This paper describes a comprehensive framework for the development of an extended reality (XR) authoring toolkit for general aviation weather training. Conventional weather training methods often rely on static, text-based materials, which might result in limited engagement and failure to provide an immersive experience tailored to the unique learning needs of students. Conversely, XR-enhanced lessons offer promising alternatives to enhance weather-related knowledge and decision-making. However, existing XR toolkits typically require advanced programming skills, posing challenges for non-technologist instructors. To address this gap, a content-centered approach that shifts the focus from the technicalities of developing augmented reality visualizations to enabling non-technologist instructors to readily interact with weather objects and scenario elements is proposed. The development framework, rooted in the user-centered design approach, encompasses understanding the user's context, specifying requirements, and developing a prototype. This study provides a description of the framework, accompanied by a case study specifically tailored to developing an XR authoring toolkit for general aviation weather training. Emphasis is placed on the significance of conducting comprehensive user studies and adhering to evidence-based software design guidance throughout the development process. The proposed framework is expected to contribute to the development of user-friendly 3D authoring environments, empowering instructors to create engaging and interactive aviation weather lessons. By enabling non-technologist instructors to create XR-enhanced lessons without requiring extensive computer skills, the framework aims to broaden access to XR-based training, catering to a wider audience.