We started at Long Canyon Trailhead. This is a nice trailhead because it's closer to I-5 than the others, and is the quickest route to the four lakes loop. It was 5 miles to the pass above Deer Lake and pretty much uphill the whole way. After that it was a lot of ups and downs, but over relatively short distances (1-2 miles) and with constantly changing views. Had we stayed an extra day it would have been easy to get over to Sapphire lake through the Stuart fork canyon.
Temps varied wildly. Day one was very autumnal, with high maybe around 60 and lows in the upper 30's. Day two started colder (the pass was very windy and cold) but didn't get that cold at night, maybe 35. Day 3 was amazing, as it really warmed up, and was probably up to 75 on the way out -- hot at the lower elevation when in direct sunlight.
There was a storm scheduled for this week, but I think it probably fizzled out, so this weekend might be a possibility. It will get snowed in any week now....