National Weather Service United States Department of Commerce

Dangerous heat will persist Sunday and Monday, with afternoon through early evening heat indices exceeding 105 degrees for most areas.
Heat indices exceeding 100 to 105 degrees will persist on Tuesday.
Dangerous heat will continue through at least Tuesday, with an ever-so-slight cool down by Wednesday. Small chances for showers and thunderstorms arrive Monday night through week's end, mainly during the nighttime and morning hours.