Biological invasions are one of the most pressing threats to ecosystem stability and biodiversity in freshwater systems. Virile crayfish (Faxonius virilis) are an invader of increasing concern across Montana, USA where expanding distributions and ecosystem engineering behaviors (sediment sorting/burrowing) have raised questions about their ecological impacts. Crayfish burrows have the potential to buffer against climate stresses for other freshwater species by providing refuge in low flow conditions and facilitating biogeochemical cycling in the hyporheic zone, but can also augment channel erosion. These effects on sediment movement may intensify under global change if behaviors are altered or rates of activity are increased at higher water temperatures. To investigate how warming waters may impact F. virilis’ burrowing behavior we ran a randomized fully-blocked laboratory experiment in insulated mesocosms at 15°C, 23°C, and 30°C (n = 27 per temperature, 81 total). Each contained either colored sands (D50 = 1 mm; mimicking a stream bank) or gravels (D50 = 7.5 mm; representing channel streambed surfaces) and one crayfish. Individuals were acclimated at their assigned water temperature for 24 hours, prior to exposure to the experimental substrates. Over just 24-48 hours, we found a strong relationship between body size and the mass of sediment an individual moved for both sands and gravels, but no clear effect of water temperature. Larger individuals selected larger rocks to excavate under, with many creating multiple burrows regardless of warm temperatures that exceed natural maximum summer temperatures by 1.35 times. Our findings demonstrate that F. virilis’ sediment sorting behavior is driven by body size, and resistant to short periods of exposure to warming waters. This resistance to short-term stress could have implications for the future role of invasive crayfish in freshwater systems. As waters warm, if crayfish activity and burrowing behavior remains constant, they have the potential to act as either a strong stabilizing or destabilizing force on an ecosystem, regarding sediment movement. Future research could consider how this relationship shifts over longer periods.