I just did Cottonwood Lakes (stayed at lake 3) with a day hike to Langley via OAP this weekend; the night time temps were getting down in the 20's, ice on puddles, and frost on my sleeping bag the first night, when I slept outside my tent. I remarked to myself that I was closer to the limits of my equipment than I preferred. It was T-shirt weather during the day until up on the plateau, then windy and colder. A few folks who showed up at the summit were unprepared for the wind and cold. The experience reinforced/increased my caution about margin of error in cooler Fall weather.
Last edited by Sloper; 09/20/12 05:24 PM.