At that point the earth started getting steadily warmer.

Their prison got steadily warmer as the day progressed.

The room about him, Ett thought, had been becoming steadily warmer since his arrival.

Also it grew steadily warmer, and the air filled with moisture, and mist wreaths floated over the ferns.

Six hours had passed since the sun's abrupt appearance, and the temperature had been growing steadily warmer.

The weather grew steadily warmer.

The nights were still cold, even though the days were growing steadily warmer.

It grew steadily warmer and more airless, and Par began to sweat.

The air grew steadily warmer; soon Holt was breathing heavily.

The forest was wet and getting steadily warmer as the sun climbed higher above us.