Your question is not very specific. Temperature; body, water or outside temperature? Clothed or naked? For how long; a person could easily stay naked outside in (real feel) -10°C for a couple of minutes without serious injury (minor frost bite is probable).
The Russian village Oymyakon (pop. 800) has the lowest recorded temperature for any permanently inhabited location, -71.2°C (disputed). It has an average winter low temperature of -45.5°C, and an average all year low temperature of -22.5°C.
In cases of hypothermia, 13.7°C is the lowest recorded body temperature of a survivor. Reference: edition.cnn.com
The Russian village Oymyakon (pop. 800) has the lowest recorded temperature for any permanently inhabited location, -71.2°C (disputed). It has an average winter low temperature of -45.5°C, and an average all year low temperature of -22.5°C.
In cases of hypothermia, 13.7°C is the lowest recorded body temperature of a survivor. Reference: edition.cnn.com