Weather is probably a major factor when you plan your trip to Santa Fe, and keep in mind that cheaper options are usually available when the weather isn’t as good. The hottest months are usually March and April with an average temp of 80°F, while the coldest months are January and December with an average of 77°F. The rainiest months in Santa Fe are October, August, June, and November, with each month seeing an average of 18 inches of rainfall.