A strong ridge of high pressure will keep it hot and dry with record heat likely. If you're spending time outside during the heat of the day, make sure you're taking frequent breaks and drinking plenty of water. Temperatures will drop a little by the second half of the week, but remain well above average.
SALT LAKE CITY
Monday: Sunny & hot! Highs: Near 104.
Monday Night: Mostly clear. Lows: Lower 70s.
ST. GEORGE
Monday: Becoming mostly sunny & getting very hot! Highs: Near 112.
Monday Night: Mostly clear. Lows: Mid 70s.