Did a november trip with pretty good weather several years ago. The days are short and get noticeably shorter as you go. There were days when we did not see direct sun for hours at a time, but perhaps a ribbon a few hundred yards long where the side canyon allowed it to reach the river. If you did not stop, you would get about one minute of it's glorious energy. Had to time baths accordingly. Couldn't always sleep on boats or near shore due to dew, and it was tough to dry stuff out with limited sun. Once you are cold and wet, it isn't always easy to get warm again. The primarily good weather was enjoyable, but it was kinda cold overall. Take the winter gear, but you will still be able to sleep under the stars. Looking back, it wasn't too bad, but it was occasionally trying. I'd go in November again, but with a little more warm weather gear.