What will the temperature be at the Grand Canyon?
Spring and Fall weather is extremely unpredictable. Be prepared for sudden changes in the weather during these seasons. Summer temperatures on the South Rim are relatively pleasant (50°s – 80°s F / 10°s – 20°s C). Inner canyon temperatures are often extreme. Daytime highs often exceed 100° F / 38° C. In the winter you can expect cold weather and possibly snow.