Roby, Missouri is a small rural community located in Texas County, in the southern part of the state. The climate in Roby is characterized by hot summers and mild winters. Summers are generally hot and humid, with temperatures often reaching the 90s Fahrenheit. Winters are relatively mild, with temperatures typically ranging from the 30s to 50s. Precipitation is fairly evenly distributed throughout the year, with slightly higher rainfall during the spring and summer months.

Hydrology constituents in Roby primarily consist of small creeks and streams that flow through the area. The region is not known for large bodies of water or major rivers. The hydrological features are mainly utilized for recreational activities such as fishing and boating.

Outdoor recreation opportunities in Roby are abundant. The area is surrounded by beautiful forests, providing opportunities for hiking, camping, and wildlife observation. The nearby Mark Twain National Forest offers numerous trails for hiking and horseback riding. For fishing enthusiasts, the local creeks and rivers provide opportunities to catch various species of fish, including bass and trout. Additionally, there are several parks and recreational areas in and around Roby that offer facilities for picnicking, sports, and other outdoor activities.