Smithland, Texas is a small town located in the northeastern part of the state. The climate in Smithland is characterized by hot summers and mild winters. Summers are typically hot and humid with temperatures often reaching the high 90s°F (35°C) and occasionally even above 100°F (38°C). Winters are generally mild with temperatures averaging in the mid-50s°F (10-12°C).

Smithland is situated near the Trinity River, which provides ample hydrological constituents to the area. The river plays a vital role in the town's water supply, as well as offering recreational opportunities such as fishing, boating, and kayaking. The Trinity River is known for its diverse fish population, including bass, catfish, and crappie, attracting anglers of all skill levels.

In addition to the Trinity River, Smithland is surrounded by picturesque rural landscapes, making it an ideal destination for outdoor enthusiasts. Hiking, camping, and bird-watching are popular activities in the area, with several parks and nature reserves nearby. Smithland offers a tranquil setting for individuals seeking to experience the beauty of Texas' natural environment.