When I was growing up back in the dark ages of the 70's I heard of the legend that Inuit people had 37 different words for snow. Well to be fair, I heard the legend a few times over the years and the number changed but the first version was 37 so that is what I default to. I was a bit disappointed when I found out it was only a legend - I had carried it in awe for over 30 years.
What I have realized is that I am getting close to that for words or phrases to describe 'rain' - subconscious inspiration from the legend maybe lol.
I have been trying to collate a list and I keep thinking of new descriptors I use so please don't take this as complete but there is: a sprinkle, a shower, a misting, a drip, rain, light rain, horizontal rain, torrential, pouring down, drizzle, sun shower, deluge, storm, downpour, bucketing down, spitting. I will add the rest as a think about them :-)
Photo" "Flower on the Ground" by me :-)