McGregor, Texas is a small city located in McLennan County. It experiences a humid subtropical climate, characterized by hot summers and mild winters. Summers are typically hot and humid, with average temperatures ranging from the mid-80s to mid-90s Fahrenheit. Winters are mild, with temperatures ranging from the mid-40s to mid-60s Fahrenheit. McGregor receives moderate rainfall throughout the year, with slightly higher precipitation levels during the spring and fall seasons.

Hydrology constituents in McGregor include the Bosque River, which flows through the city and offers opportunities for fishing and kayaking. The river is home to various fish species, such as bass, catfish, and sunfish. Additionally, there are several small lakes and reservoirs near McGregor, including Lake Waco, which provide further opportunities for boating, fishing, and water sports.

Outdoor recreation enthusiasts visiting McGregor can also explore the nearby Mother Neff State Park, offering hiking trails, camping sites, and picnic areas amidst scenic landscapes. The park is known for its unique rock formations and diverse plant and animal life. Overall, McGregor provides a pleasant climate and access to various water bodies and outdoor recreational opportunities for residents and visitors alike.