Bob-Dubery
Notice that since the cold front came in your skin feels a bit drier? That's the relative humidity dropping. If you've got a solid wood topped or all solid wood acoustic then it's a good idea to start humidifying.
Symptoms of a too dry acoustic include low action, string buzz, the top appearing concave, protruding frets and, in extreme cases, the top and sides separating, the top or back cracking or the bridge lifting.
Use a humidifier and keep them in their cases when you're not playing.
