 Here's your Wild Horse Resort and Casino weather update for the Columbia Basin. Sunny and hot today with calm wind. Expect a high near 100 in the Roundup City, 102 in Walla Walla, and 103 in Hermiston. Tonight, it will be partly cloudy with light and variable wind. Expect a low around 64. For news, weather, and more, go to ElkhornMediaGroup.com or download the Elkhorn mobile app.