What is Vegas like in July (i.e. too hot for golf)?

[B-Man]

I am planning a vacation with my girlfriend for the last week of July (to escape the traffic nightmare which will be caused by the DNC in Boston), and we are thinking about going to Vegas for at least part of that week.

My concern is golf, which I would like to do several times while I'm off. I looked at a weather website and saw that the average high temp. in Vegas in July is 107. I know people always talk about it being a "dry heat," but does that really make a big difference? Do a lot of people play golf in Vegas at that time of year? Is it stifling?

Thanks for any info you can provide.