Geographically, problem bears are present in a very small fraction of the Sierra Nevada and there's very good information as to where it is that Yogi is causing trouble. In those areas I'd not consider snacks or flavored drinks in my shelter--everything goes into the canister or bear box--but elsewhere I do so routinely without ever having an issue (covering decades of camping up there).

Now, coastal raccoons are a whole different story!

p.s. On the original topic, like nearly everybody I've had mid-summer experiences with crappy Sierra weather. My comfort zone packing is three days--I trust the forecasts for that length of time. Any longer and I make sure I'm equipped for a surprise half-foot of snow.

Cheers,