Known for its beautiful natural surroundings, Salcha experiences a subarctic climate characterized by long, cold winters and relatively short, warm summers. Average temperatures range from -10°F (-23°C) in winter to 70°F (21°C) in summer.
The hydrology of Salcha is influenced by the Tanana River, which flows nearby, as well as various smaller lakes and streams. The area is also home to several wetlands and marshes, contributing to a diverse ecosystem. The water in Salcha is generally clean and abundant, with many residents relying on wells and private water sources.
Outdoor recreation opportunities in Salcha are plentiful. The area is known for its excellent fishing, with salmon, trout, and grayling being popular catches. Boating, canoeing, and kayaking are also enjoyed on the local waterways. Hiking and camping enthusiasts can explore the nearby state parks and national forests, offering opportunities for wildlife viewing and birdwatching. During winter, activities such as snowmobiling, cross-country skiing, and ice fishing are popular among residents and visitors alike. Salcha's natural beauty and recreational opportunities make it a wonderful destination for outdoor enthusiasts.
Salcha receives approximately mm of rain per year, with humidity levels near 72% and air temperatures averaging around °C. Salcha has a plant hardyness factor of , meaning plants and agriculture in this region thrive during a short period during spring and early summer. Most plants will die off during the colder winter months.