Wheat gathered with hesitation in rain, say (7)
I believe the answer is:
weather
'rain say' is the definition.
(rain is a kind of weather)
'wheat gathered with hesitation' is the wordplay.
'gathered' indicates an anagram (the letters are gathered into a new order).
'with' says to put letters next to each other.
'hesitation' becomes 'er' (sound made while hesitating - um, er).
'wheat' is an anagram of 'weath'.
'weath'+'er'='WEATHER'
'in' acts as a link.
(Other definitions for weather that I've seen before include "ride out" , "Climatic conditions" , "Meteorological conditions" , "Conditions outside; survive (crisis)" , "State of the atmosphere" .)