Project of another type of meteorological station. This is based on the fact that the temperature is already being measured for you by someone else, and you are only picking up the cherries and displaying the result from the online source on the display. The source is http://openweathermap.org, which provides free data. The microcontroller used is ESP8266 and the display is a classic small OLED.
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Source codes. Look in the article which might be interesting to you.
For fans of Node.js, a similar solution is also available.