Summerville, Oregon is a small community located in Union County, situated in the northeastern part of the state. The town experiences a diverse climate with warm summers and cold, snowy winters. Summers are generally mild, with average temperatures ranging from the mid-70s to low 80s Fahrenheit, while winters can be quite cold, with temperatures often dropping below freezing.

Hydrologically, Summerville is surrounded by natural beauty, with several rivers and streams flowing through the area. The Grande Ronde River is the most prominent hydrological feature, offering opportunities for fishing, kayaking, and boating. The river is known for its abundant trout and steelhead populations.

When it comes to outdoor recreation, Summerville provides ample opportunities. The nearby Blue Mountains offer hiking and camping options, allowing visitors to explore the region's stunning landscapes, including dense forests and picturesque meadows. Hunting is also popular in the area, with opportunities for deer, elk, and upland bird hunting available in the surrounding forests.

Overall, Summerville, Oregon is a charming town that offers a diverse climate, scenic hydrological features, and a range of outdoor activities for nature enthusiasts to enjoy.