Winters in Azusa are mild, with temperatures rarely dipping below freezing and averaging around 14°C in January. Spring brings gradual warming, with April and May temperatures reaching averages of 17°C. Summers are hot, with July and August temperatures frequently topping 40°C and averaging highs of 26°C. Autumn sees a return to milder conditions, with October and November temperatures cooling back down to averages around 16-18°C. In winter, temperatures can drop as low as -6°C in December.