iPhone: You have an abundance of options for weather apps on iOS. They're all suited to different styles and preferences. If you're the type who's always wanted some hand drawn art to go with your forecasts, Wild Weather's the app for you.
As a weather app, Wild Weather uses Forecast.io to drum up weather predictions and current forecasts. Beyond that, it also includes a bunch of illustrations for different weather conditions and times of day. It doesn't include any fancy radars or in-depth forecasts, but it has what most of need alongside fun illustrations that make checking the weather a little more interesting.
Wild Weather ($US1.99 ($3)) [iTunes App Store]