Monterrey, capital of Nuevo León, sits at the edge of the Chihuahuan Desert—North America's largest desert, spanning five Mexican states (including Nuevo León) and parts of Texas and New Mexico. This high-elevation desert (1,000–1,500 m) experiences hot summers, cool winters, and ~250–400 mm annual rainfall. Its distinctive flora includes creosote bush, lechuguilla, sotol, and numerous cacti; fauna includes jackrabbits, coyotes, and roadrunners.
Two other deserts are regionally relevant but do not directly border Monterrey:
A smaller desert within Coahuila state, west of Nuevo León. Hotter and drier (~75°F / 24°C average), with similar Chihuahuan-affinity flora (cacti, yucca) and rattlesnakes. Roughly 200+ km from Monterrey.
Located far to the northwest (Sonora, Arizona, California), famous for saguaro cacti and Gila monsters. Over 1,000 km from Monterrey—no direct proximity.
Bottom line: The Chihuahuan Desert is the desert "near" Monterrey. The city's semi-arid climate and surrounding scrubland represent its eastern transition zone. For desert tourism, the Cañón de la Huasteca and Sierra de Picachos near Monterrey offer accessible Chihuahuan Desert landscapes.