just back from a 7 day backpacking trip to bridger wilderness, just south of that area. Mosquitoes where brutal, all the time, everywhere...with the exception of windy places. We were only at @9800 all week and the high 70's & low 80's felt really really hot! Lows averages about 32 at night, so be prepared in September! No rain or afternoon hail storms, and that was a first!