Weather will likely play an important role when you plan your trip to Ouray, but bear in mind that cheaper options are usually available when the weather isn't as good. The hottest months are usually July and August, with an average temperature of 13°C, while the coldest months are January and December, with an average of -6°C. The snowiest months in Ouray are March, January, December and February, with each month seeing an average of 61 cm of snowfall.