i struggled with this due to our microclimates - routinely an effective temp in the 40s at the start or in shady, wet, windy areas, and then 70+ 20 minutes later in the exposed inland sun. I hated carrying stuff, so I ended up going with thin long sleeved tops that have a zipper, full finger gloves, long socks with shorts, and just suffering through the cold part. not applicable below 40 of course but tolerable 40-55 for a few hours.