According to the warning, "Temperatures are warming quickly across Cuyahoga County due to the heat-island effect". "But as the center of the high-pressure system moves offshore over the weekend, it will morph into a "Bermuda High" and will pump in higher temperatures and transport moisture from the Gulf of Mexico, making it very humid".
While Sunday was warm, as temperatures pushed through the upper-80s, reaching the low-90s in some locations - the humidity will built on Monday - creating tough conditions for those with breathing problems.
And it's not just North Carolina facing a scorcher all this week.
The weather service says dry and pleasant weather will prevail today, with mostly sunny skies expected.
Sunday's predicted high temperature of 97 would set a record; the highest recorded temperature for June 17 is 96 degrees, back in 1957, and we're likely to break another record once the sun sets. Heatstroke can be fatal, according to the weather service.
"The number of heat related illnesses are hard to record, but it is fair to say that each year in MI there are hundreds of heat related illnesses some of which require hospitalizations", reads a statement by the NWS.
Late this afternoon and into early evening, however, the weather service said a robust trough "will drive a fairly strong cold front southwards into our region".
A Heat Advisory has been issued for eastern Hampden County from 1 p.m. until 7 p.m. Monday.
The weather service office in Wilmington also issued a moderate rip current risk on Sunday. Do what you can to stay cool and take it easy. Lightweight, light-colored clothing reflects heat and sunlight, and helps your body maintain normal temperatures.
To allay the effects of the heat, drink plenty of water and fluids, the weather service added in its heat advisory.
Spend as much time as possible in air conditioning.