Weather app provides daily weather information based on user’s location it parses weather information from free service OpenWeatherMap.org. It has beautifully designed minimalist user interface. You can easy modify interface according to your taste.
This is a clean swift 3.1 code for iOS and you can open with latest Xcode version (Xcode 8.3 currently). If you are happy with functionality and design of the app then you do not need to modify any code at all. You only need to add your free API key from openweatermap.org then you are all set.