Columbia City is a small city in Columbia County, Oregon, located along the Columbia River. Its climate is generally mild with warm summers and cool winters, with average temperatures ranging from the high 30s to low 80s. The city is situated near the confluence of the Columbia and St. Helens rivers, providing opportunities for boating, fishing, and kayaking. The hydrology constituents in the area include the Columbia River and its tributaries, which are monitored for water quality and aquatic life. Outdoor recreation opportunities also include hiking in nearby parks and forests, such as the Columbia River Gorge National Scenic Area and the Tillamook State Forest, which offer a variety of trails and scenic views.