Used for precipitation, often in weather contexts. Can refer to rain or snow depending on the season.
The rainfall is heavy today, isn't it?
The rain has been getting heavier since evening.
冬の降りは静かで美しい。
The snowfall in winter is quiet and beautiful.
The bus alighting is at the next stop.
Descending the mountain is easier than climbing it.
Please be careful when getting on and off the bus.
The rain should let up after midday.
下車 is a formal word specifically for getting off a train or vehicle, while 降り is a more general, everyday term for alighting or descending.
The noun form of the verb 降る (ふる, 'to fall from the sky'), using the continuative stem 降り. The alighting sense is derived from the verb 降りる (おりる, 'to get off'), sharing the same kanji.
rainy spell
heavy rain; downpour
light rain; drizzle
driving rain; slanting rain
snowfall; snowy weather
driving rain; rainstorm; wind and rain
lie scattered; be strewn with; be covered with
rain harder; snow harder
stop raining or snowing
fall and pile up; lie thick