NW Utah gear for late summer

[lrd]

I'm going to be out at Dugway, Utah off and on through August and September. I've never been there at this time of year so am looking for assistance with my packing list. Some days I'll be out on the range from early morning to late evening. I've looked at several of the threads in this forum -- esp. CommoGeek's gear thread -- but wanted to throw this out for suggestions.

Thanks.