Weather measurements are local and time specific (hourly basis). As most commuters travel twice a day between home and work, we are able to estimate the effect of adverse weather employing panel data techniques, which is novel in this context. We find that for most commuters the welfare effects of adverse weather conditions are negative but small. However, the commuters’ welfare costs due to rain are rather substantial during rush hours in congested areas (and up to 15 percent of the overall commuting costs).