Summers are cool (13 to 18 °C in the north, 12 to 16 °C in the south, with nights generally between 3 and 8 °C), cloudy in the south, and very windy. Winters are dark and cold, but without the extreme temperatures in the south and west (Ushuaia rarely reaches −10 °C, but hovers around 0 °C for several months, and snow can be heavy). In the east and north, winters are much more severe, with cold snaps bringing temperatures down to −20 °C all the way to Rio Grande on the Atlantic coast.