Rockwall experiences a mild winter with temperatures fluctuating between freezing and mild days, averaging around 8°C in January. As spring approaches, temperatures gradually rise, reaching averages of 17°C by April and continuing into May with highs around 21°C. Summer brings warm to hot conditions, with July and August averaging just above 27°C, before a slight drop in September. Autumn months see temperatures return to the mild range, with October averaging around 21°C, before dipping to around 13°C in November. Winters are generally cooler, but still mild, with averages ranging from 5-15°C throughout December and January.