This paper incorporates climate variables, including rainfall conditions and patterns, into an impact assessment of the Value Chain Development Project in the Maputo and Limpopo Corridors (PROSUL) in Mozambique. It focuses on activities targeting improved pasture management, supplemental feed sources and livestock value chain development. Results show weather and climate conditions significantly impact households’ adoption of project activities and livestock productivity outcomes. Project beneficiaries in drought-prone areas are more likely to provide supplemental feed in the dry season, though livestock birth rates are still lower in those areas.