This comprehensive study examines the critical relationship between temperature variations and frequency stability in alternating current power systems, addressing major operational challenges in modern electrical grids. The research investigates mechanisms through which elevated temperatures cause frequency degradation, including thermal expansion effects on conductors, reduced prime mover efficiency, transformer core saturation, and semiconductor thermal drift in power electronics. Through systematic analysis of component-specific thermal responses and system interactions, five primary causative factors are identified: increased electrical load demands, thermal stress on generators and transformers, electronic component property modifications, control system thermal degradation, and external grid disturbances. The study presents a hierarchical framework of optimal solutions with primary interventions addressing root thermal causes and secondary measures providing operational flexibility. Advanced mitigation technologies are evaluated, including Battery Energy Storage Systems, temperature-compensated crystal oscillators, and smart grid technologies, emphasizing their thermal advantages and frequency regulation benefits. Empirical analysis reveals non-linear thermal-frequency correlation patterns, showing exponential frequency degradation at elevated temperatures beyond optimal thresholds. Results establish that Battery Energy Storage Systems provide the most effective solution for temperature-induced frequency instability, offering sub-second response times and minimal thermal sensitivity. The findings contribute to understanding grid stability under thermal stress and provide practical guidance for implementing thermal management strategies in power systems.