Union, Maine is a small town located in the northeastern United States. Known for its picturesque landscapes and charming rural character, Union experiences a humid continental climate, with warm summers and cold winters. The average temperature in summer ranges from 70°F to 80°F, while winter temperatures vary between 20°F and 30°F. The area receives an average annual precipitation of approximately 44 inches, which is well distributed throughout the year.

Situated near several ponds and lakes, Union boasts an abundant hydrology system. The town is home to Seven Tree Pond, Crawford Pond, and Sennebec Pond, which offer ample opportunities for water-based activities such as fishing, swimming, and boating. The surrounding forests and hills provide a scenic backdrop for hiking, camping, and wildlife observation. Union is also known for its numerous trails, including the Vose Library Nature Trail and the George's Highland Path, which offer a chance to explore the region's natural beauty.

With its pleasant climate and diverse hydrology, Union, Maine provides residents and visitors with a wealth of outdoor recreation opportunities, making it an ideal destination for nature enthusiasts and adventure seekers.