South Pole
In midsummer, as the sun reaches its maximum elevation of about 23.5 degrees, high temperatures at the South Pole in January average at . As the six-month "day" wears on and the sun gets lower, temperatures drop as well: they reach around sunset (late March) and sunrise (late September). In midwinter, the average temperature remains steady at around . The highest temperature ever recorded at the Amundsen–Scott South Pole Station was on Christmas Day, 2011, and the lowest was on June 23, 1982 (for comparison, the lowest temperature directly recorded anywhere on earth was at Vostok Station on July 21, 1983, though was measured indirectly by satellite in East Antarctica between Dome A and Dome F in August 2010). Mean annual temperature at the South Pole is -49.3 °C (-56.7 °F).
Polar ecology
The temperatures are similar between the Arctic and Antarctic. The temperatures in the Arctic are different depending on the location. Temperatures in the Arctic have a higher range than in the Antarctic. Temperatures can range as much as . Along the coast in the Arctic temperatures average in December, January and February. The ice melts along the coast during the summer months which are around June, July and August and the temperature may rise a few degrees above freezing causing there to be some vegetation. During these same months in the northern regions there will be 24 hours of daylight. Arctic regions also receive a lot of snowfall. The Arctic Basin has snow 320 days out of the year while the Arctic Seas have snow cover 260 days a year. The thickness of the snow averages . In Greenland, temperatures have an average temperature of in the winter and in the summer the temperatures reach . Iceland on the other hand is in a subarctic region meaning it is near the temperate zone. Because of this the temperatures are above the freezing point throughout much of the year. In Russia temperatures are extremely cold. In Verkhoyansk, Siberia it has reached the coldest temp of in the Northern Hemisphere. The temperatures in the summer in Siberia can get to .