The present study investigated whether specific trait mindfulness facets indirectly influenced state negative affect (NA), positive affect (PA), and physiological hyperarousal (PH) through state rumination and state experiential avoidance. Participants (n = 360, 68% female) rated trait mindfulness facets, then completed an interview task about life experiences intended to elicit state NA, PA, and PH. After the interview task, participants completed measures of state NA, PA, and PH, and state measures of rumination and experiential avoidance. Indirect effect results indicated that the relationships between Nonjudge, Nonreact, and Describe, and each of the state tripartite components indirectly flowed through state rumination. Further, there was a significant indirect effect of Nonjudge and Actaware on each of the three state tripartite components through experiential avoidance. Overall, strengthening the mindfulness skills of Nonjudge, Nonreact, Describe, and Actaware may have positive downstream effects via reducing reliance on maladaptive emotion regulation strategies, such as rumination or experiential avoidance.