Randolph Air Force Base (Randolph AFB) is located in Universal City, Texas, approximately 16 miles northeast of downtown San Antonio. The climate in Randolph AFB is characterized as a humid subtropical climate with hot summers and mild winters. Summers are typically hot and humid, with average temperatures ranging from the mid-90s°F (mid-30s°C) and occasional thunderstorms. Winters are mild, with average temperatures in the mid-60s°F (around 20°C).

As for hydrology constituents, Randolph AFB is situated near the J-17 Edwards Aquifer Recharge Zone. This aquifer is a vital water resource for the area, supplying drinking water to San Antonio and surrounding communities. The base follows strict regulations to protect the aquifer and minimize any potential contamination.

Outdoor recreation opportunities abound in the vicinity of Randolph AFB. Nearby, you can find numerous parks, such as Universal City Park and Live Oak Park, offering amenities like walking trails, playgrounds, and picnic areas. The San Antonio River Walk, just a short drive away, provides a scenic location for walking, dining, and enjoying various events. Additionally, the area boasts several golf courses, lakes for fishing and boating, and nature reserves, offering opportunities for outdoor enthusiasts to explore and engage in recreational activities.