Extreme weather events, particularly freezing spells, present significant risks to the mental well-being of vulnerable populations, especially older adults. Despite their heightened susceptibility to such conditions, research examining the impact of cold spells on this demographic remains limited. This study investigates the effects of cold spells on the mental well-being of older adults in Jinan, China, while also assessing the preparedness of community services to meet the challenges posed by these events. We conducted in-depth interviews with 21 older adults, selected based on specific criteria, and employed thematic analysis to interpret the qualitative data. Our findings indicate that cold spells significantly impair the mental well-being of older adults, with participants reporting depression, mood disturbances, disrupted sleep patterns, and heightened social isolation. Furthermore, there is a marked deficiency in effective coping strategies for managing the adverse effects of cold weather. This study highlights the urgent need for action plans, including the development of targeted mental health services and educational campaigns addressing the health impacts of extreme weather on older adults, providing valuable insights for policymakers and healthcare providers in creating interventions for this vulnerable population.