Grapevine weather is temperate, with mostly sunny weather year-round. The average high is 75.2° F and the average low is 54.3° F. The winter months tend to be mild, with a few cold days mixed in. Spring brings in a mix of warm and cold weather, depending on if the front comes from the southernly Gulf of Mexico or from up north. Fall weather offers slightly warmer temperatures than you’ll find with our northerly neighbors and beautiful autumn colors.