Possibly hear wet conditions (7)
I believe the answer is:
weather
'conditions' is the definition.
(I've seen this before)
'possibly hear wet' is the wordplay.
'possibly' indicates an anagram.
'hear'+'wet'='hearwet'
'hearwet' anagrammed gives 'WEATHER'.
(Other definitions for weather that I've seen before include "Climatic conditions" , "Endure" , "Local atmospheric conditions" , "Withstand" , "Meteorological state" .)