Vienna, Missouri, is a small town located in Maries County. It experiences a humid continental climate, characterized by hot summers and cold winters. Average temperatures range from the mid-80s°F (30°C) in summer to the mid-30s°F (1-2°C) in winter. Precipitation is fairly evenly distributed throughout the year, with an annual average of 45 inches (114 cm).

Vienna is situated near the Gasconade River, which plays a vital role in the town's hydrology. The river serves as a water source for the community and supports various aquatic ecosystems. It offers opportunities for fishing, canoeing, and kayaking, attracting outdoor enthusiasts.

In addition to the Gasconade River, Vienna is surrounded by beautiful natural landscapes, including state parks and conservation areas. Visitors can explore the nearby Maries River Conservation Area, which offers hiking trails, wildlife viewing, and hunting. The Little Prairie Conservation Area and the Boeuf Creek Nature Area are also popular destinations for outdoor activities.

Overall, Vienna, Missouri, provides a pleasant climate, abundant water resources, and diverse outdoor recreation opportunities, making it an appealing destination for nature lovers and outdoor enthusiasts.