Winters in Rowland Heights are mild, with temperatures rarely dropping below 3°C or rising above 30°C. Spring brings gradual warming, with April and May averaging around 17°C, but occasional heatwaves can push temperatures into the mid-30s. Summer is warm to hot, with July and August being the hottest months, often reaching highs of 35°C, although overnight lows remain relatively cool. Autumn sees a return to mild conditions, with September and October experiencing pleasant temperatures, before cooling off again in November and December.