It is always nice to know current and future weather. There are tons of computer or android apps that allow constantly monitor weather data of any locations you selected. But not everyone likes these widgets being on screen. So why not building a physical weather widget that would display pretty same information on graphical LCD.
deba168 has published his instructable where he builds a weather widget using ESP8266 serial WiFI transceiver that can also be programmed in arduino manner. He used 128×64 OLED display to show localized weather data along with time and date. He pulls weather data from wunderground by using free account. And finally he used 3D printed enclosure that blends in on any surface.