The chief factors are the relentless heat, with temperatures from the mid-90's to more than 100, and meager rain.

The main obstacles faced include the relentless heat and soft sand dunes.

And it has not just been the relentless heat, the likes of which no one around these normally breezy shores can remember.

But the relentless heat and humidity are murder on hair, especially when you're trying to discipline it.

He stood beside the car, cowering, his arms still crossed, shivering despite the relentless heat.

The relentless heat makes bars some of the most profitable businesses in Ojinaga.

For with the relentless heat comes a vicious killer.

Pristine clouds boiled across nearly half of the visible surface, generated by the relentless heat.

Chesarynth rested at first from the relentless heat and gravity of Earth.

My parents retreated to the front porch, where they sat on the steps, waiting for a breeze and a break from the relentless heat.