Since Mother Nature isn’t a team player and won’t start and stop precipitation on command, when a scene calls for rain we usually just make it by using rainbars.
Rainbars come in all sizes, from teeny drip lines that just make a trickle of water on a window to giant ones like this that have to be lifted with a crane and fed with something that looks like a fire hose.
These big crane ones create really, really nice looking rain, but they pump out so much water that they create a micro-climate that’s noticeably colder than the surrounding area. Which would be great on a hot summer night, but in January it’s just, well, cold. And damp.
My new rain jacket works great, though!