Product review (4 stars): Use temperatures for trends rather than for particular accuracy and you'll like this
I feel like the temperature reading isn't the most accurate, but at least lets me see fluctuations in the room.  When it says 66, it may actually only be 60 in the room, but I know it is warmer than if it says it is 64.  The humidity sensor is a nice addition, especially when feeling ill and pondering if it's worth getting a humidifier or not.