A lot of cace in area which latitude high or medium kind of Japan, above cloud temperature is below zero and the cloud grain is very small drip by refrigeration or very small ice's grain.
Drip by refrigeration and ice's grain is compatible, drip by refration is quikly evapolation and ice's grain quikly big. Big ice's drip drop.
If it is above zero it become drip when it deopping. It is snow temparatur below zero so it is drop not to melt continue.

Thunder does not drop ground because thunder's drip of diameter is very small 0.01mm so drop speed is very slow. Or it go out by evaporation when it arraival ground.
But disemeter is big than 2mm which drop speed has quikly and it is not evaporation when it arraival ground that is rain.