Near-idyllic spring days usher in the Wasatch Frontâs new work week, but southern Utahns are already in full dress rehearsal for summer weather. After Mondayâs highs in the mid-70s, Tuesday brings sunny morning skies to the Salt Lake and Tooele Valleys, turning partly cloudy in the afternoon. Wednesday, again sunny in the morning and cloudy in the afternoon, will see the mercury climb into the mid-80s â though thunderstorms are expected by nightfall. Perfect weather for reflection.