The most severe occur in the arctic regions, where temperatures fluctuate from 4 °c (about 40 °f) in midsummer to.. Much of alaska and about half of canada are in the tundra.
Tundra is found in the regions just below the ice caps of the arctic, extending across north america, to europe, and siberia in asia.. Discover 20 fascinating facts about the tundra — from permafrost depths and arctic wildlife to indigenous cultures and climate future.