Coldest Northern Hemisphere temps of minus 69.6 degress Celsius: Greenland, 1991

Source: Science Daily

Nearly 30 years after recording a temperature of minus 93.2 degrees Fahrenheit (minus 69.6 Celsius) in Greenland, the measurement has been verified by the World Meteorological Organization as the coldest recorded temperature in the Northern Hemisphere.

https://www.sciencedaily.com/releases/2020/09/200926145151.htm