What are the most common types of precipitation?
The most common types of precipitation is dependent on your climate.
The following are the different types of precipitation.
Rain Snow Freezing Rain (rain that freezes on contact) Ice Pellets (frozen rain)
Drizzle Freezing Drizzle Snow Grains (frozen drizzle)
Snow Pellets (basically really small hail) Hail
Sleet is not a precipitation type, it is just snow that is falling in warmer temperatures (close to the freezing point) so that it is "wet".
I think that is all of them.
Wait, I forgot Ice Crystals. These form at cold temperatures independent of cloud.