Riverside, Washington is a charming small town located in Okanogan County, in the north-central part of the state. The climate in Riverside is classified as semi-arid, with warm summers and cold winters. The town experiences relatively low precipitation throughout the year, with most of it occurring during the winter months. Summers are generally sunny and warm, with temperatures averaging in the high 70s to low 80s Fahrenheit.

Hydrologically, Riverside is situated near the beautiful Okanogan River. The river provides a scenic backdrop to the town and offers various recreational opportunities such as fishing, boating, and kayaking. The river is known for its diverse fish species, including trout, salmon, and steelhead.

Outdoor enthusiasts will find plenty of opportunities to explore nature in and around Riverside. The area is surrounded by picturesque mountains, making it ideal for hiking, camping, and wildlife viewing. There are also several nearby lakes and reservoirs where visitors can enjoy water activities like swimming, paddleboarding, and fishing.

Overall, Riverside, Washington offers a pleasant climate, access to the Okanogan River, and numerous outdoor recreation opportunities, making it an attractive destination for nature lovers and adventure seekers.