Plano's winters are typically mild, with January temperatures averaging around 8 degrees Celsius, occasionally dipping below freezing but rarely staying consistently cold. As the year progresses, spring brings a gradual warming trend, with March and April temperatures steadily increasing towards 17 degrees Celsius on average. Summer months see Plano experience its warmest temperatures, with July and August often reaching highs of up to 39 degrees Celsius, though the mercury can fluctuate significantly within these months. Autumn is characterized by more moderate temperatures, ranging from around 10 to 35 degrees Celsius in September, before gradually cooling down as winter approaches once again. The temperature extremes between seasons are relatively pronounced, with Plano experiencing a noticeable drop in temperatures during November and December after the warmth of summer.