The weather up there truly is as advertised. I hiked up a few years ago, it was in the 60s when we submitted. Like clockwork, a wall of clouds came in like a train and the temp dropped as we started back down. Ended up getting hailed on. I watched a bolt of lightning come out of the clouds at a lower altitude from where I was standing. It was surreal, and scary. The forecast called for just the slightest chance of T-storms, we kind of knew there was a chance we could get into some trouble. But when you drive up 8 hours and only have one chance to make the trek, you kind of feel like you should just go for it. Still glad we did.