Growing season droughts have major impacts on grassland vegetation and are predicted to become increasingly frequent in semiarid rangelands, but little is known about how droughts and post-drought legacies interact with grazing management to affect forage quality and quantity. In two semiarid prairie rangelands, we assessed the separate and combined effects of experimental rainfall reductions and grazing management strategies on ruminant forage quality and quantity over five years. We measured forage fiber content, organic matter digestibility, relative feed value, forage quantity, and the quantity of digestible forage. During a 2-year experimental rainfall reduction period, rainfall reductions decreased both forage quality and quantity at one site. At the second site, reductions were only apparent in heavily grazed plots. In the first year after experimental rainfall reduction treatments ended, plots that formerly received large rainfall reductions displayed strong legacy effects, with 26-57 % less digestible forage biomass but greater forage quality than controls. Increases in forage quality with former rainfall reduction treatments were strongest in plots that had received heavier grazing during the experimental drought period. Experimental treatments did not induce long-term changes in forage quantity, but rainfall reductions caused forage quality reductions that persisted up to three years after droughts ended. In contrast, grazing treatments did not have long-term effects on forage quality. Our results highlight that forage production capacity in North American grasslands is resilient to both drought stress and grazing disturbance, but these drivers can have additive and long-term effects on forage nutritive value. Heavy grazing during drought may strengthen both negative (during drought) and positive (post-drought) effects of drought on ungulate nutrition.