As technology shrinks to smaller dimensions, nanostructured metals have an appeal as a means for innovation due to their remarkable properties of high strength and good ductility. However, the plasticity of nanostructured metals exhibits a stochastic behavior that is not seen at the bulk scale. Large strain bursts cause the production of a serrated stress-strain curve. Face-centered cubic metals have been studied extensively, but body-centered cubic metals still require more research to better understand their mechanical behavior. BCC metals have shown an advantage over FCC metals with generally higher flow stresses. Recent BCC micropillar experiments have also displayed a strong size effect at small pillar diameters. The temperature effect on BCC micropillar plasticity has not been broadly explored. We performed dislocation dynamics simulation to investigate the temperature effect in BCC micropillars considering the mobility ratio of edge dislocations to screw dislocations.