I do love the way the new rain sparkles in the light GOOD WORK BIS :-)
But at the moment there is only one type of rain.
In high temperatures the droplets tend to be bigger due to them having more time to accumulate in the air because the pressure holds them up longer before becoming heavy enough to fall.
Low temperature the droplets are smaller (finer) due to less air pressure allows them to fall more easily.
So the rain could range from a cold weather fine mist, all the way to a high pressure storm with massive droplets and everything in between.
The rain in ARMA 3 also has no distance or depth (local to the player like a portable shower curtain) so it doesn't affect long range visibility at all. It should be local to the clouds that it falls from.