For some reason (it was our choice) we sat outside in the middle of June in the early evening. But I cannot hold the Southwest temperature against the restaurant. We arrived with a large group and no reservation, and we were easily accommodated on the patio. My friend and I split a avocado/pineapple salad (those are the ingredients, not the name) and a glazed chicken dish. Neither were particularly "Mexican" but it was quite good. Most of the group ordered margaritas, and even the picky margarita drinkers were happy.
To sum up, I would go back!