Heat is building once again into the Southwest. Temperatures over 100 degrees can be expected in the Desert Southwest through most of this week, according to the National Weather Service.
Temperatures over 100 degrees F will also expand to the Intermountain West on Tuesday. Salt Lake City could see a high of 100 and Las Vegas could hit 106 degrees. Severe thunderstorms and heavy rain are possible across portions of the Northeast and the Central/Northern Plains.