Day Length: 10h 15m 37s See sunrise, sunset, solar noon, day length, and twilight information for the whole month in the table below.
1 The Chihuahuan Desert â the largest desert in North America, located in the Southwestern United States and Northern Mexico - (140,000 square miles (360,000 km 2)). 2  The Sonoran Desert â a desert located in the Southwestern United States and Northwest Mexico. 3  It is the second largest desert in North America.
The Great Basin Desert is the largest desert in the US which spans  200,000 square miles or 500,000 square km.    However, the largest desert that extends into the Uni â¦ ted States is  the Chihuahuan Desert. The greater portion of that desert is  located in Mexico.