Jefferson-Manor is a small community located in Fairfax County, Virginia. The region experiences a humid subtropical climate, characterized by hot and humid summers and mild winters. Summers are typically hot, with temperatures averaging around 85°F (29°C), while winter temperatures average around 40°F (4°C). Precipitation is evenly distributed throughout the year, with an average annual rainfall of 43 inches (109 cm).

The hydrology of Jefferson-Manor is influenced by a network of streams and rivers, including the Potomac River and its tributaries. These water bodies provide opportunities for outdoor activities such as fishing, boating, and kayaking. The Potomac River is known for its diverse fish species, including bass, catfish, and trout.

In addition to water-based recreation opportunities, the area also offers various outdoor activities such as hiking and biking. Nearby parks and trails, such as Huntley Meadows Park and the Mount Vernon Trail, provide opportunities to explore the region's natural beauty and wildlife. Overall, Jefferson-Manor's climate and hydrology provide a conducive environment for outdoor enthusiasts to engage in a range of recreational activities throughout the year.