Okay, the deal is that the sun rises in the northeast, peaks at 8.5 degrees south of vertical at noon, and sets in the southwest, on the summer solstice in Tucson. At the equinoxes, it rises and sets due east and west, and is to the south all day. At the winter solstice it rises in the southeast and sets in the southwest, and peaks at just over 55 degrees south of vertical at solar noon.

Some useful sites:

Solar Path for Tucson

Passive Solar Heating and Cooling

Evaluating Your Site For Solar Energy

Our building site is at 32.155 degrees latitude, -109.43 degrees longitude

And on a completely different topic, this has got to be the coolest visualization of the construction of a software system that I've ever seen.