How can two different days in the same hour, week, location, and weather (clear skies) have wildly different temperatures?

Question

Clear skies Monday at 75 degrees vs. a clear skies Wednesday at 95.

In: 3

Answer 1

Air masses move around. One day you’re in an air mass that flowed to you via a jet from the deep tropics, the other day you’re in an air mass that got pushed down out of the subpolar regions. It takes a while for an air mass to change temperature/humidity as it moves, so local conditions aren’t everything.