Clouds will increase as a storm system moves over the Northwest on Sunday.  Showers are likely in the mountains of Idaho especially Sunday afternoon.  There is a thirty percent chance of showers in the Treasure Valley Sunday afternoon.  The chance of showers continues on Memorial Day with a  mix of sun and clouds.  On Tuesday, a big Pacific storm system will move in, changing our weather pretty dramatically.  Temperatures will be cooler, and showers are likely statewide on Tuesday.  Cooler temperatures and the chance of showers will continue through Thursday, before a warming trend, just in time for the weekend.