In conditions like you describe I tend to hike in a poly running shirt, and pants and bring with me a wind/rain shell, 100 weight fleece, poly or wool thermal bottom, and two merino wool long sleeve shirts, and a fleece toque (hat). I am sure to keep the thermal bottom and the merino's dry to sleep in. I will put the fleece on and off during the day if I am moving or sitting, along with the shell.

YMMV.
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