Are you in Central or South Texas? I didn’t think that Texas had much frost except maybe in the Northern most part. So that’s a suprise to me.
SE Texas, 55mi north of Houston. Not as much frost as You, I’m sure, but frosted yards and frosted cars. I had a frosted windshield Wed morning when I went to leave for town. Lots of humidity here and that factors into the picture for frost. Frost is some calculated event figuring humidity, dew point, temp, cloud cover. I noticed it Wed that open areas not covered by tree canopies were a little frosty, but no frost in my yard, except the top sides of my trucks.
Now snow... That would surprise me! In all my years living on the gulf coast of Al, I have only seen snow there, on the ground, maybe 6-7 times. The city shunts down and goes into panic mode if it should snow any visible amount and sticking. You would laugh yourself to death seeing that circus.