A new weather app has arrived on iPhone , and it comes from a team that knows this space better than most. The creators behind Dark Sky have launched Acme Weather, a fresh take on forecasting that focuses on one thing most apps ignore: uncertainty. After building Dark Sky, seeing it acquired by Apple, and contributing to Apple Weather, the founders are back with a new independent app designed around everything they learned over the past 15 years. A Weather App That Shows What Might Happen Most weather apps give you one forecast. One temperature. One rain start time. One neat prediction. Acme Weather for iPhone does something different. Instead of presenting a single line as if it were certain, the app displays multiple possible forecast paths. These alternate outcomes show how tightly grouped or widely spread predictions are. When the lines cluster closely together, you can feel confident. When they spread apart, it’s a signal that conditions may shift. That small change transforms how you plan your day.…