Brilliant, Alabama is a small town with a humid subtropical climate. Summers are hot and humid, with highs reaching into the 90s, while winters are mild with occasional snowfall. The town is located near the upper reaches of the Black Warrior River, which is a major source of drinking water for the area. Hydrology constituents in the river include sediment, dissolved minerals, and nutrients. Outdoor recreation opportunities in Brilliant include fishing, boating, and hiking in nearby Bankhead National Forest. The forest also offers opportunities for hunting, camping, and wildlife viewing.