In December, the weather in Santiago de Querétaro is typically warm. Average daily high temperature in December is about 23 degrees above zero. On average, Santiago de Querétaro has 17 sunny, 10 partly cloudy, 3 cloudy, and 1 rainy day in December. The rains are usually light. December as well as January, February, and November is considered the most comfortable time to visit Santiago de Querétaro.