Climate Italy's climate is predominantly Mediterranean: Alpine in the far north; hot and dry in the south. Winter in Milan is relatively mild but foggy, with temperatures ranging from zero to 8 degrees Celsius. Summer can be very humid with brief thunderstorms; temperatures range from 14 to 29 degrees. From March through April temperatures range from 6 to 18 degrees. From October through November they range from 6 to 17 degrees.