 Nyora kupfuurira kweiyi ndima - Feinstein akaberekwa Dianne Emiel Goldman muSan Francisco kuna Leon Goldman, chiremba, uye mudzimai wake Betty née Rosenburg, aimbova womuenzaniso. Vanasekuru vake vokuberekwa nababa vaiva vaJudha vakanga vatama vachibva kuPoland. Vanasekuru navanambuya vaamai vake, vaRosenburg, vaibva kuSaint Petersburg, Russia. Kunyange zvazvo vakanga vari vorudzi rwechiJudha rweGermany, vaishandisa kutenda kweOrthodox yeRussia chiKristu, sezvakanga zvichidikanwanokuda kwavaJudha muSt. Petersburg. ChiKristu chakapfuudzwa kuna amai vaFeinstein, avo vakasimbirira pakuchinjwa kwake kubva pachikoro chezuva chechiJudha kuenda kuchikoro chakakurumbira cheKaturike chemuno, asi Feinstein anonyora chitendero chake sechiJudha. Akapedza kudzidza paConvent of the Sacred Heart High School muna 1951 uye kubva kuStanford University muna 1955 aine Bachelor of Arts munhoroondo. 