Arizona is a U.S. state located in the Southwestern United States. It is best known for its desert landscape, which includes cacti. Arizona is also known for its exceptionally hot summers and mild winters. Less well known is the pine-covered high country in the north-central portion of the state, which contrasts with the lower deserts of the state.Arizona is one of the Four Corners states. It borders New Mexico, Utah, Nevada, California, touches Colorado, and has a 389-mile (626 km) international border with Mexico. Aside from the Grand Canyon, many other National Forests, Parks, Monuments, and Indian reservations are located in the state. Arizona was the 48th state admitted into the U.S. (1912), and the last of the contiguous states admitted.
Due to its large area and variations in elevation, the state has a wide variety of localized climate conditions. In the lower elevations, the climate is primarily desert, with mild winters and hot summers. Typically, from late fall to early spring, the weather is mild, averaging a minimum of 60 degrees Fahrenheit (15°C). November through February are the coldest months with temperatures typically ranging from 40–75°F (4–24°C), although occasional frosts are not uncommon. About midway through February, the temperatures start to rise again with warm days, and cool breezy nights. The summer months of May through August bring a dry heat ranging from 90–120°F (32–48°C), with occasional high temperatures exceeding 125°F (52°C) having been observed in the desert area. The monsoon season occurs from the middle of July through August and brings lightning, thunderstorms, wind, and torrential, if usually brief, downpours.