That's not too bad. I saw -9.4 that day out here with a -26 wind chill. That was a rough 3 day stretch that pretty much killed the majority of what ever was growing around my property - Rosemary, Palms, roses - everything except the goatheads, of course!
19 seemed a little early to me but I guess it is what it is out there the way it settles.
I'm up in ABQ right now and it's been cold and breezy with a little rain yesterday.