Falls as flakes today, in spades (5)
I believe the answer is:
snows
'falls' is the definition.
(snowing is a kind of falling)
'flakes today in spades' is the wordplay.
'flakes' becomes 'snow' (I have seen 'White flakes' mean 'snow' so perhaps 'flakes' could also mean 'snow').
'today in spades' becomes 's' (I can't explain this - if you can you should believe this answer much more).
'snow'+'s'='SNOWS'
'as' acts as a link.
Can you help me to learn more?
(Other definitions for snows that I've seen before include "Precipitates" , "Showers frozen flakes" , "Comes down in flakes" .)