoms to destroy any interference in multiple scattering. To this end, we
compute the coherent backscattering peak, assuming high temperature and taking
into account the quantum level structure of the atomic scatterers. It is found
that the decoherence due to thermal motion can be partially counterbalanced by
working at large laser detuning and using small atomic cells with an elongated
geometry. Under these conditions, our estimates suggest that weak localization
in a hot vapor should be within reach of experimental detection.
