I just can't believe that humidity is making up that much of a difference. Right now the device is reading 55.03°F. There is no possible way it's 55° in my room, the rest of the house is much cooler and the AC (in the living room) is set to turn on at 75°. I unplugged and replugged the Arduino from USB and it's now reading 53.87°F. I also removed the sensor from the breadboard and put in another one (I have two of the same kind), then unplugged and replugged the Arduino and it started at 65° and dropped down (quickly at first, then slower) to around 56°. It is not that cold in here, it never gets that cold in here, or anywhere else in the house for that matter, I hate cold.