You probably were on the trail shortly after I finished. 7/25 - 8/13. Up til MTR for us, we had no rain at all, not even a single cloud. We first noticed distant fluffy (I'm talking wisps) clouds on our way out of Red's, going along the Cascade Canyon toward Duck and Purple lake. And our first afternoon storm the night after MTR.
But then every day after, the rain started about an hour sooner and lasted about a half hour longer. We got pinned down at Guitar Lake from 1PM to 4PM in a very cold downpour, managed to get the tent up dry (a miracle) and took a long nap. Woke up and found all our trail buddies at the "upper" lake, having passed us in our sleep, we had no idea where everyone was!
And about 20 minutes from the Portal, it poured. I mean POURED. Like the worst rain we had the entire trip, and the worst downpour I've gotten stuck in all year, anywhere. The trail became a river! We were finishing so it wasn't a dire situation or anything, but man, it would've been nice to finish dry. Of course once we hit Lone Pine the moisture was sucked right off of us.
Anyway, I felt bad for those on the trail after us... we lucked out with the gorgeous weather most of the trip, and while the afternoon storms weren't that bad, they definitely complicated the day a bit, as we had to pay more attention to keeping things dry and drying things off, and couldn't stop and relax in some spots we would have otherwise.
(Also, my pack at MTR was coming in at 25, which I thought was rather light given the amount of food I had...)