Temperatures dropped 30 to 40 degrees in a matter of a few hours.
The temperature must have dropped twenty degrees in ten minutes.
Suddenly it seemed as if the temperature in the room had dropped twenty degrees.
Temperatures dropped 10 to 15 degrees after the front passed through, and skies began to clear.
The temperature of the room seemed to drop ten degrees.
The outside water temperature had dropped ten degrees: a cold current.
In only a few minutes the temperature had dropped twenty degrees.
Over the next two hours, the temperature dropped 62 degrees to 13 below zero.
The temperature in the room dropped at least twenty degrees.
Even then, the average temperature dropped only about forty degrees.
