I've never grown them myself, but there are sure apricot trees here, and have been for decades.
The tree i harvested the fruit from is on a high terrace above the river, and doesn't receive any supplemental irrigation or special protection. The fruits were smaller and a bit drier than normal, but had a delightful tart flavor when dehydrated.
I'm sure your trees on the front range will do great, especially if you protect them from the wind!
Also, I recommend watering them deeply and infrequently to encourage a deep
root system, possibly with a molasses-based
compost tea to encourage mychorizae.
In his book,
Sepp Holzer discusses planting nursery rejects in the fall, by placing them in the ground with his
hugel bed, and not watering them until after the first winter to encourage
deep roots.
Let us know how it goes Kelly!