The prevailing continental cold climate has a marked dry season. The parks temperature and rainfall vary greatly from one area to another. From west to east, from Chile to the Rio Limay there is a great variation in the rainfall.

On the other hand, temperatures drop dramatically from the low valleys to the high peaks. These climatic differences, added to the variation of soil, topography and geomorphology produce great changes in the flora and fauna. In winter the average temperature is 2º C. Summer has a maximum temperature of 27ºC, a minimum of 9ºC with an average of 18ºC. Autumn and winter are the rainy seasons.

Autumn: days are cool and nights are cold. Temperatures range between 4 and 13 degrees. The rainy season begins.

Winter: Cold days with abundant snowfall. Temperatures drop to between 0ºC and –10ºC.

Spring: Cool days that gradually get longer and warmer while snow and rainfall diminish. Nights are cold and daylight temperatures vary between 7ºC and 20ºC.