 Resort and casino weather update for the Columbia Basin today. An excessive heat warning is in effect until 10 p.m. Monday with dangerously hot conditions and temperatures ranging between 100 and 110 throughout the weekend. Also expect more widespread haze. Tonight, mostly clear with overnight temperatures in the low to mid 60s. Stay up to date with the latest breaking news, wildfire updates, and more when you download the Elkhorn mobile app at ElkhornMediaGroup.com.