Illustrate a weather icon for a snowy day, with a gentle snowflake falling from the top of the icon, surrounded by a soft white background with a subtle gradient to give it a sense of texture, and a few bare tree branches in the background.

Design a weather icon for a rainy day, featuring a droplet of rain falling from the top of the icon, with a dark grey-blue background and a subtle gradient to give it a sense of moisture, and a faint outline of a cityscape in the background.

Create an illustration of a sunny weather icon with a bright yellow sun shining down, surrounded by fluffy white clouds and a blue sky with a few wispy cirrus clouds, with a subtle gradient effect to give it a sense of depth.