It was growing steadily colder, and a fine rain had begun to fall.
The day remained mild, yet he grew steadily colder.
Although such strenuous activity should have left them overheated, they grew steadily colder.
It got steadily colder and stung him with icy needles of pain.
The air was growing steadily colder, even as the sun rose.
The air had turned steadily colder, and snow clouds ringed the peaks of the mountains.
He grew steadily colder, and towards noon it began to rain.
We climbed for what seemed a long time and it grew steadily colder.
Meanwhile, the wing's surface can be getting steadily colder as the plane sits in the chilly air.
But the wind got steadily colder, and it was time to get back to the house.