Vine Maple (A.Circinatum) in Central Texas

[Maiden69]

How big are those leaves?

Almost 3" the biggest ones.

My question is how cold does it get down there in the winter?
You can make accommodations for the heat of summer, shading and watering, ect, but if your winter temps are too high for the tree to achieve dormancy it will not survive. It may take a few years, but eventually it will be exhausted.

This is the one thing I am doubtful about, plenty of people with JM and tridents in my area that need a certain amount of "chill hours" or dormancy and they thrive. Heck, @Clicio is growing JM's in Brazil. Most of my deciduous lose their leaves around January 1st and don't push new foliage until mid-March. I won't hold my breath, but I am not expecting them to not survive or even thrive here... conifers on the other hand is a completely different story.

 

[RKatzin]

Comparatively, I start losing leaves in October and don't see them popping again until April/May. I'm a little longer than most of this area because I'm up in the mountains a little over 3000' so I lose leaves earlier and they come in later.
Lots of Vine maples here in the woods and on my bench. They are the fall color around these parts. Absolutely gorgeous display! Especially those that get sun like along the roads and the edges of clearings. Definitely one of my favorite native trees. I certainly wish you the best of growing!

 

[Maiden69]

A little sunburn on the tips, but doing great otherwise.

 

[Maiden69]

I checked on them yesterday and I can report that they don't mind the temperature too much, but they do dislike the Texas sun with a passion. The one that is further out from under the bench leaves are toasted... while the other two look the same, but with a little crispy edge on the leaves. I pushed it back further under the bench. I think they will probably do great under 50 or 70% shade cloth after 12pm during summer, but should be fine with 30% or maybe without any for spring and fall. I will be testing that next year once I finish the area for the sun sensible trees in my growing area.