NPS photo by Dallas Larsen
Not all of Arizona is warm dry desert. Weather can vary widely, especially with elevation. At Sunset Crater Volcano (6960'/2121m above sea level), you can expect cool/cold nights year round. Expect windy conditions most of the year.
Spring is usually mild, but heavy snowfall can occur. Summer days are warm with temperatures in the 80s; afternoon thunderstorms are likely July to September. In winter, snow and freezing temperatures alternate with mild weather.
Be prepared for abrupt weather changes in any season. Best advice - dress in layers.
Did You Know?
The San Francisco Peaks, backdrop for Flagstaff and much of northern Arizona, were named in 1629 by Franciscan missionaries in honor of St. Francis of Assisi. This was more than 200 years before what was then a small town in California acquired a similar name.