Inside the arctic tundra there are only two seasons: Winter and Summer. In the Summer, the sun stays up for a full 24 hours but, it is not effective in the sense that it only raises the biome's temperature by about 3 (dg)C to 12(dg)C. In the Winter, there are multiple weeks where the sun doesn't rise. This causes extremely cold temperature, this is also why the average temperature is -28(dg)C. Average precipitation in the Arctic Tundra ranges from 6 to 10 inches a year and the majority, falls as snow. The result is permafrost
Within the Arctic Tundra, the climate prevents the soil from getting nutrients. When rain falls, most of the time turns into snow on the way down. When the rain does get all the way down, it just freezes and makes a coat of ice above the soil so it doesnt actually get much nutrients. This is called, permafrost. The plants that survive in the Arctic Tundra, grow the roots close to the surface to soak in as much nutrients as possible. The soil in the Arctic Tundra is poor and lacks in nutrients.