The MCP9808 has a typical accuracy of ±0.25°C over the sensor’s -40°C to +125°C range and precision of +0.0625°C. Three address pins allow up to eight sensors to be connected to a single I²C bus. For more information see: https://learn.adafruit.com/adafruit-mcp9808-precision-i2c-temperature-sensor-guide
I’ve wrapped Adafruit’s Arduino library:
https://xod.io/libs/wayland/mcp9808-thermometer/
