Chameleon

Desktop wallpapers say a lot about a computer's owner. They can reflect their current feelings or the general atmosphere around them. If you like changing your wallpaper based on weather or other conditions, then you will definitely be interested in Chameleon. It changes your wallpapers automatically, at different hours or when certain weather conditions change. You can explore other interesting possibilities. If it starts snowing outside, you can have a snowy wallpaper on your desktop, without having to do anything. Also, you can have different backgrounds if your laptop's battery is going low.

Chameleon is free, though you can make a donation if you like the application. It comes as a single executable, so you only need to download and run a file, without going through an installation process. However, you should place the executable in its own folder because the application will create a series of files and folders.

It's quite easy to see how Chameleon works, though you do have to put in some work before you can have an automated wallpaper system. The software lets you pick an image for different conditions, like clear or cloudy weather, for different times of the day, for wind speeds, temperatures, humidity or battery levels. It sounds pretty simple, but Chameleon comes with options for numerous weather conditions, like slightly cloudy, mostly cloudy and so on, all the way to heavy snow and blizzards, so you'd better have enough images on hand.

When you have all your pictures associated with each weather condition or time of the day, you can choose how the application should change your wallpaper. It can switch between images based on weather, temperature or humidity changes, on time of day, wind speed or battery level. You can connect the software to one of several weather forecast stations, over the Internet, so you can be sure that it changes your wallpapers with a good degree of accuracy.

You can bring up the software's user interface at a moment's notice, through its system tray icon, so you can switch to a different picture for a certain condition at any time. Chameleon works quietly in the background, and you don't need to interact with it after you've selected all your pictures, so you will only see your desktop wallpaper being changed automatically, whenever it starts raining or snowing.

With Chameleon working on your system, your screen will reflect everything that's happening around you.