Spring Hill's temperatures are generally mild, with warmer months beginning in March when averages reach around 13°C. April and May bring further increases, averaging 14°C and 18°C respectively, while June marks the start of hot summers with an average high of 24°C. Temperatures remain consistent throughout July and August, peaking at an average high of 26°C before gradually decreasing in September to around 21°C. As autumn sets in, temperatures drop significantly by October, averaging 18°C, before rising slightly again in November. Winter months, from December through February, are relatively cool, with averages ranging from 3°C to 11°C.