Round Hill is a charming town located in western Loudoun County, Virginia. It experiences a humid subtropical climate, characterized by hot summers and cool winters. Summers are typically hot and humid with average temperatures ranging from the mid-80s to low 90s Fahrenheit, while winters are relatively cold with temperatures averaging in the mid-30s to mid-40s Fahrenheit. Precipitation is evenly distributed throughout the year, with occasional snowfall during the winter months.

The hydrology constituents in Round Hill are primarily influenced by the Shenandoah River and its tributaries. The town lies within the Chesapeake Bay watershed, which means that its water resources eventually flow into the Bay. The Potomac River also plays a vital role in the region's hydrology.

Outdoor recreation opportunities in Round Hill are plentiful. The town is surrounded by picturesque countryside, making it ideal for activities such as hiking, biking, and horseback riding. There are several scenic trails and parks in the area, including the Appalachian Trail and the Blue Ridge Mountains, which offer stunning views and opportunities for nature exploration. The nearby Shenandoah River provides opportunities for fishing, kayaking, and canoeing. Overall, Round Hill offers a mix of natural beauty and outdoor activities for nature enthusiasts to enjoy.