Once it gets around freezing or below, it may be too cold to hit driver. The balls are significantly harder. This prevents them from compressing or “deforming” enough on impact. The titanium face technically doesn’t become more brittle until you get to around negative 300 F degrees.
BUT, the carbon that supports that face is a different story. Carbon fiber does start to become brittle at around freezing temperatures. As long as you are hitting the face, you should be fine, but anything else could cause some damage. Who knows, even the carbon frame could start to break down if the face is smashed against it with too much force.