Busto Arsizio experiences a continental climate with distinct seasons. Winters are cold and variable, with temperatures often dropping below freezing in January and February, but occasionally rising above average. As spring arrives, temperatures gradually warm up, reaching averages of around 8°C by April. Summer is mild and relatively stable, with July and August temperatures averaging around 19°C. Autumn brings a return to cooler temperatures, with November and December experiencing chilly conditions similar to those of winter.