Your morning Utah weather update Active alerts: Red Flag Warning, Red Flag Warning, Red Flag Warning. around 92 degrees We're six hours away from scattered thunderstorms lighting up the afternoon sky, a weak disturbance is hanging around. And when the sun heats things up, that's your trigger, storms fire up around 3 P.M., especially east of I-15. Temperature-wise, Salt Lake City wakes up warm at 92 degrees.