Millstone, Kentucky is a small town nestled in the eastern part of the state. The climate in Millstone is characterized as humid subtropical, with hot and humid summers and mild winters. Summers often see temperatures reaching the high 80s to low 90s Fahrenheit, while winters are relatively mild, with average temperatures in the mid-30s to mid-40s.

Millstone is located near the headwaters of the Kentucky River, making water a significant aspect of the area's hydrology. The river serves as an important source of drinking water and provides opportunities for recreational activities, such as fishing, boating, and kayaking. The surrounding landscape is also dotted with streams and small lakes, offering additional water-based outdoor recreation options.

In terms of outdoor recreation, Millstone and its surrounding areas boast numerous opportunities for nature enthusiasts. The region is home to several state parks and national forests, providing ample opportunities for hiking, camping, and wildlife spotting. The picturesque mountains and lush forests also make Millstone an ideal destination for birdwatching and photography. Additionally, the town hosts various festivals and events throughout the year, celebrating the local culture, music, and outdoor activities.