Urban stormwater has been increasing significantly in recent years due to drastic changes in climate and the environment as a result of the increased presence of paved surfaces. In highly urbanized areas, where impermeable surfaces dominate, surface runoff can lead to frequent flooding and bring serious challenges for stormwater management. Green roofs have emerged as an effective strategy to mitigate stormwater runoff while offering additional ecological benefits. This thesis examines the hydrological performance of green roofs under historical and future climate scenarios, over a 65-year projection, in four different cases under identical meteorological conditions for the city of Turin, Italy. Climate data, including historical observations (1981-2006) and future projections based on the IPCC RCP 4.5 scenario (2006-2070), were obtained from the Euro-Mediterranean Center on Climate Change (CMCC) as part of the Highlander project, which employs convection-permitting regional climate models (CP-RCMs) at a spatial resolution of approximately 2.2 km.