From central Alaska, across Canada from Yukon to Newfoundland. From Scandinavia, across Russia to eastern Siberia. Like humid continental climates, absent from Southern Hemisphere. Often very low water equivalent, but can persist for many months of the year.
Summers are mild, usually brief.
Winters can be exceedingly cold. Alaska, central Canada, Siberia experience the coldest temperatures in the Northern Hemisphere. Cold and dry year round, with a brief thaw in the summer. Little precipitation seasonality. Long, subfreezing winter.