Dallas, Texas has a humid subtropical climate with hot summers and mild winters. The city receives an average of 38 inches of rainfall per year, with most occurring in the spring and fall. The Trinity River runs through the city and serves as a major source of water for the area. The river and its tributaries also provide opportunities for outdoor recreation such as kayaking, fishing, and biking along the Trinity Trail. The city also has numerous parks and green spaces, including the Dallas Arboretum and Botanical Garden and Klyde Warren Park, which offer a variety of recreational activities.