No, there is sometimes snow in Van Horne. Not a lot, though. Had some this Christmas, I believe.
Van Horne was selected because: it is in the middle of nowhere. You can crash a rocket in a 100 mile radius and hit nothing. The New Mexico desert to the NW was selected to blow up atomic bombs for a reason.
In fact, Van Horne pretty much consists of a Holiday Inn and two gas stations. Lots of illegal aliens (not the green kind) and drug runners. Border control stop in Eagle Pass (home of the inventor of the Nacho, BTW).
The closet cities of any size in El Paso in the West and Midland in the East.
That said, it IS on a major freeway (really 2: I-10 and I-20) that go through the town and a railway. Supplying an operation would be easy.
You'd have radar and technology support from White Sands and Ft. Bliss nearby ("nearby" in relative West Texas, nearby.