The climate associated with the boreal (taiga) forest zone of Eurasia, where it extends to 65°–70° N in the west and 50° N in the east, and with N. America, where it extends from the fringe of the tundra southwards to 55° N in the east. Winters are long and cold, with temperatures below 6 °C for 6–9 months, and summers are short, with temperatures averaging more than 10 °C. Precipitation, as snow in winter, typically amounts to 380–635 mm per annum.