Temperatures could reach a record-breaking 100 degrees in the metro and up to 103 on the plains, forecasters said.

Several days of record-breaking heat are expected in Denver, and the National Weather Service has issued a heat advisory that will go into effect on Friday. The advisory extends into Saturday, and it's for the Denver metro area as well as parts of Colorado's Front Range to the north and south and for much of eastern Colorado as well.

The National Weather Service issued a heat advisory at 10:08 a.m. EDT on Saturday valid from 3 p.m. EDT until Sunday 8 p.m. EDT for Dickinson and Menominee counties.

A heat advisory is in effect for most of Southeast Michigan until 8 p.m. Tuesday as temperatures continue to climb, according to the National Weather Service.

A heat wave is expected to hit southeast Michigan this weekend and early next week, according to the NWS Detroit office, with some areas reaching 90 degrees. "Warm muggy nights with lows only in the 70s will not provide much relief from the heat,