Adding a Weather Tile to a folder allows you to track the current and future weather in locations important to your folder's theme.
To add a tile select "Weather Forecast" from the tool menu.
Once selected a weather tile should appear in your folder. Tap on that tile to set the desired location.
The tile will show the current weather in the location you selected. You can always tap on the tile to get deeper insights as seen below.
You can always change the location tracked or add additional weather tiles to track multiple locations at a single time!