Greet bad weather (4)
I believe the answer is:
hail
I believe this is a double definition.
'greet' is the first definition.
(hailing is a kind of greeting)
'bad weather' is the second definition.
(hail is a type of bad weather)
(Other definitions for hail that I've seen before include "Word of greeting" , "Ice pellets - greeting" , "wintry weather" , "Greet loudly" , "Call out to (someone)" .)