Atimelysnowpromisesagoodharvest.Thisidiomconveystheideathatabeneficialsnowfall,occurringattherighttime,isasignofaproductiveagriculturalseasonahead.Here'sananalysisofthekeycomponents:1."Timely"indicatesthatthesnowfallisoccurringatanappropriateoropportunemoment,suggestingitwillbenefitthecropsratherthanhinderthem.2."Snow"referstotheprecipitation,whichinthiscontext,isnotharmfulbutrathercontributespositivelytothefarmingprocess.3."Promises"suggeststhatthereisanexpectationorlikelihoodofapositiveoutcome,specificallyagoodharvest.Inessence,thephrasereassuresthatthecurrentweatherconditions,withtheappropriatesnowfall,arepredictiveofasuccessfulcropyield.Itisatraditionalbeliefthatadeepsnowpackduringthewintercanprovidemoistureforthesoilduringthegrowingseason,leadingtobettercropdevelopmentandultimately,ahigherharvest.