Rostraver, Pennsylvania is a small township located in Westmoreland County. It experiences a humid continental climate with four distinct seasons. Summers are warm and humid, with average temperatures ranging from the low 70s to mid-80s Fahrenheit. Winters are cold, and snowfall is common, with temperatures averaging in the mid-30s to low 40s Fahrenheit.

The township is surrounded by various bodies of water, including the Monongahela River to the north and the Youghiogheny River to the south. These rivers provide opportunities for recreational activities such as boating, fishing, and kayaking. Additionally, Rostraver is home to Cedar Creek Park, offering hiking trails, picnic areas, and a playground.

Rostraver's hydrology constituents are influenced by its proximity to the rivers. The Monongahela River serves as a source of drinking water for the township, with adequate treatment facilities in place to ensure water quality.

Overall, Rostraver, Pennsylvania offers a range of outdoor recreational opportunities, from water activities to hiking, attracting nature enthusiasts and individuals looking to enjoy the beauty of the surrounding rivers and parks.