Does Rio ice over in June? Since they are south of the equator, this is the equivalent of December 1st for them but I’ve always thought of Rio as being South America’s Miami.
Ice can be encountered at 38,000 feet during any season and at any latitude.
You do realize that the average air temperature at 35,000 feet is -50 degrees, don’t you?
FL 350. Not exactly balmy up there. (rolls eyes)