This sketch measured the temperature and displays it on the OLED display. By default it displays the temperature in celcius. You can change this to fahrenheit in config mode.
To use this app you need the Wemos D1 R1 & mini and the following shields:
The shields can be stacked as you want.
Watch my video “#106 Wemos ESP8266 Mini Shields: Concept, Test, and Recommendations. Including Wemos Mini Pro” . Temp Sensor starts at 7:55