By now, there are plenty of minimalist weather apps for the iPhone, including WTHR, Blue and Solar just to name a few. But here's another one by Jake Marsh called Conditions. Dead simple, the app shows the current weather and a five day forecast (although this can be hidden so that only the current weather is shown). The app features slightly different designs for day and night; overall the clean design is very pleasant and features Adam Whitcroft's Climacons.

Writing about the app, the developer writes:
Many weather apps clutter their interface and overload their users with tons of details that aren't all that useful.
Conditions only shows you the most important information about what it's like outside right now, wherever you are, anywhere in the world.