Originally Posted by
wphamilton
Same temperature as yesterday, similar clothes, but today I was chilled. Even my hands. I put out slightly less effort but not that much - it felt about 5° colder than the NWS showed. Can there be micro-pockets of cold air, along a creek perhaps, that are colder than the surrounding area?
YES. Definitely. Colder air pools down at the bottom of a creek channel, canyon, or similar, while the warmer air rises out. That's why you always camp up the canyon. It can be 10 or 15F colder at the bottom.