Wild weather thus overwhelming cricket side after half-day (7)
I believe the answer is:
monsoon
'wild weather' is the definition.
(I've seen this before)
'overwhelming cricket side after half-day' is the wordplay.
'overwhelming' indicates putting letters inside.
'cricket side' becomes 'on'.
'after half' becomes 'so' (I can't explain this - if you can you should believe this answer much more).
'day' becomes 'mon'.
'on'+'so'='onso'
'onso' placed into 'mon' is 'MONSOON'.
'thus' acts as a link.
I am not very happy about this link. It may belong to another bit of the clue.
Can you help me to learn more?
(Other definitions for monsoon that I've seen before include "'Seasonal wind in southern Asia, brings heavy rains (7)'" , "Rainy season of India and SE Asia" , "Rain-bringing wind" , "Seasonal wind and rain in S Asia" , "A lot of rain, perhaps" .)