Climate in Arizona

Arizona has mild winters and hot summers, with thunderstorms during the summer months between July and September. Extremes in temperature occur between day and night throughout the state, particularly in the desert areas where daytime temperatures of over 125°F (52°C) have been recorded.

During winter, temperatures average about 70°F (21°C), dropping to below freezing in the desert valleys at night. Summer temperatures vary from 80°F (27°C) during the day to 40°F (4°C) at night. Snow falls in the mountains, but not in the desert areas, and the mild temperatures in the southern desert attract many tourists in winter.