Weather will likely play an important role when you plan your trip to Santa Josefa, and keep in mind that cheaper options are usually available when the weather isn't as good. The hottest months are usually August and September with an average temp of 80°F, while the coldest months are February and March with an average of 77°F. The rainiest months in Santa Josefa are January, December, November, and February, with each month seeing an average of 13 inches of rainfall.