The climate in Farmington is typical of the mid-Atlantic region, with hot summers and mild winters. The area's hydrology constituents include the Murderkill River, which flows through the town and is popular for fishing and boating. Outdoor recreation opportunities in Farmington include hiking and biking on the nearby trails of Killens Pond State Park, as well as camping and swimming at the park's freshwater pond. Visitors can also explore the historic architecture of the town, such as the Farmington Schoolhouse and the Old Presbyterian Church. Overall, Farmington offers a peaceful setting for outdoor enthusiasts to enjoy a variety of activities.
Farmington receives approximately 1166mm of rain per year, with humidity levels near 77% and air temperatures averaging around 13°C. Farmington has a plant hardyness factor of , meaning plants and agriculture in this region thrive during a short period during spring and early summer. Most plants will die off during the colder winter months.