What is Climate of Madrid?

Madrid and its metropolitan area has a Mediterranean climate which transitions to a cold semi-arid climate. According to the Troll-Paffen climate classification, Madrid has warm-temperate subtropical climate and according to the Siegmund/Frankenberg climate classification, Madrid has a subtropical climate. However, the most widespread climate classification is that Madrid presents a climate of transition between the Mediterranean climate and the cold semi-arid climate , with hot summers and relatively cool winters with somewhat frequent frosts on average] and occasional snowfalls, with 3-4 snowy days on average.