Average Seasonal Temperature ..

Tundra winters are long, dark, and cold, with mean temperatures below 0°C for six to 10 months of the year. The temperatures are so cold that there is a layer of permanently frozen ground below the surface, called permafrost.

This is a graph showing the Average Annual

Temperature in a Tundra Biome in Russia!

http://tundraremerson.weebly.com/average-annual-temperature.html