Collado-Villalba experiences a moderate climate with significant temperature fluctuations throughout the year. Winters are chilly, with January and February averaging around freezing temperatures, while March brings a gradual warming trend. As spring arrives in April and May, temperatures rise steadily, often reaching highs above 30°C by late May. Summers are warm to hot, with July and August being the hottest months, while September brings a slight cooling down. Autumn is mild, with temperatures dropping back down to around freezing by November and December.