Here's a weather app concept animation. This could be realised in real life. The main idea is a very simple — single screen-app.
Dribbble - Loading Screen by Ryan Roehl
[GIF] Weather by Mark Geyer for Salesforce
Weather App inspiration via Muzli. “What the heck is the story with weather apps?” is published by Muzli in Muzli -Design Inspiration
Dribbble - Inbox - Zero Inbox Animation by John Schlemmer
Visual Walkthrough: Examples of Tiny Animated Icon Gifs - Designmodo
Winter weather Icons animated [GIF] by Ilya Tsuprun (Haifa, Israel)
Interesting animation changes by date Weather / Flat design