Corrected entry: Throughout the entire movie you never see their breath even though it is cold.
Ronnie Bischof
8th Nov 2002
Cliffhanger (1993)
Correction: If the air is very dry you don't see the breath. Depending on the saturation of the air you can see breath or not, it is even possible to see the breath in rather warm temperatures if the air is saturated enough.
Once the temperature drops below a certain degree, around 42°F, you'll always see your breath, no matter how dry it is. Although, as you stated, if combined relative humidity is 100%, you'll be able to see your breath at any temperature.
Correction: Yes you do see breath. See the scene with the night vision.
manthabeat ★