Wind River snowpack

Yes, the Snotel snowpack data is gone for the season, being replaced with year to date precipitation. However, you can extrapolate what conditions are like using the precip data. The Wind’s are at 95% of normal (median). Just to the North here in SW Montana (Gallatin County) we’re at 88%. I was out on a backpack over the weekend, and was in patchy snow above 8,000′ consistently. As to mid August, snow really isn’t much of a thing, and I’d expect generally the same in the Winds. Personally, I wouldn’t be carrying anything extra gear-related for snow.

Before you leave, you could always call a local backpack shop in Lander, and ask about conditions.

Aside, apart from low gaiters (which I always carry anyway), and assuming you carry poles, a cane or staff, the only additional thing you may want are microspikes. That’s it.