At what temperature does frostbite typically begin to occur?

Frostbite typically begins to occur at temperatures of 25°F (-4°C) and below. At this temperature, the risk of skin and underlying tissues freezing increases significantly, particularly in conditions of wind chill or exposed skin. Factors such as wind can exacerbate this risk, lowering the effective temperature even further and accelerating the onset of frostbite.

While temperatures above this point, such as 32°F (0°C), 30°F (-1°C), or even 28°F (-2°C), can lead to cold-related injuries, they are generally not low enough to cause frostbite in a short exposure time without additional contributing factors like wind. Thus, 25°F (-4°C) is recognized as the critical threshold where frostbite risk becomes a serious concern.