They will find traces of it, though, like raindrops on windows and small puddles over sidewalks. “It must have rained last night!” they will say while leaving their umbrellas at home ...

Staring at raindrops on a car windshield is more than just a way to get in touch with your emo side. You might also learn some physics. As a car speeds along in the rain, some water droplets slide ...

Raindrops do tend to miss the back window, however. Wind passing over the rear of the car is accelerated on a downward angle, flowing parallel to and just above the rear window.

Only a few scattered drops fell, however (the threatened rain passing off), but these sparse rain-drops drew my attention by their curious appearance on the sill of the window near which I sat.