明日(あした) ashitaで de１()週(しゅう)間(かん) 1shuukan雨(う) uが ga続(つづ)く() tsuzuku事(こと) kotoになる ninaru。 As of tomorrow it will have rained for a week straight. Literal Tomorrow [with-で] 1-week rain [subject-が] continue [nominalizer-事] [dative-に] become. The same ~ことになる pattern, with 雨 ('rain') as the subject and the simple verb 続く ('continue') instead of the compound 降り続く. The literal is 'rain continues' rather than 'continue raining' — slightly looser, more conversational phrasing. weather~ことになる (it turns out that)で (boundary/reaching a point)
明日(あした) ashitaで de１()週(しゅう)間(かん) 1shuukan雨(う) uが ga続(つづ)く() tsuzuku事(こと) kotoになる ninaru。 As of tomorrow it will have rained for a week straight. Literal Tomorrow [with-で] 1-week rain [subject-が] continue [nominalizer-事] [dative-に] become. The same ~ことになる pattern, with 雨 ('rain') as the subject and the simple verb 続く ('continue') instead of the compound 降り続く. The literal is 'rain continues' rather than 'continue raining' — slightly looser, more conversational phrasing. weather~ことになる (it turns out that)で (boundary/reaching a point)