Everyone is running shuttles as far as I know. Weather wise depends if a storm is blowing through or not, otherwise it should be sunny and in 70s-80s? We ran it late Sept 2012, it was great weather, except due to forest fires the smoke was everywhere. I still slept on my boat every night.
Water wise it was 2,000 cfs at White Bird and plenty of action on the river. I'd say lower water was a bit harder than family friendly low teens. I have a video of that time frame on my youtube channel, since I've posted it so much on the buzz, if you are interested jump on my Youtube channel (so I won't spam buzzers with my footage

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Also, it's low season, so you can camp in any site you come to, which is great since you don't have to make specific mileage.
Enjoy the trip.