How long do you have to stay in cold temperatures to receive frostbite or even a virus / cold?

Frostbie: You do not catch a cold by being exposed to cold temperatures. A virus causes it, not the cold. Developing a frostbite is irrelative to the degree of the temperature but the colder it is, the shorter the time to develop it. Some individuals are more prone to developing it even in not too cold temperatures, especially if protective clothing and gloves are not worn.