Planning for the weather is a good way to make your trip to La Calera relaxing and enjoyable, especially when you're splurging. The hottest months are usually September and January with an average temp of 58°F, while the coldest months are January and December with an average of 57°F. The rainiest months in La Calera are November, April, March, and October, with each month seeing an average of 13 inches of rainfall.