The Chinook can seem to do battle with the Arctic air mass at times. It is not unheard of for people in Lethbridge to complain of -20 Â°C temperatures while those in Cardston, just 77 km (48 mi) down the road, enjoy 10 Â°C temperatures.he term is also used in the Puget Sound area of Washington. Chinook is not pronounced as it is east of the Cascades â shinook â but is in the original coastal pronunciation tshinook. The resulting outflow wind is more or less the opposite of British Columbia / Pacific Northwest Chinook.