There are four different life zones within this wilderness area: pinyon-juniper, ponderosa pine, mixed conifer, and sub-alpine forest, plus alpine tundra found at the summit of Sierra Blanca just outside the wilderness boundary. Abrupt changes in elevation, escarpments, rock outcroppings, and avalanche chutes make for striking contrast and scenery. The area is also interspersed with meadows and grass-oak savannahs, which are the result of forest fires. The weather is dry and windy in springtime, with temperatures ranging from 32 °F/0 °C to 80 °F/26 °C. July and August are the rainy months with frequent afternoon showers and high temperatures averaging 85 °F/29 °C. Snows in winter do not typically begin until mid-November, and snowfall averages or more. Low temperatures during winter average around , but have reached as low as .