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I've had my car a little over a year now, one thing that I didn't even notice or might not have been a problem during last winter was the temperature gauge dropping while driving during colder weather, if I get any kind of speed going the
Temp gauge begins to fall. Presumably from the cold air against the front of the car. But when I get to a stop it begins
To creep back up to a normal Temp. This was not a problem during the summer of course.

Im assuming a bad thermostat but I wanted to see if anybody has any other possibilities as to why this is happening
Before I start throwing parts at it.