Sentence:  Thus in a context in which there has been discussion of snow but mention of local conditions is new , dominant stress will probably be on here in it rarely snows here , but in a context in which there has been discussion of local <WSD>weather</WSD> but no mention of snow , dominant stress will probably be on snows . 
Meaning of the word marked with <WSD> tags:  the atmospheric conditions that comprise the state of the atmosphere in terms of temperature and wind and clouds and precipitation