The Asian clam Corbicula fluminea is one of the most widespread aquatic invasive species in the continental United States. As a species that reproduces via androgenesis in its invasive range, creating genetically identical male clones, it is well suited to expand into new habitats. We examined the spread of Corbicula into new areas, using data from the United States Geological Survey Nonindigenous Aquatic Species database. We quantified the spread of Corbicula using data at the Hydrologic Unit Code 6 level, with Corbicula either being present or absent and modeled the overall rate of spread using a locally weighted regression. The spread rate of Corbicula increased through the 1980s, similar to the population growth under logistic population growth, and began to decline as it filled all of the habitats that were climatically suitable. However, the decline was much slower than predicted, with steady increases in the range of Corbicula through the 2000s. We argue that this “long tail” of the spread of Corbicula is a function of climate change. While invasive species are expected to undergo localized adaptations via natural selection to match local conditions including temperature extremes, as a clonal species, Corbicula should lack the genetic diversity to have natural selection act on any traits controlling temperature tolerance. Therefore, we argue that Corbicula represents an ideal study species to examine the impact of climate change on the range of an invasive species in isolation. These results mirror species distribution modeling predictions with warming winters, in particular, leading to an increased range of Corbicula in the northern United States.