Went on an excellent fall backpacking trip to Observation Peak, forming a loop via Trapper Creek trail. No snow yet, even at 4200 ft, but the night was below freezing (mid 20s). We camped out on the summit, where there's a few nice ledges (but no water at all). Trail is in excellent shape, some decent fall color, and the creeks are running low (so no challenging crossings).
Trails for everyone, forever