We just visited in November and really enjoyed that time of year. It is low season so you won't find so many tourists, which can result in a very real experience. The weather was definitely variable - some days it was hot enough for a t-shirt and jeans, other days I needed a heavy trenchcoat and it rained.
Q. What effect does the barometric pressure have on humans? Can it cause headaches and other discomforts? A. Differences in air pressure because of the weather or changes in altitude can have noticeable effects on the human body, though some people are more sensitive than others.
The decrease in barometric pressure with increasing altitude reduces PAO 2. PAO 2 decreases from 103 mm Hg at sea level to 81 mm Hg in Denver, Colorado (5280 ft [1609 m]) and to 48 mm Hg at the top of Pikes Peak (14,110 ft [4301 m]).s the altitude increases, barometric pressure decreases. This decrease in barometric pressure affects the partial pressure of alveolar oxygen (PAO 2). The percentage of oxygen remains stable at about 21%.